Cisco uBR10012 - Cisco IOS Release 12.2 CY
Available Languages
Table Of Contents
Release Notes for Cisco uBR10012 Universal Broadband Router for Cisco IOS Release 12.2 CY
Cisco uBR10012 Universal Broadband Router
Cisco uBR10012 Router Cable Interface
Determining Your Software Release
Upgrading to a New Software Release
Synchronization of the System Clocks
Upgrading When Using Shared Secret Passwords
Using the show cable modem Command After an HCCP Switchover
Use of the FastEthernet Interface on the PRE1 Module
Avoiding the Dropping of SNMP Traps
Configuring the Routing Protocol Causes a Reset of the Cable Modems
Cable Device, Host, and Modem Commands Not Supported
Limitation on Vendor-Specific Information in the DOCSIS Configuration File
Minimum Revision for the Cisco uBR-LCP Line Card Processor
Redundant PRE1 Modules Are Not Supported Before Release 12.2(4)XF
Web Cache Communication Protocol Is Not Supported
EIGRP, IS-IS, and OSPF Not Supported on Cable Interfaces
Configuring the CMTS Cable Interface When Configuring a CM for Routing Mode
New Hardware Features in Release 12.2(11)CY
Support for the Cisco uBR10-MC5X20S Cable Interface Line Card
New Software Features in Release 12.2(11)CY
PBR support for the Cisco uBR10012
VLAN support for the Cisco uBR10012
Cisco uBR-MC5X20S Cable Interface Line Card
Channel-width and Minislot Size
Gigabit Ethernet Performance Limitations on Small Packets
Downstream Rate-limiting Cannot Be Disabled
N+1 Redundancy and Configuring Static Multicast Groups
Open Caveats—Cisco IOS Release 12.2(11)CY
Resolved Caveats—Cisco IOS Release 12.2(11)CY
Cisco IOS Software Documentation Set
Release 12.2 Documentation Set
Obtaining Technical Assistance
Release Notes for Cisco uBR10012 Universal Broadband Router for Cisco IOS Release 12.2 CY
February 4, 2003
Cisco IOS Release 12.2(11)CY
OL-3623-01 Rev B0
These release notes for the Cisco uBR10012 universal broadband router describe the enhancements provided in Cisco IOS Release 12.2(11)CY. This release is based on Cisco IOS Release 12.2(11)BC1b, which in turn is based on Cisco IOS Release 12.2(11)T. These release notes are updated as needed.
The Cisco IOS Release 12.2(11)BC1b train is an interim release train that provides DOCSIS 1.1 two-way support, along with support for selected new features. Cisco IOS Release 12.2(11)BC1b provides a migration path from the earlier 12.2 XF releases.
For a list of the software caveats that apply to Cisco IOS Release 12.2(11)CY, see the "Caveats" section. See also Caveats for Cisco IOS Release 12.2 T, which is updated for every maintenance release and is located on Cisco.com and the Documentation CD-ROM.
Use these release notes with Cross-Platform Release Notes for Cisco IOS Release 12.2 T located on Cisco.com and the Documentation CD-ROM.
Cisco recommends that you view the field notices for this release to see if your software or hardware platforms are affected. If you have an account on Cisco.com, you can find field notices at http://www.cisco.com/warp/public/tech_tips/index/fn.html. If you do not have a Cisco.com login account, you can find field notices at http://www.cisco.com/warp/customer/tech_tips/index/fn.html.
Note
Cisco IOS Release 12.2(11)CY does not include support for telco-return images.
Contents
These release notes describe the following topics:
•
•
Inheritance Information
Cisco IOS Release 12.2(11)CY is based on Cisco IOS Release 12.2(11)BC1b, an early deployment release, which in turn is based on Cisco IOS Release 12.2(11)T. All features in Cisco IOS Release 12.2(11)BC1b and Cisco IOS Release 12.2(11)T are in Cisco IOS Release 12.2(11)CY.
Table 1 References for the Cross-Platform Release Notes for Cisco IOS Release 12.2 T and Cisco IOS Release 12.2(11)BC1b
•
•
To view information about the topics in the left-hand column, click Cross-Platform System Requirements at: http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/ 122relnt/xprn122t/122treqs.htm
•
•
•
To view information about the topics in the left-hand column.
For Cisco IOS Release 12.2 T, go to:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122relnt/xprn122t/122tnewf.htm
Scroll down and click New Software Features in Cisco IOS Release 12.2(11)T, or MIBs, or Important Notes.
For Cisco IOS Release 12.2(11)BC1b, go to:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122relnt/ubr10000/u10k8bc1.htm
Scroll down and click New and Changed Information, or MIBs, or Important Notes.
•
•
•
To view information about the topics in the left-hand column, go to:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/ 122relnt/xprn122t/122tdocs.htm
Introduction
For information on new features supported by Cisco IOS Release 12.2(11)CY, see the "New and Changed Information" section.
Cisco IOS Release 12.2(11)CY supports the Cisco uBR10012 universal broadband router, which provides a high-capacity, high-throughput cable modem termination system (CMTS), optimized for aggregating traffic at the edge of the cable network. Designed for cable operators and service providers, the platform connects residential subscribers via cable modems, digital set-top boxes, or IP telephony cable modems for high-speed data, broadband entertainment, and IP telephony solutions.
The Cisco uBR10012 router uses the industry-proven Parallel eXpress Forwarding (PXF) technology, derived from the Cisco ESR10000 edge services router, to provide consistent, high-performance throughput, even as software features are added and additional services are deployed.
