- Preface
- Chapter 1, Shelf Assembly Hardware
- Chapter 2, Common Control Cards
- Chapter 3, Optical Service Channel Cards
- Chapter 4, Optical Amplifier Cards
- Chapter 5, Multiplexer and Demultiplexer Cards
- Chapter 6, Optical Add/Drop Cards
- Chapter 7, Reconfigurable Optical Add/Drop Cards
- Chapter 8, Transponder and Muxponder Cards
- Chapter 9, Node Reference
- Chapter 10, Network Reference
- Chapter 11, Optical Channel Circuits and Virtual Patchcords Reference
- Chapter 12, Cisco Transport Controller Operation
- Chapter 13, Security Reference
- Chapter 14, Timing Reference
- Chapter 15, Manage Network Connectivity
- Chapter 16, Alarm and TCA Monitoring and Management
- Chapter 17, Performance Monitoring
- Chapter 18, SNMP
- Appendix A, Hardware Specifications
- Appendix B, Administrative and Service States
- Appendix C, Network Element Defaults
- 8.1 Card Overview
- 8.2 Safety Labels
- 8.3 TXP_MR_10G Card
- 8.4 TXP_MR_10E Card
- 8.4.1 Key Features
- 8.4.2 Faceplate and Block Diagram
- 8.4.3 Client Interface
- 8.4.4 DWDM Trunk Interface
- 8.4.5 Enhanced FEC (E-FEC) Feature
- 8.4.6 FEC and E-FEC Modes
- 8.4.7 Client-to-Trunk Mapping
- 8.4.8 Automatic Laser Shutdown
- 8.4.9 TXP_MR_10E Card-Level Indicators
- 8.4.10 TXP_MR_10E Port-Level Indicators
- 8.5 TXP_MR_10E_C and TXP_MR_10E_L Cards
- 8.5.1 Key Features
- 8.5.2 Faceplates and Block Diagram
- 8.5.3 Client Interface
- 8.5.4 DWDM Trunk Interface
- 8.5.5 Enhanced FEC (E-FEC) Feature
- 8.5.6 FEC and E-FEC Modes
- 8.5.7 Client-to-Trunk Mapping
- 8.5.8 Automatic Laser Shutdown
- 8.5.9 TXP_MR_10E_C and TXP_MR_10E_L Card-Level Indicators
- 8.5.10 TXP_MR_10E_C and TXP_MR_10E_L Port-Level Indicators
- 8.6 TXP_MR_2.5G and TXPP_MR_2.5G Cards
- 8.7 MXP_2.5G_10G Card
- 8.7.1 Timing Synchronization
- 8.7.2 Automatic Laser Shutdown
- 8.7.3 MXP_2.5G_10G Card-Level Indicators
- 8.7.4 MXP_2.5G_10E Card
- 8.7.5 Faceplate
- 8.7.6 Client Interfaces
- 8.7.7 Multiplexing Function
- 8.7.8 Timing Synchronization
- 8.7.9 Enhanced FEC (E-FEC) Capability
- 8.7.10 FEC and E-FEC Modes
- 8.7.11 SONET/SDH Overhead Byte Processing
- 8.7.12 Client Interface Monitoring
- 8.7.13 Wavelength Identification
- 8.7.14 Automatic Laser Shutdown
- 8.7.15 Jitter
- 8.7.16 Lamp Test
- 8.7.17 Onboard Traffic Generation
- 8.7.18 MXP_2.5G_10E Card-Level Indicators
- 8.7.19 MXP_2.5G_10E Port-Level Indicators
- 8.8 MXP_2.5G_10E_C and MXP_2.5G_10E_L Cards
- 8.8.1 Key Features
- 8.8.2 Faceplate
- 8.8.3 Client Interfaces
- 8.8.4 DWDM Interface
- 8.8.5 Multiplexing Function
- 8.8.6 Timing Synchronization
- 8.8.7 Enhanced FEC (E-FEC) Capability
- 8.8.8 FEC and E-FEC Modes
- 8.8.9 SONET/SDH Overhead Byte Processing
- 8.8.10 Client Interface Monitoring
- 8.8.11 Wavelength Identification
- 8.8.12 Automatic Laser Shutdown
- 8.8.13 Jitter
- 8.8.14 Lamp Test
- 8.8.15 Onboard Traffic Generation
- 8.8.16 MXP_2.5G_10E_C and MXP_2.5G_10E_L Card-Level Indicators
- 8.8.17 MXP_2.5G_10E and MXP_2.5G_10E_L Port-Level Indicators
- 8.9 MXP_MR_2.5G and MXPP_MR_2.5G Cards
- 8.9.1 Performance Monitoring
- 8.9.2 Distance Extension
- 8.9.3 Slot Compatibility
- 8.9.4 Interoperability with Cisco MDS Switches
- 8.9.5 Client and Trunk Ports
- 8.9.6 Faceplates
- 8.9.7 Block Diagram
- 8.9.8 Automatic Laser Shutdown
- 8.9.9 MXP_MR_2.5G and MXPP_MR_2.5G Card-Level Indicators
- 8.9.10 MXP_MR_2.5G and MXPP_MR_2.5G Port-Level Indicators
- 8.10 MXP_MR_10DME_C and MXP_MR_10DME_L Cards
- 8.11 GE_XP and 10GE_XP Cards
- 8.11.1 Key Features
- 8.11.2 Faceplate and Block Diagram
- 8.11.3 Client Interface
- 8.11.4 DWDM Trunk Interface
- 8.11.5 Configuration Management
- 8.11.6 Security
- 8.11.7 Y-Cable Protection
- 8.11.8 Layer 2 Over DWDM Protection
- 8.11.9 GE_XP and 10GE_XP Card-Level Indicators
- 8.11.10 GE_XP and 10GE_XP Port-Level Indicators
- 8.12 ADM-10G Card
- 8.12.1 Key Features
- 8.12.2 GFP Interoperability
- 8.12.3 Faceplate
- 8.12.4 Port Configuration Rules
- 8.12.5 Client Interfaces
- 8.12.6 Interlink Interfaces
- 8.12.7 DWDM Trunk Interface
- 8.12.8 Configuration Management
- 8.12.9 Security
- 8.12.10 Protection
- 8.12.11 ADM-10G Card-Level Indicators
- 8.12.12 ADM-10G Card Port-Level Indicators
- 8.13 Y-Cable and Splitter Protection
- 8.14 Far-End Laser Control
- 8.15 Jitter Considerations
- 8.16 Termination Modes
- 8.17 SFP and XFP Modules
Transponder and Muxponder Cards
Note 
The terms "Unidirectional Path Switched Ring" and "UPSR" may appear in Cisco literature. These terms do not refer to using Cisco ONS 15xxx products in a unidirectional path switched ring configuration. Rather, these terms, as well as "Path Protected Mesh Network" and "PPMN," refer generally to Cisco's path protection feature, which may be used in any topological network configuration. Cisco does not recommend using its path protection feature in any particular topological network configuration.
This chapter describes Cisco ONS 15454 transponder (TXP), muxponder (MXP), GE_XP, 10GE_XP, ADM-10G cards, as well as their associated plug-in modules (Small Form-factor Pluggables [SFPs or XFPs]). For installation and card turn-up procedures, refer to the Cisco ONS 15454 DWDM Procedure Guide. For card safety and compliance information, refer to the Cisco Optical Transport Products Safety and Compliance Information document.
Note Unless otherwise specified, "ONS 15454" refers to both ANSI and ETSI shelf assemblies.
Chapter topics include:
•TXP_MR_10E_C and TXP_MR_10E_L Cards
•TXP_MR_2.5G and TXPP_MR_2.5G Cards
•MXP_2.5G_10E_C and MXP_2.5G_10E_L Cards
•MXP_MR_2.5G and MXPP_MR_2.5G Cards
•MXP_MR_10DME_C and MXP_MR_10DME_L Cards
•Y-Cable and Splitter Protection
8.1 Card Overview
The card overview section lists the cards described in this chapter and provides compatibility information.
Note Each card is marked with a symbol that corresponds to a slot (or slots) on the ONS 15454 shelf assembly. The cards are then installed into slots displaying the same symbols. See the "Card Slot Requirements" section for a list of slots and symbols.
The purpose of a TXP, MXP, GE_XP, 10GE_XP, or ADM-10G card is to convert the "gray" optical client interface signals into trunk signals that operate in the "colored" dense wavelength division multiplexing (DWDM) wavelength range. Client-facing gray optical signals generally operate at shorter wavelengths, whereas DWDM colored optical signals are in the longer wavelength range (for example, 1490 nm = violet; 1510 nm = blue; 1530 nm = green; 1550 nm = yellow; 1570 nm = orange; 1590 nm = red; 1610 nm = brown). Some of the newer client-facing SFPs, however, operate in the colored region. Transponding or muxponding is the process of converting the signals between the client and trunk wavelengths.
An MXP generally handles several client signals. It aggregates, or multiplexes, lower rate client signals together and sends them out over a higher rate trunk port. Likewise, it demultiplexes optical signals coming in on a trunk and sends them out to individual client ports. A TXP converts a single client signal to a single trunk signal and converts a single incoming trunk signal to a single client signal. GE_XP and 10GE_XP cards can be provisioned as TXPs, as MXPs, or as Layer 2 switches.
All of the TXP and MXP cards perform optical to electrical to optical (OEO) conversion. As a result, they are not optically transparent cards. The reason for this is that the cards must operate on the signals passing through them, so it is necessary to do an OEO conversion.
On the other hand, the termination mode for all of the TXPs and MXPs, which is done at the electrical level, can be configured to be transparent. In this case, neither the Line nor the Section overhead is terminated. The cards can also be configured so that either Line or Section overhead can be terminated, or both can be terminated.
Note The MXP_2.5G_10G card, by design, when configured in the transparent termination mode, actually does terminate some of the bytes. See Table 8-39 for details.
8.1.1 Card Summary
Table 8-1 lists and summarizes the functions of each TXP, TXPP, MXP, and MXPP card.
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The TXP_MR_10G card has two sets of ports located on the faceplate. |
See the "TXP_MR_10G Card" section |
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The TXP_MR_10E card has two sets of ports located on the faceplate. |
See the "TXP_MR_10E Card" section |
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The TXP_MR_10E_C and TXP_MR_10E_L cards have two sets of ports located on the faceplate. |
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The TXP_MR_2.5G card has two sets of ports located on the faceplate. |
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The TXPP_MR_2.5G card has three sets of ports located on the faceplate. |
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The MXP_2.5G_10G card has nine sets of ports located on the faceplate. |
See the "MXP_2.5G_10G Card" section. |
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The MXP_2.5G_10E card has nine sets of ports located on the faceplate. |
See the "MXP_2.5G_10E Card" section |
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MXP_2.5G_10E_L |
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards have nine sets of ports located on the faceplate. |
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The MXP_MR_2.5G card has nine sets of ports located on the faceplate. |
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The MXPP_MR_2.5G card has ten sets of ports located on the faceplate. |
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The MXP_MR_10DME_C and MXP_MR_10DME_L cards have eight sets of ports located on the faceplate. |
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The GE_XP has 20 GE client ports and two 10GE trunk ports. |
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The 10GE_XP has two 10 Gigabit Ethernet (GE) client ports and two 10GE trunk ports. |
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The ADM-10G has 18 sets of ports located on the faceplate. |
See the "ADM-10G Card" section |
8.1.2 Card Compatibility
Table 8-2 lists the Cisco Transport Controller (CTC) software compatibility for each TXP, TXPP, MXP, MXPP, 10GE_XP, GE_XP and ADM-10G card.
8.2 Safety Labels
This section explains the significance of the safety labels attached to some of the cards. The faceplates of the cards are clearly labeled with warnings about the laser radiation levels. You must understand all warning labels before working on these cards.
8.2.1 Class 1 Laser Product Cards
The MXP_2.5G_10G, MXP_2.5G_10E, MXP_2.5G_10E_C, MXP_2.5G_10E_L, ADM-10G, GE_XP, and 10GE_XP cards have Class 1 lasers. The labels that appear on these cards are described in the following sections.
8.2.1.1 Class 1 Laser Product Label
The Class 1 Laser Product label is shown in Figure 8-1.
Figure 8-1 Class 1 Laser Product Label
Class 1 lasers are products whose irradiance does not exceed the Maximum Permissible Exposure (MPE) value. Therefore, for Class 1 laser products the output power is below the level at which it is believed eye damage will occur. Exposure to the beam of a Class 1 laser will not result in eye injury and can therefore be considered safe. However, some Class 1 laser products might contain laser systems of a higher Class but there are adequate engineering control measures to ensure that access to the beam is not reasonably likely. Anyone who dismantles a Class 1 laser product that contains a higher Class laser system is potentially at risk of exposure to a hazardous laser beam
8.2.1.2 Hazard Level 1 Label
The Hazard Level 1 label is shown in Figure 8-2.
Figure 8-2 Hazard Level Label
The Hazard Level label warns users against exposure to laser radiation of Class 1 limits calculated in accordance with IEC60825-1 Ed.1.2.
8.2.1.3 Laser Source Connector Label
The Laser Source Connector label is shown in Figure 8-3.
Figure 8-3 Laser Source Connector Label
This label indicates that a laser source is present at the optical connector where the label has been placed.
8.2.1.4 FDA Statement Label
The FDA Statement label is shown in Figure 8-4.
Figure 8-4 FDA Statement Label
This label shows compliance to FDA standards and that the hazard level classification is in accordance with IEC60825-1 Am.2 or Ed.1.2.
8.2.1.5 Shock Hazard Label
The Shock Hazard label is shown in Figure 8-5.
Figure 8-5 Shock Hazard Label
This label alerts personnel to electrical hazard within the card. The potential of shock hazard exists when removing adjacent cards during maintenance, and touching exposed electrical circuitry on the card itself.
8.2.2 Class 1M Laser Product Cards
The TXP_MR_10G, TXP_MR_10E, TXP_MR_10E_C, TXP_MR_10E_L, TXP_MR_2.5G, TXPP_MR_2.5G, MXP_MR_2.5G, MXPP_MR_2.5G, MXP_MR_10DME_C, and MXP_MR_10DME_L cards have Class 1M lasers.
The labels that appear on these cards are described in the following subsections.
8.2.2.1 Class 1M Laser Product Label
The Class 1M Laser Product label is shown in Figure 8-6.
Figure 8-6 Class 1M Laser Product Label
Class 1M lasers are products that produce either a highly divergent beam or a large diameter beam. Therefore, only a small part of the whole laser beam can enter the eye. However, these laser products can be harmful to the eye if the beam is viewed using magnifying optical instruments.
8.2.2.2 Hazard Level 1M Label
The Hazard Level 1M label is shown in Figure 8-7.
Figure 8-7 Hazard Level Label
The Hazard Level label warns users against exposure to laser radiation of Class 1 limits calculated in accordance with IEC60825-1 Ed.1.2.
8.2.2.3 Laser Source Connector Label
The Laser Source Connector label is shown in Figure 8-8.
Figure 8-8 Laser Source Connector Label
This label indicates that a laser source is present at the optical connector where the label has been placed.
8.2.2.4 FDA Statement Label
The FDA Statement label is shown in Figure 8-9.
