New line card with 12 SFP Ports Enables Higher Port Density and Multirate Capability per Slot on the Cisco ONS 15454 Multiservice Provisioning Platform
The Cisco® ONS 15454 Multiservice Provisioning Platform (MSPP) provides an excellent foundation to build a next-generation transport network. By incorporating innovative features such as integrated Layer 1 and Layer 2 data over SONET/SDH, storage over SONET/SDH, and TDM over SONET/SDH, the Cisco ONS 15454 MSPP can be deployed in a wide variety of networks.
This document describes the benefits and applications of the Cisco ONS 15454 12-Port SFP-Based Multirate Optics Card (MRC-12 Card). The MRC-12 card is supported on the ONS 15454 SONET and SDH platforms.
Background
The MRC-12 card provides 12 SFP ports to support OC-3/STM-1, OC-12/STM-4, and OC-48/STM-16. It works on any slot with all current Cisco cross-connect cards (excluding the discontinued cross-connect card). The MRC-12 is an industry-leading card with per-port support for OC-3 through OC-48 and is scalable up to 2.5 Gbps or 10 Gbps per high-speed slot or 622 Mbps or 2.5 Gbps per low-speed slot with an XCVT/10G cross-connect. The MRC-12 helps enable new applications such as OC-3 Long Reach 2 (LR2), CWDM, I-temp OC-48, and any-slot OC-48 ITU, while minimizing initial first cost and optimizing optical densities on the Cisco ONS 15454.
SFP-Based Optics Card
The MRC-12 card has flexible, high-density service support. It has up to 4 OC-48/STM-16, 12 OC-12/STM-4, 12 OC-3/STM-1, or a combination up to the maximum slot bandwidth. There are some port-configuration limitations that must be taken into consideration to achieve maximum slot bandwidth utilization. The MRC-12 card opens up valuable shelf slots for other services (data, storage area network [SAN], TDM, etc.). The SFP optics with LC connectors provides flexibility to support various line rates, optical reach, CWDM, or DWDM. In-service optical span upgrades are available from fixed optics cards or on-card SFP rate changes. The MRC-12 is compatible with XC-VT, XC-10G, XC-VXL, or XC-VXC cross-connects. Protection switching is errorless on the XC/TCC side (with XC-VXC). The MRC-12 is per-port STM-m/OC-n provisionable (SONET/SDH). It is Industrial Temperature Qualified through 2.5 Gbps (the commercial temperature for CWDM and DWDM) SFP Optics.
System Focus on Service Cost Reduction
Figure 1. Cost Reduction Scenario
The MRC-12 card includes the following characteristics:
• Shelves - The MRC-12 is supported in the low-density ANSI Cisco 15454 backplane/shelf, the high-density ANSI Cisco 15454 backplane/shelf, and in the ETSI backplane/shelf.
• Supported configurations (shelf slots supported in all I/O slots):
– Drop slots 1-4 and 14-17
– Trunk slots 5, 6, 12, and 13
• Network protection options - The MRC-12 card can be provisioned for operation with SONET and SDH protection options such as unidirectional-path switched ring (UPSR), subnetwork connection protection (SNCP), path-protected mesh network (PPMN), 2-fiber or 4-fiber bidirectional line switched ring or multiplex section-shared protection ring (MS-SPR), 1+1 automatic protection switching (APS) or multiplexed switching protection (MSP), and unprotected.
• Cross-connect cards - The MRC-12 card supports the XC-VT, XC-10G, XC-VXL, and XC-VXC.
• Timing, Communications, and Control cards - The MRC-12 card requires the Cisco ONS 15454 Timing, Communications, and Control 2 Card (TCC2) or TCC2-Plus (TCC2P) Card to support the MRC-12 card's 12 ports of data communications channel (DCC) capacity.
• MRC-12 faceplate - The MRC-12 card includes two faceplate cutouts for 6-port SFP cages. Port numbers are provided next to each SFP port along with TX and RX LC connector designators. Boxed SFP port numbers indicate the higher-rate capable ports. Per-port LED indicators (Red, Green, and Amber) are located on the left side of each SFP port.
• SFP optical transceivers - Digital diagnostics allow the Cisco Transport Controller to provide optical performance monitoring. Optical performance monitoring is only supported for Cisco qualified SFP. Cisco Magic Key and the qualified vendor part number must match the software table for qualified SFP. Unqualified SFP will be allowed to pass traffic, but MEA will be asserted and digital diagnostic capabilities (if present) will not be available through Cisco Transport Controller.