In addition, it supports a variety of broadband access technologies, including Data-over-Cable Service Interface Specification (DOCSIS), gigabit ethernet, and optical. With support for multiple standards, operators can choose the appropriate services and devices to optimize their capital investment with a single CMTS platform. With access to current and future software enhancements, the Cisco uBR10012 also ensures investment protection as standards and customer needs continue to evolve.
Cable companies and Internet service providers (ISPs) can allocate radio frequency (RF) channel capacity for Internet access or high priority services using a hybrid fiber/coax (HFC) or an all-coax cable plant. Cisco currently provides three router-based DOCSIS CMTS solutions that offer a wider feature set and better manageability than bridge-based systems.
Cisco uBR10012 Universal Broadband Router
The Cisco uBR10012 universal broadband router brings the powerful performance and proven reliability of the industry-leading, DOCSIS-qualified Cisco uBR7200 series universal broadband router product line to the next level of performance, capacity, and throughput. The Cisco uBR10012 platform provides a complete, easy-to-use, integrated router and cable modem termination system (CMTS) package, with feature-rich software and unparalleled customer service and support. With access to current and future software enhancements, the Cisco uBR10012 routers also ensure investment protection as standards evolve.
The Cisco uBR10012 router supports up to eight cable interface line cards for connection to subscriber cable modems (CMs) and set-top boxes (STBs). Cisco IOS Release 12.2(11)CY supports the Cisco uBR-LCP2-MC16S Spectrum Management Card, Cisco uBR-LCP2-MC16C, Cisco uBR-LCP2-MC16E, Cisco uBR-LCP2-MC28C, Cisco uBR-LCP2-MC28C-B, and Cisco uBR10-MC5X20S cable interface line cards.
For connection to the Internet and other networks, the Cisco uBR10012 router supports up to four network uplink line cards, each of which can support connections as fast as 1Gb/s (Gigabit Ethernet). Cisco IOS Release 12.2(11)CY supports OC-12 POS, OC-12/STM-4 SRP, and Gigabit Ethernet connectivity.
Note
Cisco uBR10012 Router Cable Interface
The cable interface in the Cisco uBR10012 router serves as the RF cable TV interface, supporting downstream and upstream signals. The downstream is output as an IF signal suitable for use with an external upconverter. Your cable plant, combined with your planned and installed subscriber base, service offering, and external network connections, determines what combination of Cisco uBR10012 cable interfaces, network uplink line cards, and other components that you should use.
Cisco IOS Release 12.2(11)CY supports the following cable interface line cards, which can be installed in the Cisco uBR10012 chassis in any combination:
•
•
•
•
•
•
Note
All cable interface line cards, except for the Cisco uBR-LCP2-MC16E, support the Data-over-Cable Service Interface Specifications (DOCSIS). DOCSIS supports the 6 MHz North American channel plans using the ITU J.83 Annex B RF standard. The downstream uses a 6 MHz channel width in the 85 to 860 MHz frequency range, and the upstream supports the 5 to 42 MHz frequency range.
The Cisco uBR-LCP2-MC16E cable interface line card supports the European Data-over-Cable Service Interface Specifications (EuroDOCSIS). EuroDOCSIS supports the 8 MHz Phase Alternating Line (PAL) and Systeme Electronique Couleur Avec Memoire (SECAM) channel plans using the ITU J.112 Annex A RF standard. The downstream uses an 8 MHz channel width in the 85 to 860 MHz frequency range, and the upstream supports multiple channel widths in the 5 to 65 MHz frequency range.
Early Deployment Releases
These release notes describe Cisco IOS Release 12.2(11)CY for the Cisco uBR10012 universal broadband router. Cisco IOS Release 12.2(11)CY is an early deployment (ED) release based on Release 12.2 T, which serves as the train's starting point. Early deployment releases contain fixes to software caveats as well as support for new Cisco hardware and software features. Feature support is cumulative from release to release, unless otherwise noted.
Table 2 lists any features supported by the Cisco uBR10012 router in Cisco IOS Release 12.2(11)CY. For complete feature information, see the Cisco uBR10012 Universal Broadband Router Hardware Installation Guide, the Field Replaceable Units (FRUs) documents, and the Cisco uBR10012 Universal Broadband Router Software Configuration Guide.
1 Only major features are listed.
2 MIB = Management Information Base
System Requirements
This section describes the system requirements for Cisco IOS Release 12.2(11)CY and includes the following sections:
•
•
Memory Recommendations
Table 3 displays the memory recommendations of the Cisco IOS feature sets for the Cisco uBR10012 universal broadband router for Cisco IOS Release 12.2(11)CY. Cisco uBR10012 universal broadband routers are available with a 48-MB or 128-MB Type II PCMCIA Flash memory card or 128 MB Flash Disk card.
Supported Hardware
For detailed descriptions of the new hardware features, see the "New and Changed Information" section. Cisco IOS Release 12.2(11)CY supports the following hardware on Cisco uBR10012 routers:
Note
Determining Your Software Release
To determine the version of Cisco IOS software running on the Cisco uBR10012 universal broadband router, log in to the router and enter the show version EXEC command:
Router> show versionCisco Internetwork Operating System SoftwareIOS (tm) 12.2 CY Software (uBR10000-is-mz), Version 12.2(11)CY, RELEASE SOFTWAREUpgrading to a New Software Release
For general information about upgrading to a new software release, see Cisco IOS Upgrade Ordering Instructions located at: http://www.cisco.com/warp/public/cc/pd/iosw/prodlit/957_pp.htm.