Figure 8-9 FDA Statement Label
This label shows compliance to FDA standards and that the hazard level classification is in accordance with IEC60825-1 Am.2 or Ed.1.2.
8.2.2.5 Shock Hazard Label
The Shock Hazard label is shown in Figure 8-10.
Figure 8-10 Shock Hazard Label
This label alerts personnel to electrical hazard within the card. The potential of shock hazard exists when removing adjacent cards during maintenance, and touching exposed electrical circuitry on the card itself.
8.3 TXP_MR_10G Card
The TXP_MR_10G processes one 10-Gbps signal (client side) into one 10-Gbps, 100-GHz DWDM signal (trunk side). It provides one 10-Gbps port per card that can be provisioned for an STM-64/OC-192 short reach (1310-nm) signal, compliant with ITU-T G.707, ITU-T G.709, ITU-T G.691, and Telcordia GR-253-CORE, or a 10GBASE-LR signal compliant with IEEE 802.3.
The TXP_MR_10G card is tunable over two neighboring wavelengths in the 1550-nm, ITU 100-GHz range. It is available in 16 different versions, each of which covers two wavelengths, for a total coverage of 32 different wavelengths in the 1550-nm range.
Note ITU-T G.709 specifies a form of forward error correction (FEC) that uses a "wrapper" approach. The digital wrapper lets you transparently take in a signal on the client side, wrap a frame around it and restore it to its original form. FEC enables longer fiber links because errors caused by the optical signal degrading with distance are corrected.
The trunk port operates at 9.95328 Gbps (or 10.70923 Gbps with ITU-T G.709 Digital Wrapper/FEC) and at 10.3125 Gbps (or 11.095 Gbps with ITU-T G.709 Digital Wrapper/FEC) over unamplified distances up to 80 km (50 miles) with different types of fiber such as C-SMF or dispersion compensated fiber limited by loss and/or dispersion.
Because the transponder has no capability to look into the payload and detect circuits, a TXP_MR_10G card does not display circuits under card view.
You must use a 15-dB fiber attenuator (10 to 20 dB) when working with the TXP_MR_10G card in a loopback on the trunk port. Do not use direct fiber loopbacks with the TXP_MR_10G card. Using direct fiber loopbacks causes irreparable damage to the TXP_MR_10G card.
You can install TXP_MR_10G cards in Slots 1 to 6 and 12 to 17 and provision this card in a linear configuration. TXP_MR_10G cards cannot be provisioned as a bidirectional line switched ring (BLSR)/Multiplex Section - Shared Protection Ring (MS-SPRing), a path protection/single node control point (SNCP), or a regenerator. They can only be used in the middle of BLSR/MS-SPRing and 1+1 spans when the card is configured for transparent termination mode.
The TXP_MR_10G port features a 1550-nm laser for the trunk port and a 1310-nm laser for the for the client port and contains two transmit and receive connector pairs (labeled) on the card faceplate.
The MTU setting is used to display the OverSizePkts counters on the receiving trunk and client port interfaces. Traffic of frame sizes up to 65535 bytes pass without any packet drops, from the client port to the trunk port and vice versa irrespective of the MTU setting.
Figure 8-11 shows the TXP_MR_10G faceplate and block diagram.
Figure 8-11 TXP_MR_10G Faceplate and Block Diagram
For information on safety labels for the card, see the "Class 1M Laser Product Cards" section.
8.3.1 Automatic Laser Shutdown
The ALS procedure is supported on both client and trunk interfaces. On the client interface, ALS is compliant with ITU-T G.664 (6/99). On the data application and trunk interface, the switch on and off pulse duration is greater than 60 seconds and is user-configurable. For details on ALS provisioning for the card, refer to the Cisco ONS 15454 DWDM Procedure Guide.
8.3.2 TXP_MR_10G Card-Level Indicators
Table 8-3 lists the three card-level LEDs on the TXP_MR_10G card.
8.3.3 TXP_MR_10G Port-Level Indicators
Table 8-4 lists the four port-level LEDs in the TXP_MR_10G card.
8.4 TXP_MR_10E Card
The TXP_MR_10E card is a multirate transponder for the ONS 15454 platform. The card is fully backward compatible with the TXP_MR_10G card. It processes one 10-Gbps signal (client side) into one 10-Gbps, 100-GHz DWDM signal (trunk side) that is tunable over four wavelength channels (spaced at 100 GHz on the ITU grid) in the C band and tunable over eight wavelength channels (spaced at 50 GHz on the ITU grid) in the L band. There are eight versions of the C-band card, with each version covering four wavelengths, for a total coverage of 32 wavelengths. There are five versions of the L-band card, with each version covering eight wavelengths, for a total coverage of 40 wavelengths.
You can install TXP_MR_10E cards in Slots 1 to 6 and 12 to 17 and provision the cards in a linear configuration, BLSR/MS-SPRing, path protection/SNCP, or a regenerator. The card can be used in the middle of BLSR/MS-SPRing or 1+1 spans when the card is configured for transparent termination mode.
The TXP_MR_10E card features a 1550-nm tunable laser (C band) or a 1580-nm tunable laser (L band) for the trunk port and a separately orderable ONS-XC-10G-S1 1310-nm or ONS-XC-10G-L2 1550-nm laser XFP module for the client port.
Note When the ONS-XC-10G-L2 XFP is installed, the TXP_MR_10E card must be installed in Slots 5, 6, 12 or 13.
On its faceplate, the TXP_MR_10E card contains two transmit and receive connector pairs, one for the trunk port and one for the client port. Each connector pair is labeled.
8.4.1 Key Features
The key features of the TXP_MR_10E card are:
•A tri-rate client interface (available through the ONS-XC-10G-S1 XFP, ordered separately)
–OC-192 (SR1)
–10GE (10GBASE-LR)
–10G-FC (1200-SM-LL-L)
•OC-192 to ITU-T G.709 OTU2 provisionable synchronous and asynchronous mapping
•The MTU setting is used to display the OverSizePkts counters on the receiving trunk and client port interfaces. Traffic of frame sizes up to 65535 bytes pass without any packet drops, from the client port to the trunk port and vice versa irrespective of the MTU setting.
8.4.2 Faceplate and Block Diagram
Figure 8-12 shows the TXP_MR_10E faceplate and block diagram.
Figure 8-12 TXP_MR_10E Faceplate and Block Diagram
For information on safety labels for the card, see the "Class 1M Laser Product Cards" section.
You must use a 15-dB fiber attenuator (10 to 20 dB) when working with the TXP_MR_10E card in a loopback on the trunk port. Do not use direct fiber loopbacks with the TXP_MR_10E card. Using direct fiber loopbacks causes irreparable damage to the TXP_MR_10E card.
8.4.3 Client Interface
The client interface is implemented with a separately orderable XFP module. The module is a tri-rate transceiver, providing a single port that can be configured in the field to support an OC-192 SR-1 (Telcordia GR-253-CORE) or STM-64 I-64.1 (ITU-T G.691) optical interface, as well as 10GE LAN PHY (10GBASE-LR), 10GE WAN PHY (10GBASE-LW), or 10G FC signals.
The client side XFP pluggable module supports LC connectors and is equipped with a 1310-nm laser.
8.4.4 DWDM Trunk Interface
On the trunk side, the TXP_MR_10E card provides a 10-Gbps STM-64/OC-192 interface. There are four tunable channels available in the 1550-nm band or eight tunable channels available in the 1580-nm band on the 50-GHz ITU grid for the DWDM interface. The TXP_MR_10E card provides 3R (retime, reshape, and regenerate) transponder functionality for this 10-Gbps trunk interface. Therefore, the card is suited for use in long-range amplified systems. The DWDM interface is complaint with ITU-T G.707, ITU-T G.709, and Telcordia GR-253-CORE standards.
The DWDM trunk port operates at a rate that is dependent on the input signal and the presence or absence of the ITU-T G.709 Digital Wrapper/FEC. The possible trunk rates are:
•OC192 (9.95328 Gbps)
•OTU2 (10.70923 Gbps)
•10GE (10.3125 Gbps) or 10GE into OTU2 (ITU G.sup43 11.0957 Gbps)
•10G FC (10.51875 Gbps) or 10G FC into OTU2 (nonstandard 11.31764 Gbps)
The maximum system reach in filterless applications without the use of optical amplification or regenerators is nominally rated at 23 dB over C-SMF fiber. This rating is not a product specification, but is given for informational purposes. It is subject to change.
8.4.5 Enhanced FEC (E-FEC) Feature
A key feature of the TXP_MR_10E is the availability to configure the forward error correction in three modes: NO FEC, FEC, and E-FEC. The output bit rate is always 10.7092 Gbps as defined in ITU-T G.709, but the error coding performance can be provisioned as follows:
•NO FEC—No forward error correction
•FEC—Standard ITU-T G.975 Reed-Solomon algorithm
•E-FEC—Standard ITU-T G.975.1 I.7 algorithm, which is a super FEC code
Note The E-FEC of the ONS 15454 and Cisco ASR 9000 are not compatible.
8.4.6 FEC and E-FEC Modes
As client side traffic passes through the TXP_MR_10E card, it can be digitally wrapped using FEC mode, E-FEC mode, or no error correction at all. The FEC mode setting provides a lower level of error detection and correction than the E-FEC mode setting of the card. As a result, using E-FEC mode allows higher sensitivity (lower optical signal-to-noise ratio [OSNR]) with a lower bit error rate than FEC mode. E-FEC enables longer distance trunk-side transmission than with FEC.
The E-FEC feature is one of three basic modes of FEC operation. FEC can be turned off, FEC can be turned on, or E-FEC can be turned on to provide greater range and lower BER. The default mode is FEC on and E-FEC off. E-FEC is provisioned using CTC.
Because the transponder has no visibility into the data payload and detect circuits, the TXP_MR_10E card does not display circuits under the card view.
8.4.7 Client-to-Trunk Mapping
The TXP_MR_10E card can perform ODU2-to-OCh mapping, which allows operators to provision data payloads in a standard way across 10-Gbps optical links.
Digital wrappers that define client side interfaces are called Optical Data Channel Unit 2 (ODU2) entities in ITU-T G.709. Digital wrappers that define trunk side interfaces are called Optical Channels (OCh) in ITU-T G.709. ODU2 digital wrappers can include Generalized Multiprotocol Label Switching (G-MPLS) signaling extensions to ITU-T G.709 (such as Least Significant Part [LSP] and Generalized Payload Identifier [G-PID] values) to define client interfaces and payload protocols.
8.4.8 Automatic Laser Shutdown
The ALS procedure is supported on both client and trunk interfaces. On the client interface, ALS is compliant with ITU-T G.664 (6/99). On the data application and trunk interface, the switch on and off pulse duration is greater than 60 seconds. The on and off pulse duration is user-configurable. For details on ALS provisioning for the card, refer to the Cisco ONS 15454 DWDM Procedure Guide.
8.4.9 TXP_MR_10E Card-Level Indicators
Table 8-5 lists the three card-level LEDs on the TXP_MR_10E card.
8.4.10 TXP_MR_10E Port-Level Indicators
Table 8-6 lists the two port-level LEDs in the TXP_MR_10E card.
8.5 TXP_MR_10E_C and TXP_MR_10E_L Cards
The TXP_MR_10E_C and TXP_MR_10E_L cards are multirate transponders for the ONS 15454 platform. The cards are fully backward compatible with the TXP_MR_10G and TXP_MR_10E cards. They processes one 10-Gbps signal (client side) into one 10-Gbps, 100-GHz DWDM signal (trunk side). The TXP_MR_10E_C is tunable over the entire set of C-band wavelength channels (82 channels spaced at 50 GHz on the ITU grid). The TXP_MR_10E_L is tunable over the entire set of L-band wavelength channels (80 channels spaced at 50 GHz on the ITU grid) and is particularly well suited for use in networks that employ DS fiber or SMF-28 single-mode fiber.
The advantage of these cards over previous versions (TXP_MR_10G and TXP_MR_10E) is that there is only one version of each card (one C-band version and one L-band version) instead of several versions needed to cover each band.
You can install TXP_MR_10E_C and TXP_MR_10E_L cards in Slots 1 to 6 and 12 to 17 and provision the cards in a linear configuration, BLSR/MS-SPRing, path protection/SNCP, or a regenerator. The cards can be used in the middle of BLSR/MS-SPRing or 1+1 spans when the cards are configured for transparent termination mode.
The TXP_MR_10E_C and TXP_MR_10E_L cards feature a universal transponder 2 (UT2) 1550-nm tunable laser (C band) or a UT2 1580-nm tunable laser (L band) for the trunk port and a separately orderable ONS-XC-10G-S1 1310-nm or ONS-XC-10G-L2 1550-nm laser XFP module for the client port.
Note When the ONS-XC-10G-L2 XFP is installed, the TXP_MR_10E_C or TXP_MR_10E-L card is required to be installed in a high-speed slot (slot 6, 7, 12, or 13)
On its faceplate, the TXP_MR_10E_C and TXP_MR_10E_L cards contain two transmit and receive connector pairs, one for the trunk port and one for the client port. Each connector pair is labeled.
8.5.1 Key Features
The key features of the TXP_MR_10E_C and TXP_MR_10E_L cards are:
•A tri-rate client interface (available through the ONS-XC-10G-S1 XFP, ordered separately):
–OC-192 (SR1)
–10GE (10GBASE-LR)
–10G-FC (1200-SM-LL-L)
•A UT2 module tunable through the entire C band (TXP_MR_10E_C card) or L band (TXP_MR_10E_L card). The channels are spaced at 50 GHz on the ITU grid.
•OC-192 to ITU-T G.709 OTU2 provisionable synchronous and asynchronous mapping.
•The MTU setting is used to display the OverSizePkts counters on the receiving trunk and client port interfaces. Traffic of frame sizes up to 65535 bytes pass without any packet drops, from the client port to the trunk port and vice versa irrespective of the MTU setting.
8.5.2 Faceplates and Block Diagram
Figure 8-13 shows the TXP_MR_10E_C and TXP_MR_10E_L faceplates and block diagram.
Figure 8-13 TXP_MR_10E_C and TXP_MR_10E_L Faceplates and Block Diagram
For information on safety labels for the cards, see the "Class 1M Laser Product Cards" section.
You must use a 15-dB fiber attenuator (10 to 20 dB) when working with the TXP_MR_10E_C or TXP_MR_10E_L card in a loopback on the trunk port. Do not use direct fiber loopbacks with the cards. Using direct fiber loopbacks causes irreparable damage to the cards.
8.5.3 Client Interface
The client interface is implemented with a separately orderable XFP module. The module is a tri-rate transceiver, providing a single port that can be configured in the field to support an OC-192 SR-1 (Telcordia GR-253-CORE) or STM-64 I-64.1 (ITU-T G.691) optical interface, as well as 10GE LAN PHY (10GBASE-LR), 10GE WAN PHY (10GBASE-LW), or 10G-FC signals.
The client side XFP pluggable module supports LC connectors and is equipped with a 1310-nm laser.