• Loopbacks - Facility (line) and terminal (system) side loopbacks are accessible and provisionable through Cisco Transport Controller. These loopbacks are done on a per-SFP-port basis. The MRC-12 card supports a data path loopback for test, debug, built-in self-test (BIST), and diagnostics. The MRC-12 card provides the capability to generate and monitor an STS-1/STS-3C/STS-12C/STS-48C payload with PRBS23, PRBS31, or fixed 16-bit data patterns. All are compatible with the Agilent OmniBer 718. The MRC-12 card also supports a pseudo facility loopback (pointer processed), a terminal loopback, and a backplane loopback. SONET/SDH-compliant facility loopback is provided through the use of cross-point switches between the SFP ports and ASIC.
• Environmental and Compliance:
– I-Temp (-40 to 65°C, ambient)
– Low heat dissipation
– Main Board: 28 Watts (W) maximum
– SFP optics
OC-3 < 1W
OC-12 < 1W
OC-48 < 1W
OC-3/OC-12 CWDM < 1.2W (E-Temp only [-5 to 65°C, ambient])
OC-48 DWDM < 1.25W (C-Temp only [-5 to 50°C, ambient])
– GR1089, Issue 3 (2005) EMI/ESD Compliant
• Element management - supported by a proven element management system, Cisco Transport Manager.
Figure 2. Cisco ONS 15454 12-Port SFP-Based Multirate Optics Card
Port Configuration
All 12 ports on the MRC-12 card are divided into four groups. Port group 1 includes port 1 only; group 2 includes ports 2, 3, and 4; group 3 includes ports 5, 6, 7, and 8; and group 4 includes ports 9, 10, 11, and 12. In each port group, there is a primary port that can take the whole bandwidth allocated to its group, and secondary ports whose bandwidth cannot exceed that of the primary port. Port 1, 4, 7, and 10 are primary ports in their port group and all the other ports are secondary ports. Port 1 may take the whole bandwidth of a card if the card's bandwidth does not exceed OC-48/STM-16.
Figures 3-5 show three different port grouping scenarios.
Figure 3. Scenario 1: The maximum bandwidth of the backplane for the slot is STS12. The card is installed in a drop slot (slots 1-4 and 14-17) with XC-VT.
Group 1
Group 2
Group 3
Group 4
Port
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
Port Mode
Primary
Secondary
Secondary
Primary
Secondary
Secondary
Primary
Secondary
Secondary
Primary
Secondary
Secondary
Port Rate
3
3
3
3
12
Figure 4. Scenario 2: The maximum bandwidth of the backplane for the slot is STS48. The card is installed in a trunk slot with XC-VT. The card is installed in a drop slot with XC-10G and XC-VXC-10G. The card is installed in a drop slot with XC-VXL-10G. The card is installed in any slot with XC-VXL-2.5G and VX-VXC-2.5G.
Group 1
Group 2
Group 3
Group 4
Port
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
Port Mode
Primary
Secondary
Secondary
Primary
Secondary
Secondary
Primary
Secondary
Secondary
Primary
Secondary
Secondary
Port Rate
3/12
3
3
3
3
3
3
3
3
3
3
3
3/12
12
3
3
3
3
3
3
3
3
3/12
3
3
3
12
3
3
3
3
3/12
12
12
3
3
3
3
3/12
3
3
3
3
3
3
3
12
3/12
12
3
3
3
3
12
3/12
3
3
3
12
12
3/12
12
12
12
48
Figure 5. Scenario 3: The maximum bandwidth of the backplane for the slot is STS192. The card is installed in a trunk slot with XC-10G and XC-VXC-10G. The card is installed in a trunk slot with XC-VXL-10G.