Feature Set Tables
The Cisco IOS software is packaged in feature sets consisting of software images—depending on the platform. Each feature set contains a specific set of Cisco IOS features.
Table 5 lists the features and feature sets supported by the Cisco uBR10012 routers in Cisco IOS Release 12.2(11)CY and uses the following conventions:
•
•
Note
Table 5 Feature List by Feature Sets for Cisco uBR10012 Universal Broadband Routers
DOCSIS 1.0 and 1.1 Support
Yes
Yes
DHCP1 Server
Yes
Yes
DRP2 Server Agent
Yes
Yes
IP Enhanced IGRP3 Route Authentication
Yes
Yes
PBR support for Cisco uBR10012
Yes
Yes
VLAN support for Cisco uBR10012
Yes
Yes
Cisco Call History MIB Command Line Interface
Yes
Yes
Cisco IOS Internationalization
Yes
Yes
DOCSIS Ethernet MIB Objects Support (RFC 2665)
Yes
Yes
DOCSIS OSSI4 Objects Support (RFC 2233)
Yes
Yes
DOCSIS 1.1 N+1 Redundancy Support on Cable Interface Line Cards
Yes
Yes
Dynamic Ranging Support
Yes
Yes
Entity MIB, Phase 1
Yes
Yes
Interface Command Enhancements
Yes
Yes
Internal Modem Configuration File Editor
Yes
Yes
MIB Enhancements
Yes
Yes
BPI5 and BPI+ MIB
No
Yes
LinkUp/Down Traps Support (RFC 2233)
Yes
Yes
RF Interface MIB
Yes
Yes
SNMP Cable Modem Remote Query
Yes
Yes
Yes
Yes
Bidirectional PIM8
Yes
Yes
Stub IP Multicast Routing
Yes
Yes
252 Operator Configurable QoS Service Profiles for DOCSIS 1.0
Yes
Yes
Admission Control for Load Balancing
Yes
Yes
Admission Control (Including Weighting Functions per QoS Profile)
Yes
Yes
DOCSIS 1.0 Configuration File Editor (IOS CLI-based)
Yes
Yes
DOCSIS 1.0+9 QoS Enhancements
Yes
Yes
Downstream QoS Handling
Yes
Yes
Downstream Traffic Shaping
Yes
Yes
Dynamic Map-Advance
Yes
Yes
Dynamic Time-of-Day-Based QoS Service Profiles for DOCSIS 1.0
Yes
Yes
Dynamic Upstream Modulation
Yes
Yes
Guaranteed Upstream Minimum Throughput per Modem for DOCSIS 1.0
Yes
Yes
Improved Upstream QoS
Yes
Yes
Multiple SID Support for DOCSIS 1.0+
Yes
Yes
Multiple SID Support for DOCSIS 1.1
Yes
Yes
Multiple SID Support (static only)
Yes
Yes
QoS Configuration
Yes
Yes
QoS Profile Enforcement
Yes
Yes
QoS Profile Management via SNMP, IOS CLI, or Dynamic
Yes
Yes
RTP10 Header Compression
Yes
Yes
Time of Day (ToD) Server
Yes
Yes
TOS Bit Restamping and TOS-based QoS for DOCSIS 1.0
Yes
Yes
Upstream Address Verification
Yes
Yes
Upstream Traffic Shaping
Yes
Yes
Automated Double Authentication
Yes
Yes
BPI and BPI+ Encryption
No
Yes
Cable source-verify
Yes
Yes
Cable source-verify DHCP, Including lease-query
Yes
Yes
Cisco IOS Firewall Enhancements
Yes
Yes
Dynamic Mobile Hosts
Yes
Yes
HTTP11 Security
Yes
Yes
Named Method Lists for AAA12 Authorization & Accounting
Yes
Yes
Per-User Configuration
Yes
Yes
Secure Shell (SSH)
Yes
Yes
SNMP Access Lists, Including Logging Features
Yes
Yes
TACACS+
Yes
Yes
TFTP-enforce
Yes
Yes
MPLS VPN Support for Subinterfaces and Interface Bundles
Yes
Yes
1 DHCP = Dynamic Host Configuration Protocol
2 DRP = Director Response Protocol
3 IGRP = Interior Gateway Routing Protocol
4 OSSI = Operations Support System Interface
5 BPI = Baseline Privacy Interface
6 SNMPv2 = Simple Network Management Protocol version 2
7 SNMPv3 = Simple Network Management Protocol version 3
8 PIM = Protocol Independent Multicast
9 The DOCSIS 1.0+ QoS Enhancements is a set of Cisco's Quality of Service extensions to DOCSIS 1.0 to enable basic VoIP service over the DOCSIS link before DOCSIS 1.1 becomes available. The main enhancements include support for dynamic creation and teardown of flows during voice calls, support for one new unsolicited grant service (UGS) slot scheduling mechanism for voice slots, and per IP-precedence rate shaping on the downstream.
10 RTP = Real-Time Transport Protocol
11 HTTP = Hypertext Transfer Protocol
12 AAA =authentication, authorization, and accounting
Important Notes
The following sections contain important notes about Cisco IOS Release 12.2(11)CY that apply to the Cisco uBR10012 universal broadband router.
Synchronization of the System Clocks
Ensure that the system clocks on the CMTS and on the time-of-day (ToD) servers are synchronized. If this does not occur, the clocks on the CMs will not match the clocks on the CMTS, which could interfere with Baseline Privacy Interface Plus (BPI+) operations. In particular, this could prevent the proper verification of the digital certificates on the CM.