8.5.4 DWDM Trunk Interface
On the trunk side, the TXP_MR_10E_C and TXP_MR_10E_L cards provide a 10-Gbps STM-64/OC-192 interface. There are 80 tunable channels available in the 1550-nm C band or 82 tunable channels available in the 1580-nm L band on the 50-GHz ITU grid for the DWDM interface. The TXP_MR_10E_C and TXP_MR_10E_C cards provide 3R transponder functionality for this 10-Gbps trunk interface. Therefore, the card is suited for use in long-range amplified systems. The DWDM interface is compliant with ITU-T G.707, ITU-T G.709, and Telcordia GR-253-CORE standards.
The DWDM trunk port operates at a rate that is dependent on the input signal and the presence or absence of the ITU-T G.709 Digital Wrapper/FEC. The possible trunk rates are:
•OC192 (9.95328 Gbps)
•OTU2 (10.70923 Gbps)
•10GE (10.3125 Gbps) or 10GE into OTU2 (ITU G.sup43 11.0957 Gbps)
•10G-FC (10.51875 Gbps) or 10G-FC into OTU2 (nonstandard 11.31764 Gbps)
The maximum system reach in filterless applications without the use of optical amplification or regenerators is nominally rated at 23 dB over C-SMF fiber. This rating is not a product specification, but is given for informational purposes. It is subject to change.
8.5.5 Enhanced FEC (E-FEC) Feature
A key feature of the TXP_MR_10E_C and TXP_MR_10E_L cards is the availability to configure the forward error correction in three modes: NO FEC, FEC, and E-FEC. The output bit rate is always 10.7092 Gbps as defined in ITU-T G.709, but the error coding performance can be provisioned as follows:
•NO FEC—No forward error correction
•FEC—Standard ITU-T G.975 Reed-Solomon algorithm
•E-FEC—Standard ITU-T G.975.1 I.7 algorithm, which is a super FEC code
8.5.6 FEC and E-FEC Modes
As client side traffic passes through the TXP_MR_10E_C and TXP_MR_10E_L cards, it can be digitally wrapped using FEC mode, E-FEC mode, or no error correction at all. The FEC mode setting provides a lower level of error detection and correction than the E-FEC mode setting of the card. As a result, using E-FEC mode allows higher sensitivity (lower OSNR) with a lower bit error rate than FEC mode. E-FEC enables longer distance trunk-side transmission than with FEC.
The E-FEC feature is one of three basic modes of FEC operation. FEC can be turned off, FEC can be turned on, or E-FEC can be turned on to provide greater range and lower BER. The default mode is FEC on and E-FEC off. E-FEC is provisioned using CTC.
Because the transponder has no visibility into the data payload and detect circuits, the TXP_MR_10E_C and TXP_MR_10E_L cards do not display circuits under the card view.
8.5.7 Client-to-Trunk Mapping
The TXP_MR_10E_C and TXP_MR_10E_L cards can perform ODU2-to-OCh mapping, which allows operators to provision data payloads in a standard way across 10-Gbps optical links.
Digital wrappers that define client side interfaces are called ODU2 entities in ITU-T G.709. Digital wrappers that define trunk side interfaces are called OCh in ITU-T G.709. ODU2 digital wrappers can include G-MPLS signaling extensions to ITU-T G.709 (such as LSP and G-PID values) to define client interfaces and payload protocols.
8.5.8 Automatic Laser Shutdown
The ALS procedure is supported on both client and trunk interfaces. On the client interface, ALS is compliant with ITU-T G.664 (6/99). On the data application and trunk interface, the switch on and off pulse duration is greater than 60 seconds. The on and off pulse duration is user-configurable. For details regarding ALS provisioning for the TXP_MR_10E_C and TXP_MR_10E_L cards, refer to the Cisco ONS 15454 DWDM Procedure Guide.
8.5.9 TXP_MR_10E_C and TXP_MR_10E_L Card-Level Indicators
Table 8-7 lists the three card-level LEDs on the TXP_MR_10E_C and TXP_MR_10E_L cards.
8.5.10 TXP_MR_10E_C and TXP_MR_10E_L Port-Level Indicators
Table 8-8 lists the two port-level LEDs in the TXP_MR_10E_C and TXP_MR_10E_L cards.
8.6 TXP_MR_2.5G and TXPP_MR_2.5G Cards
The TXP_MR_2.5G card processes one 8-Mbps to 2.488-Gbps signal (client side) into one 8-Mbps to 2.5-Gbps, 100-GHz DWDM signal (trunk side). It provides one long-reach STM-16/OC-48 port per card, compliant with ITU-T G.707, ITU-T G.709, ITU-T G.957, and Telcordia GR-253-CORE.
The TXPP_MR_2.5G card processes one 8-Mbps to 2.488-Gbps signal (client side) into two 8-Mbps to 2.5-Gbps, 100-GHz DWDM signals (trunk side). It provides two long-reach STM-16/OC-48 ports per card, compliant with ITU-T G.707, ITU-T G.957, and Telcordia GR-253-CORE.
The TXP_MR_2.5G and TXPP_MR_2.5G cards are tunable over four wavelengths in the 1550-nm, ITU 100-GHz range. They are available in eight versions, each of which covers four wavelengths, for a total coverage of 32 different wavelengths in the 1550-nm range.
Note ITU-T G.709 specifies a form of FEC that uses a "wrapper" approach. The digital wrapper lets you transparently take in a signal on the client side, wrap a frame around it, and restore it to its original form. FEC enables longer fiber links because errors caused by the optical signal degrading with distance are corrected.
The trunk/line port operates at up to 2.488 Gbps (or up to 2.66 Gbps with ITU-T G.709 Digital Wrapper/FEC) over unamplified distances up to 360 km (223.7 miles) with different types of fiber such as C-SMF or higher if dispersion compensation is used.
Because the transponder has no capability to look into the payload and detect circuits, a TXP_MR_2.5G or TXPP_MR_2.5G card does not display circuits under card view.
The TXP_MR_2.5G and TXPP_MR_2.5G cards support 2R (retime, regenerate) and 3R (retime, reshape, and regenerate) modes of operation where the client signal is mapped into a ITU-T G.709 frame. The mapping function is simply done by placing a digital wrapper around the client signal. Only OC-48/STM-16 client signals are fully ITU-T G.709 compliant, and the output bit rate depends on the input client signal. Table 8-9 shows the possible combinations of client interfaces, input bit rates, 2R and 3R modes, and ITU-T G.709 monitoring.
|
|
|
|
|
|---|---|---|---|
OC-48/STM-16 |
2.488 Gbps |
3R |
On or Off |
DV-6000 |
2.38 Gbps |
2R |
— |
2 Gigabit Fibre Channel (2G-FC)/fiber connectivity (FICON) |
2.125 Gbps |
3R1 |
On or Off |
High-Definition Television (HDTV) |
1.48 Gbps |
2R |
— |
Gigabit Ethernet (GE) |
1.25 Gbps |
3R |
On or Off |
1 Gigabit Fibre Channel (1G-FC)/FICON |
1.06 Gbps |
3R |
On or Off |
OC-12/STM-4 |
622 Mbps |
3R |
On or Off |
OC-3/STM-1 |
155 Mbps |
3R |
On or Off |
Enterprise System Connection (ESCON) |
200 Mbps |
2R |
— |
SDI/D1 video |
270 Mbps |
2R |
— |
ISC-1 Compat |
1.06 Gbps |
3R |
Off |
ISC-3 |
1.06 or 2.125 Gbps |
2R |
— |
ETR_CLO |
16 Mbps |
2R |
— |
1 No monitoring |
The output bit rate is calculated for the trunk bit rate by using the 255/238 ratio as specified in ITU-T G.709 for OTU1. Table 8-10 lists the calculated trunk bit rates for the client interfaces with ITU-T G.709 enabled.
For 2R operation mode, the TXP_MR_2.5G and TXPP_MR_2.5G cards have the ability to pass data through transparently from client side interfaces to a trunk side interface, which resides on an ITU grid. The data might vary at any bit rate from 200-Mbps up to 2.38-Gbps, including ESCON and video signals. In this pass-through mode, no performance monitoring (PM) or digital wrapping of the incoming signal is provided, except for the usual PM outputs from the SFPs. Similarly, this card has the ability to pass data through transparently from the trunk side interfaces to the client side interfaces with bit rates varying from 200-Mbps up to 2.38-Gbps. Again, no PM or digital wrapping of received signals is available in this pass-through mode.
For 3R operation mode, the TXP_MR_2.5G and TXPP_MR_2.5G cards apply a digital wrapper to the incoming client interface signals (OC-N/STM-N, 1G-FC, 2G-FC, GE). PM is available on all of these signals except for 2G-FC, and varies depending upon the type of signal. For client inputs other than OC-48/STM-16, a digital wrapper might be applied but the resulting signal is not ITU-T G.709 compliant. The card applies a digital wrapper that is scaled to the frequency of the input signal.
The TXP_MR_2.5G and TXPP_MR_2.5G cards have the ability to take digitally wrapped signals in from the trunk interface, remove the digital wrapper, and send the unwrapped data through to the client interface. PM of the ITU-T G.709 OH and SONET/SDH OH is implemented.
8.6.1 Faceplate
Figure 8-14 shows the TXP_MR_2.5G and TXPP_MR_2.5G faceplates.
Figure 8-14 TXP_MR_2.5G and TXPP_MR_2.5G Faceplates
For information on safety labels for the cards, see the "Class 1M Laser Product Cards" section.
8.6.2 Block Diagram
Figure 8-15 shows a block diagram of the TXP_MR_2.5G and TXPP_MR_2.5G cards.
Figure 8-15 TXP_MR_2.5G and TXPP_MR_2.5G Block Diagram
You must use a 20-dB fiber attenuator (15 to 25 dB) when working with the TXP_MR_2.5G and TXPP_MR_2.5G cards in a loopback on the trunk port. Do not use direct fiber loopbacks with the TXP_MR_2.5G and TXPP_MR_2.5G cards. Using direct fiber loopbacks causes irreparable damage to the TXP_MR_2.5G and TXPP_MR_2.5G cards.
You can install TXP_MR_2.5G and TXPP_MR_2.5G cards in Slots 1 to 6 and 12 to 17. You can provision this card in a linear configuration. TXP_MR_10G and TXPP_MR_2.5G cards cannot be provisioned as a BLSR/MS-SPRing, a path protection/SNCP, or a regenerator. They can be used in the middle of BLSR/MS-SPRing or 1+1 spans only when the card is configured for transparent termination mode.
The TXP_MR_2.5G card features a 1550-nm laser for the trunk/line port and a 1310-nm laser for the client port. It contains two transmit and receive connector pairs (labeled) on the card faceplate. The card uses dual LC connectors for optical cable termination.
The TXPP_MR_2.5G card features a 1550-nm laser for the trunk/line port and a 1310-nm or 850-nm laser (depending on the SFP) for the client port and contains three transmit and receive connector pairs (labeled) on the card faceplate. The card uses dual LC connectors for optical cable termination.
8.6.3 Automatic Laser Shutdown
The ALS procedure is supported on both client and trunk interfaces. On the client interface, ALS is compliant with ITU-T G.664 (6/99). On the data application and trunk interface, the switch on and off pulse duration is greater than 60 seconds. The on and off pulse duration is user-configurable. For details regarding ALS provisioning for the TXP_MR_2.5G and TXPP_MR_2.5G cards, refer to the Cisco ONS 15454 DWDM Procedure Guide.
8.6.4 TXP_MR_2.5G and TXPP_MR_2.5G Card-Level Indicators
Table 8-11 lists the three card-level LEDs on the TXP_MR_2.5G and TXPP_MR_2.5G cards.
8.6.5 TXP_MR_2.5G and TXPP_MR_2.5G Port-Level Indicators
Table 8-12 lists the four port-level LEDs on the TXP_MR_2.5G and TXPP_MR_2.5G cards.
8.7 MXP_2.5G_10G Card
The MXP_2.5G_10G card multiplexes/demultiplexes four 2.5-Gbps signals (client side) into one 10-Gbps, 100-GHz DWDM signal (trunk side). It provides one extended long-range STM-64/OC-192 port per card on the trunk side (compliant with ITU-T G.707, ITU-T G.709, ITU-T G.957, and Telcordia GR-253-CORE) and four intermediate- or short-range OC-48/STM-16 ports per card on the client side. The port operates at 9.95328 Gbps over unamplified distances up to 80 km (50 miles) with different types of fiber such as C-SMF or dispersion compensated fiber limited by loss and/or dispersion.
Client ports on the MXP_2.5G_10G card are also interoperable with SONET OC-1 (STS-1) fiber optic signals defined in Telcordia GR-253-CORE. An OC-1 signal is the equivalent of one DS-3 channel transmitted across optical fiber. OC-1 is primarily used for trunk interfaces to phone switches in the United States. There is no SDH equivalent for SONET OC-1.
The MXP_2.5G_10G card is tunable over two neighboring wavelengths in the 1550-nm, ITU 100-GHz range. It is available in 16 different versions, each of which covers two wavelengths, for a total coverage of 32 different wavelengths in the 1550-nm range.
Note ITU-T G.709 specifies a form of FEC that uses a "wrapper" approach. The digital wrapper lets you transparently take in a signal on the client side, wrap a frame around it and restore it to its original form. FEC enables longer fiber links because errors caused by the optical signal degrading with distance are corrected.
The port can also operate at 10.70923 Gbps in ITU-T G.709 Digital Wrapper/FEC mode.
Because the transponder has no capability to look into the payload and detect circuits, an MXP_2.5G_10G card does not display circuits under card view.
You must use a 20-dB fiber attenuator (15 to 25 dB) when working with the MXP_2.5G_10G card in a loopback on the trunk port. Do not use direct fiber loopbacks with the MXP_2.5G_10G card. Using direct fiber loopbacks causes irreparable damage to the MXP_2.5G_10G card.
You can install MXP_2.5G_10G cards in Slots 1 to 6 and 12 to 17.
Do not install an MXP_2.5G_10G card in Slot 3 if you have installed a DS3/EC1-48 card in Slots 1or 2. Likewise, do not install an MXP_2.5G_10G card in Slot 17 if you have installed a DS3/EC1-48 card in Slots 15 or 16. If you do, the cards will interact and cause DS-3 bit errors.
You can provision this card in a linear configuration. MXP_2.5G_10G cards cannot be provisioned as a BLSR/MS-SPRing, a path protection/SNCP, or a regenerator. They can be used in the middle of BLSR/MS-SPRing or 1+1 spans only when the card is configured for transparent termination mode.
The MXP_2.5G_10G port features a 1550-nm laser on the trunk port and four 1310-nm lasers on the client ports and contains five transmit and receive connector pairs (labeled) on the card faceplate. The card uses a dual LC connector on the trunk side and SFP connectors on the client side for optical cable termination.
Note When you create a 4xOC-48 OCHCC circuit, you need to select the G.709 and Synchronous options. A 4xOC-48 OCHCC circuit is supported by G.709 and synchronous mode. This is necessary to provision a 4xOC-48 OCHCC circuit.
Figure 8-16 shows the MXP_2.5G_10G faceplate.
Figure 8-16 MXP_2.5G_10G Faceplate
For information on safety labels for the card, see the "Class 1 Laser Product Cards" section.
Figure 8-17 shows a block diagram of the MXP_2.5G_10G card.