Group 1
Group 2
Group 3
Group 4
Port
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Port 9
Port 10
Port 11
Port 12
Port Mode
Primary
Secondary
Secondary
Primary
Secondary
Secondary
Primary
Secondary
Secondary
Primary
Secondary
Secondary
Port Rate
3/12/48
3/12
3/12
3/12
3/12
3/12
3/12
3/12
3/12
3/12
3/12
3/12
3/12/48
48
3/12
3/12
3/12
3/12
3/12
3/12
3/12
3/12
3/12/48
3/12
3/12
3/12
48
3/12
3/12
3/12
3/12
3/12/48
48
48
3/12
3/12
3/12
3/12
3/12/48
3/12
3/12
3/12
3/12
3/12
3/12
3/12
48
3/12/48
48
3/12
3/12
3/12
3/12
48
3/12/48
3/12
3/12
3/12
48
48
3/12/48
48
48
48
Protection
The MRC-12 card supports the following protection types:
• 1+1 protection type only between the same equipment types (MRC-12 to MRC-12)
• 1+1 protection type only on the same port number and same port rate
• 1+1 protection type only when both cards in the protection group are in the same type of slots (low- or high-speed slots)
• 4-fiber BLSR/MS-SPRs when OC-48/STM-16 SFP optics are used
• 2-fiber BLSR/MS-SPRs when OC-12/STM-4 or OC-48/STM-16 SFP optics are used
Card Upgrade
The MRC-12 card supports card upgrades from 1-port OC-12/STM-4 and 1-port OC-48/STM-16.
Port Upgrade
The user can change the rate of the facility on an SFP port already inserted into the system by following the Change Port Rate Procedure. Physically changing the SFP port is not required. The user can replace one SFP port with another by following the Span Upgrade Procedure. This is possible only on those SFP ports provisioned with DCC turned on.
Backplane Upgrade
The MRC-12 card supports backplane bandwidth upgrade, such as an upgrade from XC-VT to XC-10G. All traffic is recovered afterwards.
The user can provision a High threshold value and Low threshold value for Transmit Optical Power, Receive Optical Power, and Laser Bias Current to trigger threshold-crossing alarms. The LO-TXPOWER/HI-TXPOWER alarm (MN) can be raised when the Transmit Optical Power for optical ports meets, falls below, or exceeds the lower or upper threshold. The LO-RXPOWER/HI-RXPOWER alarm (MN) can be raised when the Receive Optical Power for optical ports meets, falls below, or exceeds the lower or upper threshold. The LO-LASERBIAS/HI-LASERBIAS alarm (MN) can be raised when the Laser Bias Current for optical ports meets, falls below, or exceeds the lower or upper threshold.
J0 Section Trace
The MRC-12 card supports reception and transmission of 64-byte, 16-byte, and 1-byte J0 section trace identifier. The MRC-12 card supports both manual and automatic mode. It also supports configurable AIS/RDI generation for TIM-S defect. J0 section trace can be turned on or off.
Errorless Switching
When the TCC2 switches from active to standby, all circuits cross-connected to this module will exhibit zero bit errors. The module supports the errorless cross-connect switch when equipped cross-connect cards have errorless switch capability, such as XC-VXC-10G.
Far-End Intermediate Path Performance Monitoring
Intermediate path performance monitoring (IPPM) counts for SONET include the Far-End counts: CV-PFE, ES-PFE, SES-PFE, UAS-PFE, and FC-PFE and comply with GR-253, section 6.2.2.5.
IPPM counts for SDH include the following Far-End counts: HP-EB, HP-ES, HP-SES, HP-UAS, HP-BBE, HP-ESR, HP-SESR, HP-BBER, and HP-FC and comply with G.828.
Application Examples
A Cisco ONS 15454 MSPP equipped with an MRC-12 card provides application solutions for both service provider and enterprise customers, including the following:
Example 1: Multiservice Aggregation and Transport System
The high-port-density and multi-reach support of the MRC-12 card requires fewer cards to perform the same function as multiple fixed-rate or fixed-reach cards.
The Cisco ONS 15454 shelf slots that are freed-up by the MRC-12 card can be used for additional revenue-generating services, such as Fibre Channel, 10/100/1000 Mbps Ethernet, or additional TDM.
Figure 6. MRC-12 Card Frees-Up Cisco ONS 15454 Shelf Slots
Example 2: Network Consolidation Node
Reducing network complexity and lowering capital expenditures is an important theme indicated by the marketplace. The high-port-density and multi-reach support via pluggable optics modules help users to consolidate network elements as well as simplify operations by reducing inter-network element cabling. Figure 7 shows a simplified, traditional service provider network collecting and transporting traffic. Figure 8 shows the same network using the high-density MRC-12 card.
Figure 7. Typical Network Design
Figure 8. Network Consolidation Design with MRC-12 Cards