Upgrading When Using Shared Secret Passwords
Cisco IOS Release 12.2 BC changed the encryption algorithm used for the shared-secret command. If you are upgrading from Cisco IOS Release 12.1 EC or Cisco IOS Release 12.0 SC, you cannot cut and paste the "shared-secret" configuration lines that include an encrypted password. Instead, you must re-enter the original shared secret passwords at the CLI prompt.
For example, if the actual shared secret password is "cm-sharedsecret-password," you would enter the cable shared-secret cm-sharedsecret-password command at the CLI prompt. If you have enabled password encryption, the configuration file will then show only the newly encrypted password.
The following example shows a typical configuration session:
Router# config tRouter(config)# service password-encryptionRouter(config)# int c6/0Router(config-if)# cable shared-secret cm-sharedsecret-passwordRouter(config-if)# exitRouter(config)# exitRouter# show running-config | include sharedcable shared-secret 7 0458064B1C294D5C0C1D161211190910673B253B20222D0103Router#
Note
Using the show cable modem Command After an HCCP Switchover
If you are using HCCP 1+1 or N+1 redundancy, the new primary processor after a switchover automatically creates a new database of the online cable modems. This means that the show cable modem ip-address and show cable modem ip-address cnr commands might not show a particular cable modem until the CMTS receives IP traffic from that cable modem.
You can force IP traffic by using the ping ip-address command, and then the show cable modem ip-address and show cable modem ip-address cnr commands will show the cable modem. You can also display any particular cable modem by using the show cable modem | include ip-address command.
Use of the FastEthernet Interface on the PRE1 Module
The FastEthernet interface (interface F0/0/0) on the PRE1 module is intended for network management access and should not be used for WAN connectivity purposes. For WAN connections, use the appropriate network uplink cards, which take full advantage of the system's high-performance PXF processing subsystem.
Note
SNR Algorithm Updated
Since Cisco IOS Release 12.2(4)BC1, the algorithm for calculating the SNR estimate in the show controllers cable upstream command was refined for a more accurate value. The new SNR estimate uses the algorithm as recommended by the chip manufacturer, and depending on plant characteristics, the new SNR value could be up to 6 dB lower than the values shown in earlier software releases.
Note
Avoiding the Dropping of SNMP Traps
When the snmp-server enable traps command is given without any options, it enables all traps, which can generate a significant number of traps at key events, such as system power-up. If the SNMP queue is not large enough to handle all of the traps, new traps will be dropped without notification until the existing traps are sent and slots become available in the queue.
You can do two things to avoid dropping traps in this situation:
•
•
router(config)# snmp-server enable trapsrouter(config)# no snmp-server enable traps syslogConfiguring the Routing Protocol Causes a Reset of the Cable Modems
Be aware that when configuring a routing protocol, the Cisco IOS software must reset the interfaces to enable the change. This normally does not significantly affect operations on the interface, except that when this is done on a cable interface, it causes all cable modems on that particular downstream to reinitialize, potentially interfering with data transmission on that downstream. Therefore you should use routing global configuration commands, such as router rip, on a cable interface only when a minimum of subscribers would be affected.
Cable Device, Host, and Modem Commands Not Supported
The Cisco uBR10012 universal broadband router does not support the following commands:
•
•
•
DOCSIS 1.0 BPI Support
To conform with a recent change in the DOCSIS 1.0 Baseline Privacy Interface (BPI) Specification, Cisco IOS Release 12.2(8)BC1 and later releases require that the Baseline Privacy Configuration Settings Option (Type 17) must be included in the DOCSIS configuration file for all DOCSIS 1.0 cable modems attempting to register for BPI encryption. If the type 17 option is not included, an "Unauthorized SAID" warning will appear in the CMTS console, and the cable modem will not be allowed to come online.
Previous Cisco IOS Releases allowed DOCSIS 1.0 cable modems to register for BPI encryption and to come online, even if the DOCSIS configuration file did not include the type 17 option. The change to the DOCSIS BPI specification, however, made the type 17 option mandatory for BPI operation.
For more information about this requirement, see the TAC technical note on Cisco.com at http://www.cisco.com/warp/public/109/bpi_changes_23895.html.
Limitation on Vendor-Specific Information in the DOCSIS Configuration File
DOCSIS requires that when the cable modem sends its Registration Request (REG-REQ) message to the CMTS, it must include the configuration information found in the DOCSIS configuration file. This configuration information must include all vendor-specific information fields (VSIF). Because MAC-layer management messages, such as REG-REQ, have a maximum data size of 1522 bytes, this limits the amount of VSIF information that can be included in the DOCSIS configuration file.
In particular, the maximum packet size imposes a limit on the number of Cisco IOS CLI commands you can include as VSIF fields in the DOCSIS configuration file. The exact number of commands that will fit depends on the other configuration information included in the file, as well as the length of each command.
If the REG-REQ message is larger than 1522 bytes, the cable modem will likely report errors similar to the following errors that appears on Cisco uBR900 series cable access routers:
%LINK-4-TOOBIG: Interface cable-modem0, Output packet size of 1545 bytes too big%LINEPROTO-5-UPDOWN: Line protocol on Interface cable-modem0, changed state to downIn addition, the CMTS will also report that the cable modem timed out during the registration process. If this occurs, you can try the following steps:
•
•
•
For complete details on what is included in the REG-REQ message, see Chapter 6 of the current DOCSIS 1.1 specification (SP-RFIv1.1-I07-010829 or later).