Figure 8-17 MXP_2.5G_10G Card Block Diagram
8.7.1 Timing Synchronization
The MXP_2.5G_10G card is synchronized to the TCC2/TCC2P clock during normal conditions and transmits the ITU-T G.709 frame using this clock. The TCC2/TCC2P card can operate from an external building integrated timing supply (BITS) clock, an internal Stratum 3 clock, or from clock recovered from one of the four valid client clocks. If clocks from both TCC2/TCC2P cards are not available, the MXP_2.5G_10G card switches automatically (with errors, not hitless) to an internal 19.44 MHz clock that does not meet SONET clock requirements. This will result in a clock alarm.
8.7.2 Automatic Laser Shutdown
The ALS procedure is supported on both client and trunk interfaces. On the client interface, ALS is compliant with ITU-T G.664 (6/99). On the data application and trunk interface, the switch on and off pulse duration is greater than 60 seconds. The on and off pulse duration is user-configurable. For details regarding ALS provisioning for the MXP_2.5G_10G card, refer to the Cisco ONS 15454 DWDM Procedure Guide.
8.7.3 MXP_2.5G_10G Card-Level Indicators
Table 8-13 describes the three card-level LEDs on the MXP_2.5G_10G card.
8.7.3.1 MXP_2.5G_10G Port-Level Indicators
Table 8-14 describes the four port-level LEDs on the MXP_2.5G_10G card.
8.7.4 MXP_2.5G_10E Card
The faceplate designation of the card is "4x2.5G 10E MXP." The MXP_2.5G_10E card is a DWDM muxponder for the ONS 15454 platform that supports full transparent termination the client side. The card multiplexes four 2.5 Gbps client signals (4 x OC48/STM-16 SFP) into a single 10-Gbps DWDM optical signal on the trunk side. The MXP_2.5G_10E provides wavelength transmission service for the four incoming 2.5 Gbps client interfaces. The MXP_2.5G_10E muxponder passes all SONET/SDH overhead bytes transparently.
The digital wrapper function (ITU-T G.709 compliant) formats the DWDM wavelength so that it can be used to set up generic communications channels (GCCs) for data communications, enable FEC, or facilitate performance monitoring.
The MXP_2.5G_10E works with optical transport network (OTN) devices defined in ITU-T G.709. The card supports ODU1 to OTU2 multiplexing, an industry standard method for asynchronously mapping a SONET/SDH payload into a digitally wrapped envelope. See the "Multiplexing Function" section.
The MXP_2.5G_10E card is not compatible with the MXP_2.5G_10G card, which does not support full transparent termination. You can install MXP_2.5G_10E cards in Slots 1 to 6 and 12 to 17. You can provision this card in a linear configuration, as a BLSR/MS-SPRing, a path protection/SNCP, or a regenerator. The card can be used in the middle of BLSR/MS-SPRing or 1+1 spans when the card is configured for transparent termination mode.
The MXP_2.5G_10E features a 1550-nm laser on the trunk port and four 1310-nm lasers on the client ports and contains five transmit and receive connector pairs (labeled) on the card faceplate. The card uses a dual LC connector on the trunk side and uses SFP modules on the client side for optical cable termination. The SFP pluggable modules are short reach (SR) or intermediate reach (IR) and support an LC fiber connector.
Note When you create a 4xOC-48 OCHCC circuit, you need to select the G.709 and Synchronous options. A 4xOC-48 OCHCC circuit is supported by G.709 and synchronous mode. This is necessary to provision a 4xOC-48 OCHCC circuit.
8.7.4.1 Key Features
The MXP_2.5G_10E card has the following high level features:
•Four 2.5 Gbps client interfaces (OC-48/STM-16) and one 10 Gbps trunk. The four OC-48 signals are mapped into a ITU-T G.709 OTU2 signal using standard ITU-T G.709 multiplexing.
•Onboard E-FEC processor: The processor supports both standard Reed-Solomon (RS, specified in ITU-T G.709) and E-FEC, which allows an improved gain on trunk interfaces with a resultant extension of the transmission range on these interfaces. The E-FEC functionality increases the correction capability of the transponder to improve performance, allowing operation at a lower OSNR compared to the standard RS (237,255) correction algorithm. A new block code (BCH) algorithm implemented in E-FEC allows recovery of an input BER up to 1E-3.
•Pluggable client interface optic modules: The MXP_2.5G_10E card has modular interfaces. Two types of optics modules can be plugged into the card. These include an OC-48/STM 16 SR-1 interface with a 7-km (4.3-mile) nominal range (for short range and intra-office applications) and an IR-1 interface with a range up to 40 km (24.9 miles). SR-1 is defined in Telcordia GR-253-CORE and in I-16 (ITU-T G.957). IR-1 is defined in Telcordia GR-253-CORE and in S-16-1 (ITU-T G.957).
•High level provisioning support: The MXP_2.5G_10E card is initially provisioned using Cisco TransportPlanner software. Subsequently, the card can be monitored and provisioned using CTC software.
•Link monitoring and management: The MXP_2.5G_10E card uses standard OC-48 OH (overhead) bytes to monitor and manage incoming interfaces. The card passes the incoming SDH/SONET data stream and its overhead bytes transparently.
•Control of layered SONET/SDH transport overhead: The card is provisionable to terminate regenerator section overhead. This is used to eliminate forwarding of unneeded layer overhead. It can help reduce the number of alarms and help isolate faults in the network.
•Automatic timing source synchronization: The MXP_2.5G_10E normally synchronizes from the TCC2/TCC2P card. If for some reason, such as maintenance or upgrade activity, the TCC2/TCC2P is not available, the MXP_2.5G_10E automatically synchronizes to one of the input client interface clocks.
•Configurable squelching policy: The card can be configured to squelch the client interface output if there is LOS at the DWDM receiver or if there is a remote fault. In the event of a remote fault, the card manages multiplex section alarm indication signal (MS-AIS) insertion.
8.7.5 Faceplate
Figure 8-18 shows the MXP_2.5G_10E faceplate.
Figure 8-18 MXP_2.5G_10E Faceplate
For information on safety labels for the card, see the "Class 1 Laser Product Cards" section.
Figure 8-19 shows a block diagram of the MXP_2.5G_10E card.
Figure 8-19 MXP_2.5G_10E Block Diagram
8.7.6 Client Interfaces
The MXP_2.5G_10E provides four intermediate- or short-range OC-48/STM-16 ports per card on the client side. Both SR-1 or IR-1 optics can be supported and the ports use SFP connectors. The client interfaces use four wavelengths in the 1310-nm, ITU 100-MHz-spaced, channel grid.
8.7.6.1 DWDM Interface
The MXP_2.5G_10E serves as an OTN multiplexer, transparently mapping four OC-48 channels asynchronously to ODU1 into one 10-Gbps trunk. The DWDM trunk is tunable for transmission over four wavelengths in the 1550-nm, ITU 100-GHz spaced channel grid.
You must use a 20-dB fiber attenuator (15 to 25 dB) when working with the MXP_2.5G_10E card in a loopback on the trunk port. Do not use direct fiber loopbacks with the MXP_2.5G_10E card. Using direct fiber loopbacks causes irreparable damage to the MXP_2.5G_10E card.
8.7.7 Multiplexing Function
The muxponder is an integral part of the reconfigurable optical add/drop multiplexer (ROADM) network. The key function of MXP_2.5G_10E is to multiplex 4 OC-48/STM16 signals onto one ITU-T G.709 OTU2 optical signal (DWDM transmission). The multiplexing mechanism allows the signal to be terminated at a far-end node by another MXP_2.5G_10E card.
Termination mode transparency on the muxponder is configured using OTUx and ODUx OH bytes. The ITU-T G.709 specification defines OH byte formats that are used to configure, set, and monitor frame alignment, FEC mode, section monitoring, tandem connection monitoring, and termination mode transparency.
The MXP_2.5G_10E card performs ODU to OTU multiplexing as defined in ITU-T G.709. The ODU is the framing structure and byte definition (ITU-T G.709 digital wrapper) used to define the data payload coming into one of the SONET/SDH client interfaces on MXP_2.5G_10E. The term ODU1 refers to an ODU that operates at 2.5-Gbps line rate. On the MXP_2.5G_10E, there are four client interfaces that can be defined using ODU1 framing structure and format by asserting a ITU-T G.709 digital wrapper.
The output of the muxponder is a single 10-Gbps DWDM trunk interface defined using OTU2. It is within the OTU2 framing structure that FEC or E-FEC information is appended to enable error checking and correction.
8.7.8 Timing Synchronization
The MXP_2.5G_10E card is synchronized to the TCC2/TCC2P clock during normal conditions and transmits the ITU-T G.709 frame using this clock. No holdover function is implemented. If neither TCC2/TCC2P clock is available, the MXP_2.5G_10E switches automatically (hitless) to the first of the four valid client clocks with no time restriction as to how long it can run on this clock. The MXP_2.5G_10E continues to monitor the TCC2/TCC2P card. If a TCC2/TCC2P card is restored to working order, the MXP_2.5G_10E reverts to the normal working mode of running from the TCC2/TCC2P clock. If there is no valid TCC2/TCC2P clock and all of the client channels become invalid, the card waits (no valid frames processed) until one of the TCC2/TCC2P cards supplies a valid clock. In addition, the card is allowed to select the recovered clock from one active and valid client channel and supply that clock to the TCC2/TCC2P card.
8.7.9 Enhanced FEC (E-FEC) Capability
The MXP_2.5G_10E can configure the FEC in three modes: NO FEC, FEC, and E-FEC. The output bit rate is always 10.7092 Gbps as defined in ITU-T G.709, but the error coding performance can be provisioned as follows:
•NO FEC—No FEC
•FEC—Standard ITU-T G.975 Reed-Solomon algorithm
•E-FEC—Standard ITU-T G.975.1 I.7, two orthogonally concatenated BCH super FEC code. This FEC scheme contains three parameterizations of the same scheme of two orthogonally interleaved BCH. The constructed code is decoded iteratively to achieve the expected performance.
8.7.10 FEC and E-FEC Modes
As client side traffic passes through the MXP_2.5G_10E card, it can be digitally wrapped using FEC mode error correction or E-FEC mode error correction (or no error correction at all). The FEC mode setting provides a lower level of error detection and correction than the E-FEC mode setting of the card. As a result, using E-FEC mode allows higher sensitivity (lower OSNR) with a lower BER than FEC mode. E-FEC enables longer distance trunk-side transmission than with FEC.
The E-FEC feature is one of three basic modes of FEC operation. FEC can be turned off, FEC can be turned on, or E-FEC can be turned on to provide greater range and lower BER. The default mode is FEC on and E-FEC off. E-FEC is provisioned using CTC.
8.7.11 SONET/SDH Overhead Byte Processing
The card passes the incoming SONET/SDH data stream and its overhead bytes for the client signal transparently. The card can be provisioned to terminate regenerator section overhead. This is used to eliminate forwarding of unneeded layer overhead. It can help reduce the number of alarms and help isolate faults in the network.
8.7.12 Client Interface Monitoring
The following parameters are monitored on the MXP_2.5G_10E card:
•Laser bias current is measured as a PM parameter
•LOS is detected and signaled
•Transmit (TX) and receive (RX) power are monitored
The following parameters are monitored in real time mode (one second):
•Optical power transmitted (client)
•Optical power received (client)
In case of loss of communication (LOC) at the DWDM receiver or far-end LOS, the client interface behavior is configurable. AIS can be invoked or the client signal can be squelched.
8.7.13 Wavelength Identification
The card uses trunk lasers that are wave-locked, which allows the trunk transmitter to operate on the ITU grid effectively. Table 8-15 describes the required trunk transmit laser wavelengths. The laser is tunable over eight wavelengths at 50-GHz spacing or four at 100-GHz spacing.
8.7.14 Automatic Laser Shutdown
The ALS procedure is supported on both client and trunk interfaces. On the client interface, ALS is compliant with ITU-T G.664 (6/99). On the data application and trunk interface, the switch on and off pulse duration is greater than 60 seconds. The on and off pulse duration is user-configurable. For details regarding ALS provisioning for the MXP_2.5G_10E card, refer to the Cisco ONS 15454 DWDM Procedure Guide.
8.7.15 Jitter
For SONET and SDH signals, the MXP_2.5G_10E card complies with Telcordia GR-253-CORE, ITU-T G.825, and ITU-T G.873 for jitter generation, jitter tolerance, and jitter transfer. See the "Jitter Considerations" section for more information.
8.7.16 Lamp Test
The MXP_2.5G_10E card supports a lamp test function that is activated from the ONS 15454 front panel or through CTC to ensure that all LEDs are functional.
8.7.17 Onboard Traffic Generation
The MXP_2.5G_10E card provides internal traffic generation for testing purposes according to pseudo-random bit sequence (PRBS), SONET/SDH, or ITU-T G.709.
8.7.18 MXP_2.5G_10E Card-Level Indicators
Table 8-16 describes the three card-level LEDs on the MXP_2.5G_10E card.
8.7.19 MXP_2.5G_10E Port-Level Indicators
Table 8-17 describes the port-level LEDs on the MXP_2.5G_10E card.
8.8 MXP_2.5G_10E_C and MXP_2.5G_10E_L Cards
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards are DWDM muxponders for the ONS 15454 platform that support transparent termination mode on the client side. The faceplate designation of the cards is "4x2.5G 10E MXP C" for the MXP_2.5G_10E_C card and "4x2.5G 10E MXP L" for the MXP_2.5G_10E_L card. The cards multiplex four 2.5-Gbps client signals (4 x OC48/STM-16 SFP) into a single 10-Gbps DWDM optical signal on the trunk side. The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards provide wavelength transmission service for the four incoming 2.5 Gbps client interfaces. The MXP_2.5G_10E_C and MXP_2.5G_10E_L muxponders pass all SONET/SDH overhead bytes transparently.
The digital wrapper function (ITU-T G.709 compliant) formats the DWDM wavelength so that it can be used to set up GCCs for data communications, enable FEC, or facilitate PM.
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards work with OTN devices defined in ITU-T G.709. The cards support ODU1 to OTU2 multiplexing, an industry standard method for asynchronously mapping a SONET/SDH payload into a digitally wrapped envelope. See the "Multiplexing Function" section.
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards are not compatible with the MXP_2.5G_10G card, which does not support transparent termination mode.
You can install MXP_2.5G_10E_C and MXP_2.5G_10E_L cards in Slots 1 to 6 and 12 to 17. You can provision a card in a linear configuration, as a BLSR/MS-SPRing, a path protection/SNCP, or a regenerator. The cards can be used in the middle of BLSR/MS-SPRing or 1+1 spans when the cards are configured for transparent termination mode.
The MXP_2.5G_10E_C card features a tunable 1550-nm C-band laser on the trunk port. The laser is tunable across 82 wavelengths on the ITU grid with 50-GHz spacing between wavelengths. The MXP_2.5G_10E_L features a tunable 1580-nm L-band laser on the trunk port. The laser is tunable across 80 wavelengths on the ITU grid, also with 50-GHz spacing. Each card features four 1310-nm lasers on the client ports and contains five transmit and receive connector pairs (labeled) on the card faceplate. The cards uses dual LC connectors on the trunk side and use SFP modules on the client side for optical cable termination. The SFP pluggable modules are SR or IR and support an LC fiber connector.