Minimum Revision for the Cisco uBR-LCP Line Card Processor
The Cisco uBR-LCP line processor card must be at revision 4.4 or greater and be using the boothelper image from Cisco IOS Release 12.2(2)XF1 or later to support the Cisco uBR-MC16C and Cisco uBR-MC16E cable interface line cards.
Redundant PRE1 Modules Are Not Supported Before Release 12.2(4)XF
Cisco IOS Release 12.2(4)XF introduced support for the Route Processor Redundancy (RPR) feature for the Performance Routing Engine (PRE1) cards. This allows two PRE1 modules to be installed in a Cisco uBR10012 chassis for redundant operation.
Earlier releases of software for the Cisco uBR10012 router do not support RPR. In these earlier releases, two PRE1 modules can be installed in a Cisco uBR10012 chassis, but Cisco does not guarantee that upon a failure of the primary PRE1 module, the redundant PRE1 module can automatically bring up all DOCSIS cable interface line cards.
For more information about the RPR feature, see the Route Processor Redundancy (RPR) on the Cisco uBR10012 Universal Broadband Router feature module, available on Cisco.com and the Customer Documentation CD-ROM.
Web Cache Communication Protocol Is Not Supported
The Cisco uBR10012 router does not support the Web Cache Communication Protocol (WCCP) feature set in Cisco IOS Release 12.2(11)CY.
EIGRP, IS-IS, and OSPF Not Supported on Cable Interfaces
The Cisco uBR10012 router supports advanced routing protocols such as Enhanced Interior Gateway Routing Protocol (EIGRP), Intermediate System-to-Intermediate System (IS-IS), and Open Shortest Path First (OSPF) only on the WAN interfaces, not on the cable interfaces. On cable interfaces, use a routing protocol that is supported by the cable modems, such as RIPv2.
Configuring the CMTS Cable Interface When Configuring a CM for Routing Mode
If you have configured a Cisco cable modem for routing mode and are also using the cable-modem dhcp-proxy nat command on the cable modem, you must configure the corresponding cable interface on the Cisco uBR10012 router with the cable dhcp-giaddr policy command. Otherwise, the cable interface could flap and the CM could go offline unpredictably.
Field Notices and Bulletins
•
•
•
New and Changed Information
The following sections list the new hardware and software features supported by the Cisco uBR10012 router for Cisco IOS Release 12.2(11)CY. These sections also show the features inherited from Cisco IOS Release 12.2(2)XF1.
For more information about these features, refer to the documents listed in the "Related Documentation" section.
New Hardware Features in Release 12.2(11)CY
Support for the Cisco uBR10-MC5X20S Cable Interface Line Card
The Cisco uBR10-MC5X20S-F and Cisco uBR10-MC5X20S-D cable interface line cards are a 20 by 16 inch card designed specifically for the Cisco uBR10012 router. The Cisco uBR10-MC5X20S cable interface line card transmits and receives RF signals between the subscriber and the headend over hybrid fiber/coax (HFC) system. It provides the highest port density available in Cisco cable interface line cards.
The Cisco uBR10-MC5X20S cable interface line card is available with either F-connectors or dense (D-) connectors. The F-connectors or D-connectors option provides cable operators the choice of using standard coaxial cable F-connectors or space-saving dense connectors.
The Cisco uBR10-MC5X20S cable interface line card supports downstream and upstream traffic over a Data-Over-Cable Service Interface Specification (DOCSIS)-based cable modem network. The card supports all DOCSIS 1.1-specified Annex B radio frequency (RF) data rates, channel widths, and modulation schemes and has DOCSIS MAC management and spectrum management capabilities.
The Cisco uBR10-MC5X20S cable interface line card supports 6-MHz National Television Systems Committee (NTSC) channel operation, using standard (STD), Harmonic Related Carrier (HRC), or Incremental Related Carrier (IRC) frequency plans conforming to EIA-S542. The card supports downstream channels in the 88 to 860 MHz range, and upstream channels in the 5 to 42 MHz range.
The Cisco uBR10-MC5X20S cable interface line card contains five downstream ports and twenty upstream ports. The downstream ports support 64-QAM and 256-QAM, and the upstream ports support QPSK and 16-QAM modulation.
Each downstream port includes an onboard integrated upconverter that generates an RF signal suitable for connection to a combiner and transmission on the coaxial cable network, without the need for any external upconverters. This can save both the money and rack space required by an external upconverter, as well as reduce the complexity of the equipment at the headend site.
Upstream data from the subscriber, comes through the upstream ports (US0- US19) on the Cisco uBR10-MC5X20 cable interface line card. The line card processes and configures the data and sends it across the backplane to the WAN card and out to the Internet.
Downstream data to the subscriber, comes from the Internet through the WAN card, and across the backplane to the Cisco uBR10-MC5X20 cable interface line card. The Cisco uBR10-MC5X20S card processes and configures the data and sends it out through the appropriate downstream port (DS0 - DS4) to be combined with the rest of the downstream signals in the headend. Each downstream port includes an inboard integrated upconverter.
Table 6 shows the supported DOCSIS modulation schemes.
Restrictions
•
•
–
–
–
•
•
Note
New Software Features in Release 12.2(11)CY
PBR support for the Cisco uBR10012
Policy-Based Routing (PBR) provides a tool for expressing and implementing the forwarding or routing of data packets, on the basis of the policies that are defined by network administrators. PBR allows policy override on routing protocol decisions by selectively applying policies based on access list and/or packet size.
Network administrators can also use PBR to selectively change the IP ToS, IP precedence, and IP QoS Group fields for matching incoming packets on an interface.
The Cisco uBR10012 universal broadband router supports a maximum of 255 PBR policies and 32 route maps within each policy. The following subset of policy-based routing commands is supported in this release of Cisco IOS software:
•
•
•
•
•
•
•
•
•
•
For more information on PBR, refer to the "Configuring Policy-Based Routing" chapter in the Cisco IOS Quality of Service Solutions Configuration Guide, Release 12.2 at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fqos_c/fqcprt1/qcfpbr.htm
VLAN support for the Cisco uBR10012
Cisco IOS IEEE 802.1Q provides support for IEEE 802.1Q encapsulation for Virtual LANs (VLANs). VLANs can be implemented with Cisco IOS platforms in environments where the IEEE 802.1Q encapsulation standard is required. With the introduction of the Cisco IOS IEEE 802.1Q Support feature, Cisco IOS supported 802.1Q VLAN encapsulation, in addition to the currently supported ISL and IEEE 802.10 SDE encapsulations.
Release 12.2(11)CY adds 802.1Q VLAN support for the Cisco uBR10012 universal broadband router. Service providers can use 802.1Q VLANs on gigabit Ethernet interfaces to provide isolation between different content providers' traffic. 802.1Q VLANs may be mapped to MPLS VPN, maintaining traffic separation across an MPLS infrastructure.
For more information, refer to the IEEE 802.1.Q Configuration guide at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/access/mar_3200/mar_conf/m511m80.htm
Refer also to the Cisco IOS IEEE 802.1Q Support guide for command reference information at the following URL:
Limitations and Restrictions
Cisco uBR-MC5X20S Cable Interface Line Card
The Cisco uBR10-MC5X20S card has the following limitations and restrictions:
•
•
•
•
Channel-width and Minislot Size
Cable modems can go offline if you manually change the channel-width on an upstream without also changing the minislot size to the corresponding value. This restriction applies more to DOCSIS 1.0 and older cable modems. See the following examples for the correct channel-width and minislot pairings:
cable upstream 0 channel-width 3200000cable upstream 0 minislot 4cable upstream 0 channel-width 1600000cable upstream 0 minislot 8cable upstream 0 channel-width 800000cable upstream 0 minislot 16cable upstream 0 channel-width 400000cable upstream 0 minislot 32cable upstream 0 channel-width 200000cable upstream 0 minislot 64Gigabit Ethernet Performance Limitations on Small Packets
On the Cisco uBR10012 router, processing small packets (64 bytes or fewer) limits a Gigabit Ethernet interface to approximately 80% of full line rate performance. Full performance is attained when the Gigabit Ethernet interface is processing packets that are 80 bytes or larger.
Frame Relay Not Supported
•
•
Downstream Rate-limiting Cannot Be Disabled
In Cisco IOS Release 12.2(11)CY, you can no longer disable downstream rate-limiting on the Cisco uBR10012 router by using the no cable downstream rate-limit command. You can use the cable downstream rate-limit command to change the rate-limiting on the downstream ports, but you cannot disable downstream rate-limiting entirely.
N+1 Redundancy and Configuring Static Multicast Groups
N+1 Redundancy on the uBR10012 is not supported when you are also configuring static multicast groups with the ip igmp static-group commands. If the static multicast groups are configured along with N+1, the PRE1 module may hang after a switchover. This limitation is described in caveat CSCdy11181.
MIBs
Current MIBs
To obtain lists of supported MIBs by platform and Cisco IOS release, and to download MIB modules, go to the Cisco MIB web site on Cisco.com at http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.
Supported MIBs
The Cisco uBR10012 universal broadband router supports the following categories of MIBs:
•
•
•
•
•
The cable-specific MIBs are described in the following section. For information on the SNMP standard MIBs and Cisco's platform and network-layer enterprise MIBs, see Cisco's MIB web site at http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.
Cable-Specific MIBs
Table 7 shows the cable-specific MIBs that are supported on the Cisco uBR10012 universal broadband router. The table also provides a brief description of each MIB's contents and the Cisco IOS Software Release in which the MIB was initially functional—earlier releases might have had unsupported prototype versions of the MIB; later releases might have added new attributes and functionality. Because of interdependencies, the MIBs must be loaded in the order given in the table.
Note
Note
Table 7 Cable-Specific MIBs Supported on Cisco uBR10012 Routers
SNMPv2-SMI.my
SNMPv2-SMI-V1SMI.my
This module specifies the Structure of Management Information (SMI) for SNMPv2, as defined in RFC1902.
12.2(1)XF1
SNMPv2-TC.my
SNMPv2-TC-V1SMI.my
This module defines the textual conventions as specified in RFC1903.
12.2(1)XF1
SNMPv2-MIB.my
SNMPv2-MIB-V1SMI.my
The management protocol, SNMPv2, provides for the exchange of messages that convey management information between the agents and the management stations, as defined in RFC1907.
12.2(1)XF1
CISCO-SMI.my
CISCO-SMI-V1SMI.my
This module specifies the SMI for Cisco's enterprise MIBs.
12.2(1)XF1
CISCO-TC.my
CISCO-TC-V1SMI.my
This module defines the textual conventions used in Cisco's enterprise MIBs.
12.2(1)XF1
IF-MIB.my
IF-MIB-V1SMI.my
This module describes generic objects for the Layer 3 network interface sublayers. This MIB is an updated version of MIB-II's if table and incorporates the extensions defined in RFC2233.
12.2(1)XF1
DOCS-IF-MIB.my
DOCS-IF-MIB-V1SMI.my
This module describes the DOCSIS-compliant Radio Frequency (RF) interfaces in CMs and the CMTS. This MIB has been released as an RFC2670.