Note When you create a 4xOC-48 OCHCC circuit, you need to select the G.709 and Synchronous options. A 4xOC-48 OCHCC circuit is supported by G.709 and synchronous mode. This is necessary to provision a 4xOC-48 OCHCC circuit.
8.8.1 Key Features
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards have the following high level features:
•Four 2.5 Gbps client interfaces (OC-48/STM-16) and one 10 Gbps trunk. The four OC-48 signals are mapped into a ITU-T G.709 OTU2 signal using standard ITU-T G.709 multiplexing.
•Onboard E-FEC processor: The processor supports both standard RS (specified in ITU-T G.709) and E-FEC, which allows an improved gain on trunk interfaces with a resultant extension of the transmission range on these interfaces. The E-FEC functionality increases the correction capability of the transponder to improve performance, allowing operation at a lower OSNR compared to the standard RS (237,255) correction algorithm. A new BCH algorithm implemented in E-FEC allows recovery of an input BER up to 1E-3.
•Pluggable client interface optic modules: The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards have modular interfaces. Two types of optics modules can be plugged into the card. These include an OC-48/STM 16 SR-1 interface with a 7-km (4.3-mile) nominal range (for short range and intra-office applications) and an IR-1 interface with a range up to 40 km (24.9 miles). SR-1 is defined in Telcordia GR-253-CORE and in I-16 (ITU-T G.957). IR-1 is defined in Telcordia GR-253-CORE and in S-16-1 (ITU-T G.957).
•High level provisioning support: The cards are initially provisioned using Cisco TransportPlanner software. Subsequently, the card can be monitored and provisioned using CTC software.
•Link monitoring and management: The cards use standard OC-48 OH (overhead) bytes to monitor and manage incoming interfaces. The cards pass the incoming SDH/SONET data stream and its overhead bytes transparently.
•Control of layered SONET/SDH transport overhead: The cards are provisionable to terminate regenerator section overhead. This is used to eliminate forwarding of unneeded layer overhead. It can help reduce the number of alarms and help isolate faults in the network.
•Automatic timing source synchronization: The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards normally synchronize from the TCC2/TCC2P card. If for some reason, such as maintenance or upgrade activity, the TCC2/TCC2P is not available, the cards automatically synchronize to one of the input client interface clocks.
•Configurable squelching policy: The cards can be configured to squelch the client interface output if there is LOS at the DWDM receiver or if there is a remote fault. In the event of a remote fault, the card manages MS-AIS insertion.
•The cards are tunable across the full C band (MXP_2.5G_10E_C) or full L band (MXP_2.5G_10E_L), thus eliminating the need to use different versions of each card to provide tunability across specific wavelengths in a band.
8.8.2 Faceplate
Figure 8-20 shows the MXP_2.5G_10E_C and MXP_2.5G_10E_L faceplates and block diagram.
Figure 8-20 MXP_2.5G_10E _C and MXP_2.5G_10E_L Faceplates and Block Diagram
For information on safety labels for the cards, see the "Class 1 Laser Product Cards" section.
8.8.3 Client Interfaces
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards provide four intermediate- or short-range OC-48/STM-16 ports per card on the client side. Both SR-1 and IR-1 optics can be supported and the ports use SFP connectors. The client interfaces use four wavelengths in the 1310-nm, ITU 100-GHz-spaced, channel grid.
8.8.4 DWDM Interface
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards serve as OTN multiplexers, transparently mapping four OC-48 channels asynchronously to ODU1 into one 10-Gbps trunk. For the MXP_2.5G_10E_C card, the DWDM trunk is tunable for transmission over the entire C band and for the MXP_2.5G_10E_L card, the DWDM trunk is tunable for transmission over the entire L band. Channels are spaced at 50-GHz on the ITU grid.
You must use a 20-dB fiber attenuator (15 to 25 dB) when working with the cards in a loopback on the trunk port. Do not use direct fiber loopbacks with the cards. Using direct fiber loopbacks causes irreparable damage to the MXP_2.5G_10E_C and MXP_2.5G_10E_L cards.
8.8.5 Multiplexing Function
The muxponder is an integral part of the ROADM network. The key function of the MXP_2.5G_10E_C and MXP_2.5G_10E_L cards is to multiplex four OC-48/STM16 signals onto one ITU-T G.709 OTU2 optical signal (DWDM transmission). The multiplexing mechanism allows the signal to be terminated at a far-end node by another similar card.
Transparent termination on the muxponder is configured using OTUx and ODUx OH bytes. The ITU-T G.709 specification defines OH byte formats that are used to configure, set, and monitor frame alignment, FEC mode, section monitoring, tandem connection monitoring, and transparent termination mode.
The MXP_2.5G_10E and MXP_2.5G_10E_L cards perform ODU to OTU multiplexing as defined in ITU-T G.709. The ODU is the framing structure and byte definition (ITU-T G.709 digital wrapper) used to define the data payload coming into one of the SONET/SDH client interfaces on the cards. The term ODU1 refers to an ODU that operates at 2.5-Gbps line rate. On the cards, there are four client interfaces that can be defined using ODU1 framing structure and format by asserting a ITU-T G.709 digital wrapper.
The output of the muxponder is a single 10-Gbps DWDM trunk interface defined using OTU2. It is within the OTU2 framing structure that FEC or E-FEC information is appended to enable error checking and correction.
8.8.6 Timing Synchronization
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards are synchronized to the TCC2/TCC2P clock during normal conditions and transmit the ITU-T G.709 frame using this clock. No holdover function is implemented. If neither TCC2/TCC2P clock is available, the card switches automatically (hitless) to the first of the four valid client clocks with no time restriction as to how long it can run on this clock. The card continues to monitor the TCC2/TCC2P card. If a TCC2/TCC2P card is restored to working order, the card reverts to the normal working mode of running from the TCC2/TCC2P clock. If there is no valid TCC2/TCC2P clock and all of the client channels become invalid, the card waits (no valid frames processed) until one of the TCC2/TCC2P cards supplies a valid clock. In addition, the card is allowed to select the recovered clock from one active and valid client channel and supply that clock to the TCC2/TCC2P card.
8.8.7 Enhanced FEC (E-FEC) Capability
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards can configure the FEC in three modes: NO FEC, FEC, and E-FEC. The output bit rate is always 10.7092 Gbps as defined in ITU-T G.709, but the error coding performance can be provisioned as follows:
•NO FEC—No FEC
•FEC—Standard ITU-T G.975 Reed-Solomon algorithm
•E-FEC—Standard ITU-T G.975.1 I.7, two orthogonally concatenated BCH super FEC code. This FEC scheme contains three parameterizations of the same scheme of two orthogonally interleaved block codes (BCH). The constructed code is decoded iteratively to achieve the expected performance.
8.8.8 FEC and E-FEC Modes
As client side traffic passes through the card, it can be digitally wrapped using FEC mode error correction or E-FEC mode error correction (or no error correction at all). The FEC mode setting provides a lower level of error detection and correction than the E-FEC mode setting of the card. As a result, using E-FEC mode allows higher sensitivity (lower OSNR) with a lower BER than FEC mode. E-FEC enables longer distance trunk-side transmission than with FEC.
The E-FEC feature is one of three basic modes of FEC operation. FEC can be turned off, FEC can be turned on, or E-FEC can be turned on to provide greater range and lower BER. The default mode is FEC on and E-FEC off. E-FEC is provisioned using CTC.
8.8.9 SONET/SDH Overhead Byte Processing
The card passes the incoming SONET/SDH data stream and its overhead bytes for the client signal transparently. The card can be provisioned to terminate regenerator section overhead. This is used to eliminate forwarding of unneeded layer overhead. It can help reduce the number of alarms and help isolate faults in the network.
8.8.10 Client Interface Monitoring
The following parameters are monitored on the MXP_2.5G_10E_C and MXP_2.5G_10E_L cards:
•Laser bias current is measured as a PM parameter.
•LOS is detected and signaled.
•Rx and Tx power are monitored.
The following parameters are monitored in real time mode (one second):
•Optical power transmitted (client)
•Optical power received (client)
In case of LOC at the DWDM receiver or far-end LOS, the client interface behavior is configurable. AIS can be invoked or the client signal can be squelched.
8.8.11 Wavelength Identification
The card uses trunk lasers that are wavelocked, which allows the trunk transmitter to operate on the ITU grid effectively. Both the MXP_2.5G_10E_C and MXP_2.5G_10E_L cards implement the UT2 module. The MXP_2.5G_10E_C card uses a C-band version of the UT2 and the MXP_2.5G_10E_L card uses an L-band version.
Table 8-18 describes the required trunk transmit laser wavelengths for the MXP_2.5G_10E_C card. The laser is tunable over 82 wavelengths in the C band at 50-GHz spacing on the ITU grid.
Table 8-19 describes the required trunk transmit laser wavelengths for the MXP_2.5G_10E_L card. The laser is fully tunable over 80 wavelengths in the L band at 50-GHz spacing on the ITU grid.
8.8.12 Automatic Laser Shutdown
The ALS procedure is supported on both client and trunk interfaces. On the client interface, ALS is compliant with ITU-T G.664 (6/99). On the data application and trunk interface, the switch on and off pulse duration is greater than 60 seconds. The on and off pulse duration is user-configurable. For details regarding ALS provisioning for the MXP_2.5G_10E_C and MXP_2.5G_10E_L cards, see the Cisco ONS 15454 DWDM Procedure Guide.
8.8.13 Jitter
For SONET and SDH signals, the MXP_2.5G_10E_C and MXP_2.5G_10E_L cards comply with Telcordia GR-253-CORE, ITU-T G.825, and ITU-T G.873 for jitter generation, jitter tolerance, and jitter transfer. See the "Jitter Considerations" section for more information.
8.8.14 Lamp Test
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards support a lamp test function that is activated from the ONS 15454 front panel or through CTC to ensure that all LEDs are functional.
8.8.15 Onboard Traffic Generation
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards provide internal traffic generation for testing purposes according to PRBS, SONET/SDH, or ITU-T G.709.
8.8.16 MXP_2.5G_10E_C and MXP_2.5G_10E_L Card-Level Indicators
Table 8-20 describes the three card-level LEDs on the MXP_2.5G_10E_C and MXP_2.5G_10E_L cards.
8.8.17 MXP_2.5G_10E and MXP_2.5G_10E_L Port-Level Indicators
Table 8-21 describes the port-level LEDs on the MXP_2.5G_10E_C and MXP_2.5G_10E_L cards.
8.9 MXP_MR_2.5G and MXPP_MR_2.5G Cards
The MXP_MR_2.5G card aggregates a mix and match of client Storage Area Network (SAN) service client inputs (GE, FICON, Fibre Channel, and ESCON) into one 2.5 Gbps STM-16/OC-48 DWDM signal on the trunk side. It provides one long-reach STM-16/OC-48 port per card and is compliant with Telcordia GR-253-CORE.
Note In Software Release 7.0 and later, two additional operating modes have been made available to the user: pure ESCON (all 8 ports running ESCON), and mixed mode (Port 1 running FC/GE/FICON, and Ports 5 through 8 running ESCON). When the card is part of a system running Software Release 6.0 or below, only one operating mode, (FC/GE) is available for use.
The 2.5-Gbps Multirate Muxponder-Protected-100 GHz-Tunable 15xx.xx-15yy.yy (MXPP_MR_2.5G) card aggregates various client SAN service client inputs (GE, FICON, Fibre Channel, and ESCON) into one 2.5 Gbps STM-16/OC-48 DWDM signal on the trunk side. It provides two long-reach STM-16/OC-48 ports per card and is compliant with ITU-T G.957 and Telcordia GR-253-CORE.
Because the cards are tunable to one of four adjacent grid channels on a 100-GHz spacing, each card is available in eight versions, with 15xx.xx representing the first wavelength and 15yy.yy representing the last wavelength of the four available on the card. In total, 32 DWDM wavelengths are covered in accordance with the ITU-T 100-GHz grid standard, G.692, and Telcordia GR-2918-CORE, Issue 2. The card versions along with their corresponding wavelengths are shown in Table 8-22.
The muxponders are intended to be used in applications with long DWDM metro or regional unregenerated spans. Long transmission distances are achieved through the use of flat gain optical amplifiers.
The client interface supports the following payload types:
•2G FC
•1G FC
•2G FICON
•1G FICON
•GE
•ESCON
Note Because the client payload cannot oversubscribe the trunk, a mix of client signals can be accepted, up to a maximum limit of 2.5 Gbps.
Table 8-23 shows the input data rate for each client interface, and the encapsulation method. The current version of the ITU-T Transparent Generic Framing Procedure (GFP-T) G.7041 supports transparent mapping of 8B/10B block-coded protocols, including Gigabit Ethernet, Fibre Channel, and FICON.
In addition to the GFP mapping, 1-Gbps traffic on Port 1 or 2 of the high-speed serializer/deserializer (SERDES) is mapped to an STS-24c channel. If two 1-Gbps client signals are present at Port 1 and Port 2 of the SERDES, the Port 1 signal is mapped into the first STS-24c channel and the Port 2 signal into the second STS-24c channel. The two channels are then mapped into an OC-48 trunk channel.
Table 8-24 shows some of the mix and match possibilities on the various client ports. The table is intended to show the full client payload configurations for the card.
8.9.1 Performance Monitoring
GFP-T performance monitoring (GFP-T PM) is available via remote monitoring (RMON), and trunk PM is managed according to Telcordia GR-253-CORE and ITU G.783/826. Client PM is achieved through RMON for FC and GE.
8.9.2 Distance Extension
A buffer-to-buffer credit management scheme provides FC flow control. With this feature enabled, a port indicates the number of frames that can be sent to it (its buffer credit), before the sender is required to stop transmitting and wait for the receipt of a "ready" indication The MXP_MR_2.5G and MXPP_MR_2.5 cards support FC credit-based flow control with a buffer-to-buffer credit extension of up to 1600 km (994.2 miles) for 1G FC and up to 800 km (497.1 miles) for 2G FC. The feature can be enabled or disabled.
8.9.3 Slot Compatibility
You can install MXP_MR_2.5G and MXPP_MR_2.5G cards in Slots 1 to 6 and 12 to 17. The TCC2/TCC2P card is the only other card required to be used with these muxponder cards. Cross-connect cards do not affect the operation of the muxponder cards.
8.9.4 Interoperability with Cisco MDS Switches
You can provision a string (port name) for each fiber channel/FICON interface on the MXP_MR_2.5G and MXPP_MR_2.5G cards, which allows the MDS Fabric Manager to create a link association between that SAN port and a SAN port on a Cisco MDS 9000 switch.
8.9.5 Client and Trunk Ports
The MXP_MR_2.5G card features a 1550-nm laser for the trunk/line port and a 1310-nm or 850-nm laser (depending on the SFP) for the client ports. The card contains eight 12.5 degree downward tilt SFP modules for the client interfaces. For optical termination, each SFP uses two LC connectors, which are labeled TX and RX on the faceplate. The trunk port is a dual-LC connector with a 45 degree downward angle.
The MXPP_MR_2.5G card features a 1550-nm laser for the trunk/line port and a 1310-nm or 850-nm laser (depending on the SFP) for the client port. The card contains eight 12.5 degree downward tilt SFP modules for the client interfaces. For optical termination, each SFP uses two LC connectors, which are labeled TX and RX on the faceplate. There are two trunk port connectors (one for working and one for protect). Each is a dual-LC connector with a 45-degree downward angle.