12.2(1)XF1
DOCS-BPI-MIB.my
DOCS-BPI-MIB-V1SMI.my
This module describes the attributes for the DOCSIS 1.0-specified Baseline Privacy Interface (BPI) on cable modems and the CMTS.
12.2(1)XF1
DOCS-BPI-PLUS-MIB.my1
DOCS-BPI-PLUS-MIB-V1SMI.my
This module describes the attributes for the DOCSIS 1.1-specified Baseline Privacy Interface Plus (BPI+) on CMs and the CMTS. This is revision 05 of the MIB.
Note
12.2(1)XF1
CISCO-DOCS-EXT-MIB.my
CISCO-DOCS-EXT-MIB-V1SMI.my
This module extends the DOCSIS standard RFI MIB (DOCS-IF-MIB) with Cisco-specific extensions, such as QoS attributes and connection status and other information regarding the cable modems and CPE devices supported by the CMTS.
12.2(1)XF1
CISCO-CABLE-SPECTRUM-MIB.my
CISCO-CABLE-SPECTRUM-MIB-V1SMI.my
This module describes the spectrum management and flap list attributes.
Note
12.2(2)XF1
DOCS-QOS-MIB.my1
DOCS-QOS-MIB-V1SMI.my
This module describes the quality of service (QoS) attributes. This is revision 04 of the MIB.
12.2(2)XF1
IGMP-MIB (RFC2933)1
This module describes the IGMP protocol attributes, as defined in RFC2933.
12.2(2)XF1
DOCS-IF-EXT-MIB.my1
This is the extension of module of the RFC2670 (DOCS-IF-MIB).
12.2(2)XF1
1 These MIBs are in draft form. They have not yet been finalized by the DOCSIS committee and are subject to change with future releases.
Deprecated MIBs
Old Cisco MIBs will be replaced in a future release. Currently, OLD-CISCO-* MIBs are being converted into more scalable MIBs without affecting existing Cisco IOS products or network management system (NMS) applications. You can update from deprecated MIBs to the replacement MIBs as shown in Table 8.
Note
Note
Caveats
Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats; severity 2 caveats are less serious. Severity 3 caveats are moderate caveats, and only selected severity 3 caveats are included in the caveats document.
All caveats in Cisco IOS Release 12.2 T and Cisco IOS Release 12.2(11)BC1b are also in Cisco IOS Release 12.2(11)CY.
For information on caveats in Cisco IOS Release 12.2 T, see Caveats for Cisco IOS Release 12.2 T. For information on caveats in Cisco IOS Release 12.2(11)BC1b, see Release Notes for Cisco uBR10012 Universal Broadband Router for Cisco IOS Release 12.2 BC. These documents lists severity 1 and severity 2 caveats and only selected severity 3 caveats, and are located on Cisco.com and the Documentation CD-ROM.
Caveat numbers and brief descriptions for Release 12.2(11)CY are listed in this section.
Note
http://www.cisco.com/cgi-bin/Support/Bugtool/launch_bugtool.pl
Open Caveats—Cisco IOS Release 12.2(11)CY
Table 9 documents possible unexpected behavior by Cisco IOS Release 12.2(11)CY and describes only severity 1 and 2 caveats and select severity 3 caveats.
Resolved Caveats—Cisco IOS Release 12.2(11)CY
All the caveats listed in Table 10 are resolved in Cisco IOS Release 12.2(11)CY and describes only severity 1 and 2 caveats and select severity 3 caveats.
Related Documentation
The following sections describe the documentation available for the Cisco uBR10012. These documents consist of hardware and software installation guides, Cisco IOS configuration guides and command references, system error messages, and other documents.
Documentation is available as printed manuals or electronic documents. Use these release notes with these documents:
•
Release-Specific Documents
The following documents are specific to Cisco IOS Release 12.2 and are located on Cisco.com and the Documentation CD-ROM:
•
On Cisco.com at:
Technical Documents: Cisco IOS Software: Cisco IOS Release 12.2: Release Notes: Cross-Platform Release Notes
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.2: Release Notes: Cross-Platform Release Notes
•
Technical Documents
•
As a supplement to the caveats listed in "Caveats" in these release notes, see Caveats for Cisco IOS Release 12.2, which contains caveats applicable to all platforms for all maintenance releases of Cisco IOS Release 12.2.
On Cisco.com at:
Technical Documents: Cisco IOS Software: Cisco IOS Release 12.2: Release Notes: Caveats
On the Documentation CD-ROM at:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.2: Caveats
Note
Platform-Specific Documents
The following related documents are available on Cisco.com and the Documentation CD-ROM:
•
•
•
•
The following documents describe the Cisco uBR-RFSW RF Switch:
•
•
•
Note
On Cisco.com, beginning under the Service & Support heading:
Technical Documents: Broadband/Cable Solutions: Cisco uBR10000 Series Universal Broadband Routers
Note
Technical Documents: Broadband/Cable Solutions
On the Documentation CD-ROM:
Cisco Product Documentation: Broadband/Cable Solutions: Cisco uBR10000 Series Universal Broadband Routers
Note
Tip
http://www.cisco.com/univercd/cc/td/doc/product/cable/ubr10k/index.htm.
Cisco Feature Navigator
Cisco IOS software is packaged in feature sets that are supported on specific platforms. To get updated information regarding platform support for this feature, access Cisco Feature Navigator. Cisco Feature Navigator dynamically updates the list of supported platforms as new platform support is added for the feature.
Cisco Feature Navigator is a web-based tool that enables you to quickly determine which Cisco IOS software images support a specific set of features and which features are supported in a specific Cisco IOS image. You can search by feature or release. Under the release section, you can compare releases side by side to display both the features unique to each software release and the features in common.
To access Cisco Feature Navigator, you must have an account on Cisco.com. If you have forgotten or lost your account information, send a blank e-mail to cco-locksmith@cisco.com. An automatic check will verify that your e-mail address is registered with Cisco.com. If the check is successful, account details with a new random password will be e-mailed to you. Qualified users can establish an account on Cisco.com by following the directions found at this URL:
Cisco Feature Navigator is updated regularly when major Cisco IOS software releases and technology releases occur. For the most current information, go to the Cisco Feature Navigator home page at the following URL:
http://www.cisco.com/cgi-bin/Support/FeatureNav/FN.pl
Cisco IOS Software Documentation Set
The Cisco IOS software documentation set consists of the Cisco IOS configuration guides, Cisco IOS command references, and several other supporting documents. The Cisco IOS software documentation set is shipped with your order in electronic form on the Documentation CD-ROM, unless you specifically ordered the printed versions.
Documentation Modules
Each module in the Cisco IOS documentation set consists of one or more configuration guides and one or more corresponding command references. Chapters in a configuration guide describe protocols, configuration tasks, and Cisco IOS software functionality, and contain comprehensive configuration examples. Chapters in a command reference provide complete command syntax information. Use each configuration guide with its corresponding command reference.
On Cisco.com and the Documentation CD-ROM, two master hot-linked documents provide information for the Cisco IOS software documentation set.
On Cisco.com, beginning under the Service & Support heading:
Technical Documents: Cisco IOS Software Configuration: Cisco IOS Release 12.2: Configuration Guides and Command References
On the Documentation CD-ROM:
Cisco IOS Software Configuration: Cisco IOS Release 12.2: Configuration Guides and Command References
Release 12.2 Documentation Set
Note
On Cisco.com, beginning under the Service & Support heading:
Technical Documents: Cisco IOS Software Configuration: Cisco IOS Release 12.2: Configuration Guides and Command References
On the Documentation CD-ROM:
Cisco Product Documentation: Cisco IOS Software Configuration: Cisco IOS Release 12.2: Configuration Guides and Command References
Note
Obtaining Documentation
The following sections provide sources for obtaining documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at this URL:
Translated documentation is available at this URL:
http://www.cisco.com/public/countries_languages.shtml
Documentation CD-ROM
Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM is updated monthly and may be more current than printed documentation. The CD-ROM package is available as a single unit or as an annual subscription.
Ordering Documentation
You can order Cisco documentation in these ways:
•
http://www.cisco.com/cgi-bin/order/order_root.pl
•
http://www.cisco.com/go/subscription
•
Documentation Feedback
You can submit comments electronically on Cisco.com. In the Cisco Documentation home page, click the Fax or Email option in the "Leave Feedback" section at the bottom of the page.
You can email your comments to bug-doc@cisco.com.
You can submit your comments by mail by using the response card behind the front cover of your document or by writing to the following address:
Cisco Systems
Attn: Document Resource Connection
170 West Tasman Drive
San Jose, CA 95134-9883We appreciate your comments.
Obtaining Technical Assistance
Cisco provides Cisco.com as a starting point for all technical assistance. Customers and partners can obtain online documentation, troubleshooting tips, and sample configurations from online tools by using the Cisco Technical Assistance Center (TAC) Web Site. Cisco.com registered users have complete access to the technical support resources on the Cisco TAC Web Site.
Cisco.com
Cisco.com is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information, networking solutions, services, programs, and resources at any time, from anywhere in the world.
Cisco.com is a highly integrated Internet application and a powerful, easy-to-use tool that provides a broad range of features and services to help you with these tasks:
•
•
•
•
•
If you want to obtain customized information and service, you can self-register on Cisco.com. To access Cisco.com, go to this URL:
Technical Assistance Center
The Cisco Technical Assistance Center (TAC) is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two levels of support are available: the Cisco TAC Web Site and the Cisco TAC Escalation Center.
Cisco TAC inquiries are categorized according to the urgency of the issue:
•
•
•
•
The Cisco TAC resource that you choose is based on the priority of the problem and the conditions of service contracts, when applicable.
Cisco TAC Web Site
You can use the Cisco TAC Web Site to resolve P3 and P4 issues yourself, saving both cost and time. The site provides around-the-clock access to online tools, knowledge bases, and software. To access the Cisco TAC Web Site, go to this URL:
All customers, partners, and resellers who have a valid Cisco service contract have complete access to the technical support resources on the Cisco TAC Web Site. The Cisco TAC Web Site requires a Cisco.com login ID and password. If you have a valid service contract but do not have a login ID or password, go to this URL to register:
http://www.cisco.com/register/
If you are a Cisco.com registered user, and you cannot resolve your technical issues by using the Cisco TAC Web Site, you can open a case online by using the TAC Case Open tool at this URL:
http://www.cisco.com/tac/caseopen
If you have Internet access, we recommend that you open P3 and P4 cases through the Cisco TAC Web Site.
Cisco TAC Escalation Center
The Cisco TAC Escalation Center addresses priority level 1 or priority level 2 issues. These classifications are assigned when severe network degradation significantly impacts business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer automatically opens a case.
To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to this URL:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml
Before calling, please check with your network operations center to determine the level of Cisco support services to which your company is entitled: for example, SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). When you call the center, please have available your service agreement number and your product serial number.
Feedback