8.9.6 Faceplates
Figure 8-21 shows the MXP_MR_2.5G and MXPP_MR_2.5G faceplates.
Figure 8-21 MXP_MR_2.5G and MXPP_MR_2.5G Faceplates
For information on safety labels for the cards, see the "Class 1M Laser Product Cards" section.
8.9.7 Block Diagram
Figure 8-22 shows a block diagram of the MXP_MR_2.5G card. The card has eight SFP client interfaces. Ports 1 and 2 can be used for GE, FC, FICON, or ESCON. Ports 3 through 8 are used for ESCON client interfaces. There are two SERDES blocks dedicated to the high-speed interfaces (GE, FC, FICON, and ESCON) and two SERDES blocks for the ESCON interfaces. A FPGA is provided to support different configurations for different modes of operation. This FPGA has a Universal Test and Operations Physical Interface for ATM (UTOPIA) interface. A transceiver add/drop multiplexer (TADM) chip supports framing. Finally, the output signal is serialized and connected to the trunk front end with a direct modulation laser. The trunk receive signal is converted into an electrical signal with an avalanche photodiode (APD), is deserialized, and is then sent to the TADM framer and FPGA.
The MXPP_MR_2.5G is the same, except a 50/50 splitter divides the power at the trunk interface. In the receive direction, there are two APDs, two SERDES blocks, and two TADM framers. This is necessary to monitor both the working and protect paths. A switch selects one of the two paths to connect to the client interface.
Figure 8-22 MXP_MR_2.5G and MXPP_MR_2.5G Block Diagram
You must use a 20-dB fiber attenuator (15 to 25 dB) when working with the MXP_MR_2.5G and MXPP_MR_2.5G cards in a loopback configuration on the trunk port. Do not use direct fiber loopbacks with the MXP_MR_2.5G and MXPP_MR_2.5G cards. Using direct fiber loopbacks causes irreparable damage to the MXP_MR_2.5G and MXPP_MR_2.5G cards.
8.9.8 Automatic Laser Shutdown
The ALS procedure is supported on both client and trunk interfaces. On the client interface, ALS is compliant with ITU-T G.664 (6/99). On the data application and trunk interface, the switch on and off pulse duration is greater than 60 seconds. The on and off pulse duration is user-configurable. For details regarding ALS provisioning for the MXP_MR_2.5G and MXPP_MR_2.5G cards, refer to the Cisco ONS 15454 DWDM Procedure Guide.
8.9.9 MXP_MR_2.5G and MXPP_MR_2.5G Card-Level Indicators
Table 8-25 lists the card-level LEDs on the MXP_MR_2.5G and MXPP_MR_2.5G cards.
8.9.10 MXP_MR_2.5G and MXPP_MR_2.5G Port-Level Indicators
Table 8-26 lists the port-level LEDs on the MXP_MR_2.5G and MXPP_MR_2.5G cards.
8.10 MXP_MR_10DME_C and MXP_MR_10DME_L Cards
The MXP_MR_10DME_C and MXP_MR_10DME_L cards aggregate a mix of client SAN service client inputs (GE, FICON, and Fibre Channel) into one 10.0 Gbps STM-64/OC-192 DWDM signal on the trunk side. It provides one long-reach STM-64/OC-192 port per card and is compliant with Telcordia GR-253-CORE and ITU-T G.957.
The cards support aggregation of the following signal types:
•1-Gigabit Fibre Channel
•2-Gigabit Fibre Channel
•4-Gigabit Fibre Channel
•1-Gigabit Ethernet
•1-Gigabit ISC-Compatible (ISC-1)
•2-Gigabit ISC-Peer (ISC-3)
Note On the card faceplates, the MXP_MR_10DME_C and MXP_MR_10DME_L cards are displayed as 10DME_C and 10DME_L, respectively.
The card can be damaged by dropping it. Handle it safely.
The MXP_MR_10DME_C and MXP_MR_10DME_L muxponders pass all SONET/SDH overhead bytes transparently.
The digital wrapper function (ITU-T G.709 compliant) formats the DWDM wavelength so that it can be used to set up GCCs for data communications, enable FEC, or facilitate PM. The MXP_MR_10DME_C and MXP_MR_10DME_L cards work with the OTN devices defined in ITU-T G.709. The cards support ODU1 to OTU2 multiplexing, an industry standard method for asynchronously mapping a SONET/SDH payload into a digitally wrapped envelope. See the "Multiplexing Function" section.
Note Because the client payload cannot oversubscribe the trunk, a mix of client signals can be accepted, up to a maximum limit of 10 Gbps.
You can install MXP_MR_10DME_C and MXP_MR_10DME_L cards in Slots 1 to 6 and 12 to 17.
Note The MXP_MR_10DME_C and MXP_MR_10DME_L cards are not compatible with the MXP_2.5G_10G card, which does not support transparent termination mode.
The MXP_MR_10DME_C card features a tunable 1550-nm C-band laser on the trunk port. The laser is tunable across 82 wavelengths on the ITU grid with 50-GHz spacing between wavelengths. The MXP_MR_10DME_L features a tunable 1580-nm L-band laser on the trunk port. The laser is tunable across 80 wavelengths on the ITU grid, also with 50-GHz spacing. Each card features four 1310-nm lasers on the client ports and contains five transmit and receive connector pairs (labeled) on the card faceplate. The cards uses dual LC connectors on the trunk side and use SFP modules on the client side for optical cable termination. The SFP pluggable modules are SR or IR and support an LC fiber connector.
Table 8-27 shows the input data rate for each client interface, and the encapsulation method. The current version of the GFP-T G.7041 supports transparent mapping of 8B/10B block-coded protocols, including Gigabit Ethernet, Fibre Channel, ISC, and FICON.
In addition to the GFP mapping, 1-Gbps traffic on Port 1 or 2 of the high-speed SERDES is mapped to an STS-24c channel. If two 1-Gbps client signals are present at Port 1 and Port 2 of the high-speed SERDES, the Port 1 signal is mapped into the first STS-24c channel and the Port 2 signal into the second STS-24c channel. The two channels are then mapped into an OC-48 trunk channel.
There are two FPGAs on each MXP_MR_10DME_C and MXP_MR_10DME_L, and a group of four ports is mapped to each FPGA. Group 1 consists of Ports 1 through 4, and Group 2 consists of Ports 5 through 8. Table 8-28 shows some of the mix and match possibilities on the various client data rates for Ports 1 through 4, and Ports 5 through 8. An X indicates that the data rate is supported in that port.
|
|
|
|
|
|
|
|---|---|---|---|---|---|
1 |
5 |
X |
X |
X |
X |
2 |
6 |
X |
X |
— |
— |
3 |
7 |
X |
X |
X |
— |
4 |
8 |
X |
X |
— |
— |
GFP-T PM is available through RMON and trunk PM is managed according to Telcordia GR-253-CORE and ITU G.783/826. Client PM is achieved through RMON for FC and GE.
A buffer-to-buffer credit management scheme provides FC flow control. With this feature enabled, a port indicates the number of frames that can be sent to it (its buffer credit), before the sender is required to stop transmitting and wait for the receipt of a "ready" indication The MXP_MR_10DME_C and MXP_MR_10DME_L cards support FC credit-based flow control with a buffer-to-buffer credit extension of up to 1600 km (994.1 miles) for 1G FC, up to 800 km (497.1 miles) for 2G FC, or up to 400 km (248.5 miles) for 4G FC. The feature can be enabled or disabled.
The MXP_MR_10DME_C and MXP_MR_10DME_L cards feature a 1550-nm laser for the trunk/line port and a 1310-nm or 850-nm laser (depending on the SFP) for the client ports. The cards contains eight 12.5 degree downward tilt SFP modules for the client interfaces. For optical termination, each SFP uses two LC connectors, which are labeled TX and RX on the faceplate. The trunk port is a dual-LC connector with a 45 degree downward angle.
The throughput of the MXP_MR_10DME_C and MXP_MR_10DME_L cards is affected by the following parameters:
•Distance extension—If distance extension is enabled on the card, it provides more throughput but more latency. If distance extension is disabled on the card, the buffer to buffer credits on the storage switch affects the throughput; higher the buffer to buffer credits higher is the throughput.
Note For each link to operate at the maximum throughput, it requires a minimum number of buffer credits to be available on the devices which the link connects to. The number of buffer credits required is a function of the distance between the storage switch extension ports and the link bandwidth, that is, 1G, 2G, or 4G. These buffer credits are provided by either the storage switch (if distance extension is disabled) or by both the storage switch and the card (if distance extension is enabled).
•Forward Error Correction (FEC)—If Enhanced FEC (E-FEC) is enabled on the trunk port of the card, the throughout is significantly reduced in comparison to standard FEC being set on the trunk port.
Note If distance extension is enabled on the card, the FEC status does not usually affect the throughput of the card.
•Payload size—The throughput of the card decreases with decrease in payload size.
The resultant throughput of the card is usually the combined effect of the above parameters.
8.10.1 Key Features
The MXP_MR_10DME_C and MXP_MR_10DME_L cards have the following high-level features:
•Onboard E-FEC processor: The processor supports both standard RS (specified in ITU-T G.709) and E-FEC, which allows an improved gain on trunk interfaces with a resultant extension of the transmission range on these interfaces. The E-FEC functionality increases the correction capability of the transponder to improve performance, allowing operation at a lower OSNR compared to the standard RS (237,255) correction algorithm. A new BCH algorithm implemented in E-FEC allows recovery of an input BER up to 1E-3.
•Pluggable client interface optic modules: The MXP_MR_10DME_C and MXP_MR_10DME_L cards have modular interfaces. Two types of optics modules can be plugged into the card. These include an OC-48/STM 16 SR-1 interface with a 7-km (4.3-mile) nominal range (for short range and intra-office applications) and an IR-1 interface with a range up to 40 km (24.9 miles). SR-1 is defined in Telcordia GR-253-CORE and in I-16 (ITU-T G.957). IR-1 is defined in Telcordia GR-253-CORE and in S-16-1 (ITU-T G.957).
•Y-cable protection: Supports Y-cable protection between the same card type only, on ports with the same port number and signal rate. See the "Y-Cable Protection" section for more detailed information.
•High level provisioning support: The cards are initially provisioned using Cisco TransportPlanner software. Subsequently, the card can be monitored and provisioned using CTC software.
•ALS: A safety mechanism used in the event of a fiber cut. For details regarding ALS provisioning for the MXP_MR_10DME_C and MXP_MR_10DME_L cards, refer to the Cisco ONS 15454 DWDM Procedure Guide.
•Link monitoring and management: The cards use standard OC-48 OH bytes to monitor and manage incoming interfaces. The cards pass the incoming SDH/SONET data stream and its OH bytes transparently.
•Control of layered SONET/SDH transport overhead: The cards are provisionable to terminate regenerator section overhead. This is used to eliminate forwarding of unneeded layer overhead. It can help reduce the number of alarms and help isolate faults in the network.
•Automatic timing source synchronization: The MXP_MR_10DME_C and MXP_MR_10DME_L cards normally synchronize from the TCC2/TCC2P card. If for some reason, such as maintenance or upgrade activity, the TCC2/TCC2P is not available, the cards automatically synchronize to one of the input client interface clocks.
•Configurable squelching policy: The cards can be configured to squelch the client interface output if there is LOS at the DWDM receiver or if there is a remote fault. In the event of a remote fault, the card manages MS-AIS insertion.
•The cards are tunable across the full C band (MXP_MR_10DME_C) or full L band (MXP_MR_10DME_L), thus eliminating the need to use different versions of each card to provide tunability across specific wavelengths in a band.
•You can provision a string (port name) for each fiber channel/FICON interface on the MXP_MR_10DME_C and MXP_MR_10DME_L cards, which allows the MDS Fabric Manager to create a link association between that SAN port and a SAN port on a Cisco MDS 9000 switch.
8.10.2 Faceplate
Figure 8-23 shows the MXP_MR_10DME_C and MXP_MR_10DME_L faceplates and block diagram.
Figure 8-23 MXP_MR_10DME_C and MXP_MR_10DME_L Faceplates and Block Diagram
For information on safety labels for the cards, see the "Class 1M Laser Product Cards" section.
You must use a 20-dB fiber attenuator (15 to 25 dB) when working with the cards in a loopback on the trunk port. Do not use direct fiber loopbacks with the cards. Using direct fiber loopbacks causes irreparable damage to the MXP_MR_10DME_C and MXP_MR_10DME_L cards.
8.10.3 Wavelength Identification
The card uses trunk lasers that are wavelocked, which allows the trunk transmitter to operate on the ITU grid effectively. Both the MXP_MR_10DME_C and MXP_MR_10DME_L cards implement the UT2 module. The MXP_MR_10DME_C card uses a C-band version of the UT2 and the MXP_MR_10DME_L card uses an L-band version.
Table 8-29 describes the required trunk transmit laser wavelengths for the MXP_MR_10DME_C card. The laser is tunable over 82 wavelengths in the C band at 50-GHz spacing on the ITU grid.
Table 8-30 describes the required trunk transmit laser wavelengths for the MXP_MR_10DME_L card. The laser is fully tunable over 80 wavelengths in the L band at 50-GHz spacing on the ITU grid.
8.10.4 MXP_MR_10DME_C and MXP_MR_10DME_L Card-Level Indicators
Table 8-31 describes the three card-level LEDs on the MXP_MR_10DME_C and MXP_MR_10DME_L cards.
8.10.5 MXP_MR_10DME_C and MXP_MR_10DME_L Port-Level Indicators
Table 8-32 describes the port-level LEDs on the MXP_MR_10DME_C and MXP_MR_10DME_L cards.
8.11 GE_XP and 10GE_XP Cards
The GE_XP and 10GE_XP cards are Gigabit Ethernet (GE) transponders for the ONS 15454 ANSI and ETSI platforms. The cards aggregate Ethernet packets received on the client ports for transport on C-band trunk ports that operate on a 100-GHz-grid. The ports operate with ITU-T G.709 framing and either FEC or E-FEC. The cards are designed for bulk GE point-to-point transport over 10GE LAN PHY wavelengths for Video-on-Demand (VOD), or broadcast video across protected 10GE LAN PHY wavelengths.
The GE_XP and 10GE_XP cards can be installed in Slots 1 through 6 or 12 through 17. The GE_XP is a double-slot card with twenty GE client ports and two 10GE trunk ports. The 10GE_XP is a single-slot card with two 10GE client ports and two 10GE trunk ports. The client ports support SX, LX, and ZX SFPs and SR and 10GBASE LR XFPs. (LR2 XFPs are not supported.) The trunk ports support a DWDM XFP.
A fan-tray assembly (15454E-CC-FTA for the ETSI shelf, or 15454-CC-FTA for the ANSI shelf) must be installed in a shelf where a GE_XP or 10GE_XP card is installed.
GE_XP and 10GE_XP cards can be provisioned to perform different GE transport roles. Both cards can perform as Layer 2 Ethernet switches. However, the 10GE_XP can also perform as a 10GE TXP, and the GE_XP can perform as a 10GE or 20GE MXP. Table 8-33 shows the card modes supported by each card.
Note Changing the GE_XP and 10GE_XP card mode requires the ports to be in a OOS-DSBL (ANSI) or Locked, disabled (ETSI) service state. In addition, no circuits can be provisioned on the cards when the mode is being changed.
GE_XP card uses ethernet statistical multiplexing to aggregate GE traffic over the 10GE interface. In order to demultiplex the stream an additional VLAN tag is added for each client port. This results in reduction in traffic due to 10 ports in full line rate for the 10GE MXP mode. Additional tag is added on client port on the GE to 10GE direction and is removed on the reverse direction. This tag consists of four byte.
For 20GE MXP mode, full traffic cannot be sustained with all 20 ports connected to the trunk.
8.11.1 Key Features
The GE_XP and 10GE_XP cards have the following high-level features:
•GE MXP, TXP, and Layer 2 switch capability over the ONS 15454 DWDM platform.
•Interoperable with TXP_MR_10E and TXP_MR_10E_C cards. Also interoperable with Cisco Catalyst 6500 and Cisco 7600 series GE and 10GE interfaces.
•Compatible with the ONS 15454 ANSI high-density shelf assembly, the ETSI ONS 15454 shelf assembly, and the ETSI ONS 15454 high-density shelf assembly. Compatible with TCC2 and TCC2P cards.
•Ports: The GE_XP has twenty GE client ports and two 10GE trunk ports. The 10GE_XP has two 10GE client ports and two 10GE trunk ports. The client GE signals are mapped into an ITU-T G.709 OTU2 signal using standard ITU-T G.709 multiplexing.
•FEC and E-FEC: ITU-T G.709 framing with standard Reed-Soloman (RS) (255,237) FEC. Performance monitoring and ITU-T G.709 Optical Data Unit (ODU) synchronous and asynchronous mapping. E-FEC with ITU-T G.709 ODU and 2.7 Gbps with greater than 8 dB coding gain.
•Broadcast drop-and-continue capability for VOD and broadcast video applications.
•Layer 2 switch mode provides VLAN translation, QinQ, ingress CoS egress QoS, Fast Ethernet protection switching, and other Layer 2 Ethernet services.
•IEEE 802.3 frame format supported for 10GE interfaces. The minimum frame size is 64 bytes. The maximum frame size is user-provisionable.
•MAC learning capability in Layer 2 switch mode.
•Configurable service provider VLANs (SVLANs) and customer VLANs (CVLANs).
•In Layer 2 switch mode, ports can be provisioned as network-to-network interfaces (NNIs) or user-network interfaces (UNIs) to facilitate service provider to customer traffic management.
•When a port is in UNI mode, tagging can be configured as transparent or selective. In transparent mode, only SVLANs in the node's VLAN database can be configured. In selective mode, a CVLAN- to-SVLAN relationship can be defined.
•Layer 2 VLAN port mapping allows the cards to be configured as multiple GE TXPs and MXPs.
•Protection through Y-cable protection schemes.
•Pluggable client interface optic modules (SFPs and XFPs): Client ports support tri-rate SX, LX, and ZX SFPs, and 10-Gbps SR1 XFPs.
•Pluggable trunk interface optic modules; trunk ports support the DWDM XFP.
8.11.2 Faceplate and Block Diagram
Figure 8-24 shows the GE_XP faceplate and block diagram.
Figure 8-24 GE_XP Faceplates and Block Diagram
Figure 8-25 shows the 10GE_XP faceplate and block diagram.
Figure 8-25 10GE_XP Faceplates and Block Diagram
For information on safety labels for the cards, see the "Class 1M Laser Product Cards" section.
You must use a 20-dB fiber attenuator (15 to 25 dB) when working with the cards in a loopback on the trunk port. Do not use direct fiber loopbacks with the cards. Using direct fiber loopbacks causes irreparable damage to the GE_XP and 10GE_XP cards.
8.11.3 Client Interface
The client interface is implemented with separately orderable SFP or XFP modules. The client interfaces support the following tri-rate SFPs and XFPs using dual LC connectors and multi-mode fiber:
•SFP- GE/1G-FC/2G-FC - 850 nm - MM - LC (PID ONS-SE-G2F-SX)
•SFP - GE/1G-FC/2G-FC 1300 nm - SM - LC (PID ONS-SE-G2F-LX)
•SFP - GE/1G-FC/2G-FC 1300 nm - SM - LC (PID ONS-SE-G2F-ZX)
•SFP - 10/100/1000Base-T - Copper (PID ONS-SE-ZE-EL) Intra office up to 100;
Cable: RJ45 STP CAT5, CAT5E, and CAT6
Note When using the ONS-SE-ZE-EL pluggable port module in the GE_XP card, the maximum throughput is 98.5%.
The client interfaces support the following dual-rate XFP using dual LC connectors and single-mode fiber:
•XFP - OC-192/STM-64/10GE/10-FC/OTU2 - 1310 SR - SM LC (PID: ONS-XC-10G-S1)
Note On GE_XP card, the copper Pluggable Port Module (PPM) interface can auto-negotiate and carry traffic even when the peer interface operates at rates other than 1000 Mbps.
8.11.4 DWDM Trunk Interface
The GE_XP and 10GE_XP cards have two 10GE trunk ports operating at 10GE (10.3125 Gbps) or 10GE into OTU2 (nonstandard 10.0957 Gbps). The ports are compliant with ITU-T G.707, ITU-T G.709, and Telcordia GR-253-CORE standards. The ports are capable of carrying C band and L band wavelengths through insertion of DWDM XFPs. Forty channels are available in the 1550-nm C band 100-GHz ITU grid, and forty channels are available in the L band.
The maximum system reach in filterless applications without the use of optical amplification or regenerators is nominally rated at 23 dB over C-SMF fiber. This rating is not a product specification, but is given for informational purposes. It is subject to change.
8.11.5 Configuration Management
The GE_XP and 10GE_XP cards support the following configuration management parameters:
•Port name—User-assigned text string.
•Admin State/Service State—Administrative and service states to manage and view port status.
•MTU—Provisionable maximum transfer unit (MTU) to set the maximum number of bytes per frames accepted on the port.
•Mode—Provisional port mode, either Autonegotiation or the port speed.
•Flow Control—Flow control according to IEEE 802.1x pause frame specification can be enabled or disabled for TX and RX ports.
•Bandwidth—Provisionable maximum bandwidth allowed for the port.
•Ingress CoS—Assigns a CoS value to the port from 0 (highest) to 7 (lowest) and accepts CoS of incoming frames.
•Egress QoS—Defines the QoS capabilities at the egress port.
•NIM—Defines the port network interface management type based on Metro Ethernet Forum specifications. Ports can be defined as UNI (user-to-network interface) or NNI (network-to-network interface).
•MAC Learning—MAC Address learning to facilitate switch processing.
•VLAN tagging provided according to the IEEE 802.1Q standard.
Note When the GE_XP and 10GE_XP cards are provisioned in a MXP or TXP mode, only the following parameters are available: Port Name, State, MTU, Mode, Flow control, and Bandwidth.
8.11.6 Security
GE_XP and 10GE_XP card ports can be provisioned to block traffic from a user-defined set of MAC addresses. The remaining traffic is normally switched. You can manually specify the set of blocked MAC addresses for each port. Each port of the card can receive traffic from a limited predefined set of MAC addresses. The remaining traffic will be dropped. This capability is a subset of the Cisco IOS "Port Security" feature.
8.11.7 Y-Cable Protection
The GE_XP card supports Y-cable protection when it is provisioned in 10GE or 20GE MXP card mode. The 10GE_XP supports Y-cable protection when it is provisioned in 10GE TXP card mode. Two cards can be joined in a Y-cable protection group with one card assigned as the working card and the other defined as the protection card. This protection mechanism provides redundant bidirectional paths. See the "Y-Cable Protection" section for more detailed information. The Y-protection mechanism is provisionable and can be set ON or OFF (OFF is the default mode). When a signal fault is detected (LOS, LOF, SD, or SF on the DWDM receiver port in the case of ITU-T G.709 mode) the protection mechanism software automatically switches between paths.
8.11.8 Layer 2 Over DWDM Protection
When the GE_XP and 10GE_XP are in Layer 2 (L2) over DWDM card mode, protection is handled by the hardware at the Layer 1 and Layer 2 levels. Fault detection and failure propagation is communicated through the ITU-T G.709 frame overhead bytes. For protected VLANs, traffic is flooded around the 10GE DWDM ring. To set up the Layer 2 protection, you identify a node and the GE_XP or 10GE_XP port that is to serve as the master node and port for the VLAN ring on the card view Provisioning > Protection tab (Figure 8-26). If a failure occurs, the node and port are responsible for opening and closing VLAN loops.
Note The Forced option in the Protection drop-down list converts all the SVLANs to protected SVLANs irrespective of the SVLAN protection configuration in the SVLAN database. This is applicable to a point-to-point linear topology. The SVLAN protection must be forced to move all SVLANs, including protected and unprotected SVLANs, to the protect path irrespective of provisioned SVLAN attributes.
A FAPS switchover happens in the following failure scenarios:
•DWDM line failures caused by a fiber cut
•Unidirectional failure in the DWDM network caused by a fiber cut
•Fiber pull on the master card trunk port followed by a hard reset on the master card
•Hard reset on the master card
•Hard reset on the slave card
•An OTN failure is detected (LOS, OTUK-LOF, OTUK-LOM, or OTUK-LOM on the DWDM receiver port in the case of ITU-T G.709 mode)
•Trunk ports are moved to OOS,DSBLD (Locked,disabled) state
•Improper removal of XFPs
A FAPS switchover does not happen in the following scenarios:
•Slave card trunk port in OOS,DSBLD (Locked,disabled) state followed by a hard reset of the slave card
•OTN alarms raised on the slave card trunk port followed by a hard reset of the slave card
•Dual failure in the VLAN ring caused by fiber pull on the master and slave cards and restoration of a single failure
•Dual failure in the VLAN ring caused by the trunk port of master and slave cards in OOS,DSBLD (Locked,disabled) state and restoration of a single failure by placing one trunk port in IS state
•Dual failure in the VLAN ring due to the trunk port of master and slave cards in OOS,DSBLD (Locked,disabled) state followed by a hard or soft reset of the master card
Figure 8-26 GE_XP and 10GE_XP Layer 2 Over DWDM Provisioning > Protection Tab
8.11.9 GE_XP and 10GE_XP Card-Level Indicators
Table 8-34 describes the three card-level LEDs on the GE_XP and 10GE_XP cards.
8.11.10 GE_XP and 10GE_XP Port-Level Indicators
Table 8-35 describes the port-level LEDs on the GE_XP and 10GE_XP cards.
8.12 ADM-10G Card
The ADM-10G card operates on ONS 15454 SONET, ONS 15454 SDH, and DWDM networks to carry optical signals and Gigabit Ethernet signals over DWDM wavelengths for transport. The card aggregates lower bit-rate client SONET or SDH signals (OC-3/STM-1, OC-12/STM-4, OC-48/STM-16, or Gigabit Ethernet) onto a C-band tunable DWDM trunk operating at a higher OC-192/STM-64 rate. In a DWDM network, the ADM-10G card transports traffic over DWDM by mapping Gigabit Ethernet and SONET or SDH circuits onto the same wavelength with multiple protection options.
The ADM-10G card is a double-slot card that can be installed in Slots 1 through 5 or 12 through 16 in standard and high-density SONET shelves (15454-SA-ANSI or 15454-SA-HD), the ETSI ONS 15454 standard shelf assembly, or the ETSI ONS 15454 high-density shelf assembly. Installation is supported in any of these slots.
Note The recommended slots are 1-2, 3-4, 5-6 and 12-13, 14-15, 16-17.
Fan-tray assembly 15454E-CC-FTA (ETSI shelf)/15454-CC-FTA (ANSI shelf) must be installed in a shelf where the ADM-10G card is installed.
The card is compliant with ITU-T G.825 and ITU-T G.783 for SDH signals. It supports concatenated and nonconcatenated AU-4 mapped STM-1, STM-4, and STM-16 signals as specified in ITU-T G.707. The card also complies with Section 5.6 of Telcordia GR-253-CORE and supports synchronous transport signal (STS) mapped OC-3, OC-12, and OC-48 signals as specified in the standard.
The client SFP and trunk XFP are compliant with interface requirements in Telcordia GR-253-CORE, ITU-T G.957 and/or ITU-T G.959.1, and IEEE 802.3.
8.12.1 Key Features
The ADM-10G card has the following high-level features:
•Two-slot width
•Operates with the TCC2 or TCC2P
•Has built-in OC-192/STM-64 ADM function including client, trunk, and STS cross-connect
•Provides dual-card redundancy in path protection and 1+1 client protection schemes
•Allows creation of ADM peer groups
•Supports SONET, SDH, and Gigabit Ethernet protocols on client SFPs
•Supports XFP DWDM trunk interface single wavelengths
•Supports only double-card configuration.
•Returns zero bit errors when a TCC2 or TCC2P card switches from active to standby or when manual or forced protection switches occur
•16 SFP-based client interfaces (gray, colored, and CWDM optics available)
•Client support for STM1/STM4/STM16/GE client signals (8 Gigabit Ethernet maximum)
•1 XFP-based trunk interface supporting E-FEC/FEC and ITU-T G.709
•2 SR XFP Interlink interfaces supporting redundancy connection with protection board and pass-through traffic
•Frame-mapped generic framing procedure (GFP-F) mapping for Ethernet over SONET or SDH
•Can be installed or pulled from operation, in any slot, without impacting other service cards in the shelf
8.12.2 GFP Interoperability
The ADM-10G card defaults to GFP-F encapsulation that is compliant with ITU-T G.7041. This mode allows the card to operate with ONS 15310-CL, ONS 15310-MA, or ONS 15454 data cards (for example, ONS 15454 CE100T-8 or ML1000-2 cards). GFP encapsulation also allows the ADM-10G card to interoperate with other vendors' Gigabit Ethernet interfaces that adhere to the ITU-T G.7041 standard.
8.12.3 Faceplate
Figure 8-27 shows the ADM-10G card faceplate.
Figure 8-27 ADM-10G Card Faceplate and Block Diagram
8.12.4 Port Configuration Rules
ADM-10G card client and trunk port capacities are shown in Figure 8-28.
Figure 8-28 ADM-10G Card Port Capacities
8.12.5 Client Interfaces
The ADM-10G card uses LC optical port connectors and, as shown in Figure 8-28, supports up to 16 SFPs that can be utilized for OC-N/STM-N traffic. Eight of the SFPs can be used for Gigabit Ethernet. The interfaces can support any mix of OC-3/STM-1, OC-12/STM-4, OC-48/STM-16, or Gigabit Ethernet of any reach, such as SX, LX, ZX, SR, IR, or LR. The interfaces support a capacity of:
•4 x OC-48/STM-16
•16 x OC-12/STM-4
•16 x OC-3/STM-1
•8 x GE
The supported client SFPs are:
•Gray SFPs
–1000Base-SX SFP 850 nm (ONS-SE-G2F-SX=)
–1000Base-LX SFP 1310 nm (ONS-SE-G2F-LX=)
–OC48/STM16 IR1, OC12/STM4 SR1, OC3/STM1 SR1, GE-LX multirate SFP 1310 nm (ONS-SE-Z1=)
–OC3/STM1 IR1, OC12/STM4 IR1 multirate SFP 1310 nm (ONS-SI-622-I1=)
–OC48/STM16 SR1 SFP 1310 nm (ONS-SI-2G-S1=)
–OC48/STM16 IR1 SFP 1310 nm (ONS-SI-2G-I1=)
•Colored DWDM SFPs
–1000Base-ZX SFP 1550 nm (ONS-SI-GE-ZX=)
–OC3/STM1 LR2 SFP 1550 nm (ONS-SI-155-L2=)
–OC48/STM16 LR2 SFP 1550 nm (ONS-SI-2G-L2=)
–OC48/STM16 SFP (ONS-SC-2G-xx.x)
Note xx.x = 28.7 to 60.6. ONS-SC-2G-28.7, ONS-SC-2G-33.4, ONS-SC-2G-41.3, ONS-SC-2G-49.3, and ONS-SC-2G-57.3 are supported from Release 8.5 and later.
•CWDM SFPs
–OC48/STM16/GE CWDM SFP (ONS-SC-Z3-xxxx)
8.12.6 Interlink Interfaces
Two 2R interlink interfaces, called ILK1 and ILK2, are automatically created on each ADM-10G card and placed in the IS/Unlocked service state. Physically cabling these ports between two ADM-10G cards, located on the same shelf, allows you to configure them as an ADM Peer Group.The ILK ports carry 10G of traffic each.
The interlink interfaces support the following STM64 SR1 (ONS-XC-10G-S1=) XFP:
8.12.7 DWDM Trunk Interface
The ADM-10G card supports OC-192/STM-64 signal transport and ITU-T G.709 digital wrapper according to the ITU-T G.709 standard. It supports one DWDM trunk XFP at a time in a double-slot configuration.
The supported DWDM trunk XFPs are:
•10G DWDM (ONS-XC-10G-xx.x=) (colored XFP)
•STM64 SR1 (ONS-XC-10G-S1=) (gray XFP)
8.12.8 Configuration Management
When using OC-48/STM-16 traffic, some contiguous port configurations, listed in Table 8-36, are unavailable due to hardware limitations. This limitation does not impact the Gigabit Ethernet payload.
Note The ADM-10G card cannot be used in the same shelf with SONET or SDH cross-connect cards.
Note The total traffic rate for each trunk cannot exceed OC-192/STM-64 on each ADM-10G card, or for each ADM peer group.
Note Gigabit Ethernet is not supported on Port 9 and Port 10. Port 11 and Port 12 support only OC-3/STM-1 or OC-12/STM-4.
Additionally, the following guidelines apply to the ADM-10G card:
•The trunk port supports OC-192/STM-64 and OTU2.
•The Interlink port supports OC-192/STM-64.
•Up to six ADM-10G cards can be installed in one shelf.
•The card can be used in all 15454-SA-ANSI and 15454-SA-HD shelves as well as ETSI ONS 15454 standard and high-density shelves.
•A lamp test function can be activated from CTC to ensure that all LEDs are functional.
•The card can operate as a working protected or working nonprotected card.
•In a redundant configuration, an active card hardware or software failure triggers a switch to the standby card. This switch is detected within 10 ms and is completed within 50 ms.
•ADM-10G cards support jumbo frames with MTU sizes of 64 to 10,000 bytes; the maximum is 9,216.
•After receiving a link or path failure, the ADM-10G card can shut down only the downstream Gigabit Ethernet port.
Note In ADM-10G cards, the Gigabit Ethernet port does not support flow control.
8.12.9 Security
The ADM-10G card that an SFP or XFP is plugged into implements the Cisco Standard Security Code Check Algorithm that keys on vendor ID and serial number.
If a PPM is plugged into a port on the card but fails the security code check because it is not a Cisco PPM, a minor NON-CISCO-PPM alarm is raised.
If a PPM with a nonqualified product ID is plugged into a port on this card—that is, the PPM passes the security code as a Cisco PPM but it has not been qualified for use on the ADM-10G card, a minor UNQUAL-PPM alarm is raised.
8.12.10 Protection
The ADM-10G card supports 1+1 and SONET path protection and SDH SNCP protection architectures in compliance with Telcordia GR-253-CORE, Telcordia GR-1400-CORE, and ITU-T G.841 specifications.
8.12.10.1 Circuit Protection Schemes
The ADM-10G card supports path protection/SNCP circuits at the STS/VC4 (high order) level and can be configured to switch based on signal degrade calculations.
The card allows open-ended path protection/SNCP configurations incorporating other vendor equipment. In an open-ended path protection/SNCP, you can specify one source point and two possible end points (or two possible source points and one endpoint) and the legs can include other vendor equipment. The source and endpoints are part of the network discovered by CTC.
For detailed information about path protection configurations, SNCPs, and PPMNs, refer to the Cisco ONS 15454 Reference Manual.
8.12.10.2 Port Protection Schemes
For 1+1 optical client port protection, you can configure the system to use any pair of like facility interfaces that are collocated on the same ADM-10G card or on different cards. The 1+1 protection scheme can also work in a unidirectional (unprotected) way or a bidirectional (protected) way. The client port 1-16 can support 1+1 protection scheme when equipped with an OC-N card. The ADM-10G uses the same protection scheme as the OC-N card. For information on optical card protection, refer to Chap 7, Card Protection of the Cisco ONS 15454 Reference Manual.
8.12.11 ADM-10G Card-Level Indicators
Table 8-37 describes the card-level LEDs on the ADM-10G card.
8.12.12 ADM-10G Card Port-Level Indicators
Table 8-38 describes the port-level LEDs on the ADM-10G card.
Note Client or trunk ports can each be in active or standby mode as defined in the related section for each specific protection type. For example, fiber-switched protection has active or standby trunk ports; 1+1 APS protection has active or standby client ports, and client 1+1 protection does not utilize active or standby ports.
8.13 Y-Cable and Splitter Protection
Y-cable and splitter protection are two main forms of card protection that are available for TXP and MXP cards, and for the GE_XP and 10GE_XP cards when they provisioned in TXP or MXP mode. Y-cable protection is provided at the client port level. Splitter protection is provided at the trunk port level.
Note GE_XP and 10GE_XP use VLAN protection when they are provisioned in Layer 2 over DWDM mode. For information, see the "Layer 2 Over DWDM Protection" section. The ADM-10G card uses path protection and 1+1 protection. For more information, see the "Protection" section.
8.13.1 Y-Cable Protection
Y-cable protection is available for the following ONS 15454 TXP, MXP, GE_XP, and 10GE_XP cards:
•TXP_MR_10G
•TXP_MR_10E
•TXP_MR_2.5G
•MXP_2.5G_10G
•MXP_2.5G_10E
•MXP_2.5G_10E_C
•MXP_2.5G_10E_L
•MXP_MR_2.5G
•MXP_MR_10DME_C
•MXP_MR_10DME_L
•GE_XP (when in 10GE or 20GE MXP card mode)
•10GE_XP (when in 10GE TXP card mode)
To create Y-cable protection, you create a Y-cable protection group for two TXP, MXP, GE_XP or 10GE_XP cards using the CTC software, then connect the client ports of the two cards physically with a Y-cable. The single client signal is sent into the RX Y-cable and is split between the two TXP, MXP, GE_XP or 10GE_XP cards. The two TX signals from the client side of the TXP, MXP, GE_XP or 10GE_XP cards are combined in the TX Y-cable into a single client signal. Only the active card signal passes through as the single TX client signal. The other card must have its laser turned off to avoid signal degradation where the Y-cable joins.
When an MXP_MR_2.5G, MXP_MR_10DME_C, or MXP_MR_10DME_L card provisioned with Y-cable protection is used on a storage ISL link (FC1G, FC2G, FC4G, FICON1G, FICON2G, or FICON4G), a protection switchover resets the standby port to active. This reset reinitializes the end-to-end link to avoid any link degradation caused due to loss of buffer credits during switchover. This results in an end-to-end traffic hit of 15 to 20 seconds.
Use the TXP_MR_2.5G card to avoid the 15 to 20 second traffic hit. When a Y-cable protection switchover occurs, the storage ISL link does not reinitialize and results in an end-to-end traffic hit of less than 50ms.
Note Y cable connectors will not work with copper SFPs as Y cable is made up of optical connectors and their is no way to physically connect this to a copper SFP.
Note There is a traffic hit of upto a couple hundred milliseconds on the MXP_MR_2.5G and MXP_MR_10DME cards in Y-cable configuration when a fiber cut or SFP failure occurs on one of the client ports.
Note If you create a GCC on either card of the protect group, the trunk port stays permanently active, regardless of the switch state. When you provision a GCC, you are provisioning unprotected overhead bytes. The GCC is not protected by the protect group.
Figure 8-29 shows the Y-cable signal flow.
Note Loss of Signal-Payload (LOS-P) alarms, also called Incoming Payload Signal Absent alarms, can occur on a split signal if the ports are not in a Y-cable protection group.
Note Removing an SFP from the client ports of a Y-cable protection group card causes an IMPROPRMVL (PPM) alarm. The working port raises the CR,IMPROPRMVL,SA alarm and the protected port raises the MN,IMPROPRMVL,NSA alarm. The severity on the client ports is changed according to the protection switch state.
Figure 8-29 Y-Cable Protection
8.13.2 Splitter Protection
Splitter protection, shown in Figure 8-30, is provided with TXPP and MXPP cards. To implement splitter protection, a client injects a single signal into the client RX port. An optical splitter internal to the card then splits the signal into two separate signals and routes them to the two trunk TX ports. The two signals are transmitted over diverse optical paths. The far-end MXPP or TXPP card uses an optical switch to choose one of the two trunk RX port signals and injects it into the TX client port. When using splitter protection with two MXPP or TXPP cards, there are two different optical signals that flow over diverse paths in each direction. In case of failure. the far-end switch must choose the appropriate signal using its built-in optical switch. The triggers for a protection switch are LOS, LOF, SF, or SD.
Figure 8-30 Splitter Protection
8.14 Far-End Laser Control
The 15454 DWDM cards provide a transparent mode that accurately conveys the client input signal to the far-end client output signal. The client signal is normally carried as payload over the DWDM signals. Certain client signals, however, cannot be conveyed as payload. In particular, client LOS or LOF cannot be carried. Far-end laser control (FELC) is the ability to convey an LOS or LOF from the near-end client input to the far-end client output.
If an LOS is detected on the near-end client input, the near-end trunk sets the appropriate bytes in the OTN overhead of the DWDM line. These bytes are received by the far-end trunk, and cause the far-end client laser to be turned off. When the laser is turned off, it is said to be squelched. If the near-end LOS clears, the near-end trunk clears the appropriate bytes in the OTN overhead, the far-end detects the changed bytes, and the far-end client squelch is removed.
FELC also covers the situation in which the trunk port detects that it has an invalid signal; the client is squelched so as not to propagate the invalid signal.
Payload types with the 2R mode preclude the use of OTN overhead bytes. In 2R mode, an LOS on the client port causes the trunk laser to turn off. The far end detects the LOS on its trunk receiver and squelches the client.
FELC is not provisionable. It is always enabled when the DWDM card is in transparent termination mode. However, FELC signaling to the far-end is only possible when ITU-T G.709 is enabled on both ends of the trunk span.
8.15 Jitter Considerations
Jitter introduced by the SFPs used in the transponders and muxponders must be considered when cascading several cards. With TXP_MR_2.5G, TXPP_MR_2.5G, MXP_MR_2.5G, MXPP_MR_2.5G, and TXP_MR_10E cards, several transponders can be cascaded before the cumulative jitter violates the jitter specification. The recommended limit is 20 cards. With TXP_MR_10G cards, you can also cascade several cards, although the recommended limit is 12 cards. With MXP_2.5G_10G and MXP_2.5G_10E cards, any number of cards can be cascaded as long as the maximum reach between any two is not exceeded. This is because any time the signal is demultiplexed, the jitter is eliminated as a limiting factor.
The maximum reach between one transponder and the other must be halved if a Y cable is used. For more information on Y-cable operation, see the "Y-Cable Protection" section.
8.16 Termination Modes
Transponder and muxponder cards have various SONET and SDH termination modes that can be configured using CTC (see the "Provision Transponder and Muxponder Cards" chapter in the Cisco ONS 15454 DWDM Procedure Guide). The termination modes are summarized in Table 8-39.
|
|
|
|
|---|---|---|
All TXP and MXP cards, with the exception of the MXP_2.5G_10G card (see next section of this table) |
Transparent Termination |
All the bytes of the payload pass transparently through the cards. |
Section Termination |
The SONET transport overhead (TOH) section bytes and the SDH regenerator section overhead (SOH) bytes are terminated. None of these SOH bytes are passed through. They are all regenerated, including the SONET TOH section DCC (SDCC) bytes and the SDH regenerator section DCC (RS-DCC) bytes. In the section termination mode, the SONET TOH line and SDH multiplex section overhead bytes are passed transparently. |
|
Line Termination |
In line termination mode, the section and line overhead bytes for SONET and the overhead bytes for the SDH multiplex and regenerator sections are terminated. None of the overhead bytes are passed through. They are all regenerated, including the SONET SDCC and line DCC (LDCC) bytes and the SDH RS-DCC and multiplexer section DCC (MS-DCC) bytes. |
|
MXP_2.5G_10G1 |
Transparent Termination |
All client bytes pass transparently except the following: B1 is rebuilt, S1 is rewritten, A1 to A2 are regenerated, and H1 to H3 are regenerated. |
Section Termination |
The SONET TOH section bytes and the SDH regenerator section overhead bytes are terminated. None of these section overhead bytes are passed through. They are all regenerated, including the SONET TOH section DCC bytes and the SDH RS-DCC bytes. In the section termination mode, the SONET TOH line and SDH multiplex section overhead bytes are passed transparently. |
|
Line Termination |
In the line termination mode, the section and line overhead bytes for SONET and the overhead bytes for the SDH multiplex and regenerators sections are terminated. None of the overhead bytes are passed through. They are all regenerated, including the SONET SDCC and LDCC bytes and the SDH RS-DCC and MS-DCC bytes. |
1 Clients operating at the OC48/STM16 rate are multiplexed into an OC192/STM64 frame before going to OTN or DWDM. |
For TXP and MXP cards, adhere to the following conditions while DCC termination provisioning:
•For SDCC/RS-DCC provisioning, the card should be in the Section/RS-DCC or Line/MS-DCC termination mode.
•For LDCC/MS-DCC provisioning, the card should be in the Line/MS-DCC termination mode.
For more information on enabling termination modes, see the procedures for changing card setting in the "Provision Transponder and Muxponder Cards" chapter of the Cisco ONS 15454 DWDM Procedure Guide.
8.17 SFP and XFP Modules
SFPs and 10-Gbps SFPs (XFPs) are integrated fiber optic transceivers that provide high-speed serial links from a port or slot to the network. For more information on SFPs/XFPs and for a list of SFPs/XFPs supported by the transponder and muxponder cards, see the Installing the GBIC, SFP, and XFP Optics Modules in Cisco ONS Platforms.
In CTC, SFPs/XFPs are called pluggable port modules (PPMs). To provision SFPs/XFPs and change the line rate for multirate PPMs, see the Cisco ONS 15454 DWDM Procedure Guide.
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