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Table Of Contents

Release Notes for Cisco uBR7100 Series
for Cisco IOS Release 12.3 BC

Contents

Introduction

Overview of Cisco Universal Broadband Routers

Cisco uBR7100 Series Universal Broadband Routers

Early Deployment Releases

System Requirements

Memory Recommendations

Supported Hardware

Determining Your Software Release

Upgrading to a New Software Release

DOCSIS System Interoperability on the Cisco uBR7100 Series CMTS

Feature Support

New and Changed Information

No New Hardware Features in Release 12.3(9a)BC

New Software Features for Cisco IOS Release 12.3(9a)BC

Important Notes

New and Changed Command Reference for Cisco IOS Release 12.3(9a)BC

Caveats

Related Documentation

Release-Specific Documents

Platform-Specific Documents

Feature Modules

Cisco Feature Navigator

Cisco IOS Software Documentation Set

Obtaining Documentation

World Wide Web

Documentation CD-ROM

Ordering Documentation

Documentation Feedback

Obtaining Technical Assistance

Cisco.com

Technical Assistance Center

Release Notes for Cisco uBR7100 Series
for Cisco IOS Release 12.3 BC

October 18, 2004

Cisco IOS Release 12.3(9a)BC

OL-6762-01

These release notes for the Cisco uBR7100 series universal broadband routers document the cable-specific, early deployment 12.3 BC train, describing the enhancements and caveats provided in Cisco IOS Release 12.3(9a)BC.

These release notes are updated with each release in the train. For a list of the software caveats that apply to Cisco IOS Release 12.3(9a)BC, see the "Caveats" section and Caveats for Cisco IOS Release 12.3 T. Use these release notes in conjunction with the cross-platform Release Notes for Cisco IOS Release 12.3 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/customer/770/index.shtml. If you do not have a Cisco.com login account, you can find field notices at http://www.cisco.com/warp/public/770/index.shtml.

Contents

These release notes describe the following topics:

• Introduction

• Early Deployment Releases

• System Requirements

• Feature Support

• New and Changed Information

• Important Notes

• Caveats

• Related Documentation

• Obtaining Documentation

• Obtaining Technical Assistance

Introduction

For information on new features and the Cisco IOS documentation set supported by Cisco IOS Release 12.3(9a)BC, see the "New and Changed Information" section and the "Related Documentation" section.

Overview of Cisco Universal Broadband Routers

The Cisco uBR7100 series universal broadband routers—the Cisco uBR7111, Cisco uBR7111E, Cisco uBR7114, and Cisco uBR7114E—are based on the Data-over-Cable Service Interface Specification (DOCSIS) standards and designed to be installed at small cable operators and multiple dwelling unit (MDU) operators to enable them to offer services such as e-mail, high-speed Internet access, voice, and digital video over a bidirectional cable television and IP backbone network. The universal broadband routers function as the cable modem termination system (CMTS) for subscriber-end devices such as Cisco uBR905, Cisco uBR924, and Cisco uBR925 cable access routers, and other DOCSIS-compliant cable modems (CMs) and set-top boxes (STBs).

Both the Cisco uBR7100 series and Cisco uBR7200 series universal broadband routers allow two-way transmission of digital data and Voice over IP (VoIP) traffic over a hybrid fiber-coaxial (HFC) network. The Cisco uBR7100 series routers support IP routing with a wide variety of protocols and WAN interfaces selections.

Cisco IOS Release 12.3(9a)BC supports the Cisco uBR7111, Cisco uBR7111E, Cisco uBR7114, and Cisco uBR7114E universal broadband routers.

Cisco uBR7100 Series Universal Broadband Routers

The Cisco uBR7100 series routers provide a fixed set of WAN and LAN interfaces with a combination of fixed and modular interfaces, allowing both flexibility and simplicity in configuration. Each Cisco uBR7100 series router includes one modular single-width port adapter, one integrated cable interface with an internal upconverter, and two integrated Fast Ethernet ports. The cable interface is based on the Cisco uBR-MC14C cable interface line card and is not field-replaceable.

The Cisco uBR7100 series routers support IP routing through the following optional WAN and LAN port adapters: Ethernet, Fast Ethernet, serial, High-Speed Serial Interface (HSSI), Packet over SONET (POS) OC-3c, and Asynchronous Transfer Mode (ATM) media. For more information, see Table 4.

Depending on the model, the Cisco uBR7100 series routers support the following two standards:

•Data Over Cable Service Interface Specifications (DOCSIS), which 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.

•European Data Over Cable Service Interface Specifications (EuroDOCSIS), which 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.

The Cisco uBR7100 series offers the following models:

•The Cisco uBR7111 and Cisco uBR7111E universal broadband routers provide a cable interface with one downstream port and one upstream port. The downstream port can be output either as an RF signal through the integrated upconverter or as an IF signal for processing by an external upconverter. The Cisco uBR7111 router supports DOCSIS cable plants, and the Cisco uBR7111E supports EuroDOCSIS cable plants.

•The Cisco uBR7114 and Cisco uBR7114E universal broadband routers provide a cable interface with one downstream port and four upstream ports. The downstream port can be output either as an RF signal through the integrated upconverter or as an IF signal for processing by an external upconverter. The Cisco uBR7114 router supports DOCSIS cable plants, and the Cisco uBR7114E supports EuroDOCSIS cable plants.

Cisco uBR7111 and Cisco uBR7111E Universal Broadband Routers

The Cisco uBR7111 and Cisco uBR7111E provide the following major hardware features:

•Integrated network processing engine

•1 upstream cable modem interface

•1 downstream cable modem interface

•2 Fast Ethernet ports

•1 port adapter slot

•1 service adapter slot

•1 AC power supply

•1 Personal Computer Memory Card International Association (PCMCIA) slot that allows for software upgrades through the use of Flash memory cards

Cisco uBR7114 and Cisco uBR7114E Universal Broadband Routers

The Cisco uBR7114 and Cisco uBR7114E provide the following major hardware features:

•Integrated network processing engine

•1 downstream cable modem interface

•4 upstream cable modem interfaces

•2 Fast Ethernet ports

•1 port adapter slot

•1 service adapter slot

•1 AC power supply

•1 Personal Computer Memory Card International Association (PCMCIA) slot that allows for software upgrades through the use of Flash memory cards

Universal Broadband Router Overview

Table 1 provides a quick overview of the major hardware features of the two universal broadband routers.

Table 1 Universal Broadband Router Overview 

Supported Hardware
Cisco uBR7111, Cisco uBR7111E
Cisco uBR7114, Cisco uBR7114E

Upstream Cable Modem Interfaces

1

4

Downstream Cable Modem Interfaces

1

1

Fast Ethernet Ports

2

2

Port Adapter Slots

1

1

Service Adapter Slots

1

1

Power Supplies

1

1

PCMCIA Slots

1

1


Early Deployment Releases

These release notes describe the Cisco uBR7100 series universal broadband routers for Cisco IOS Release 12.3(9a)BC. Feature support is cumulative from release to release, unless otherwise noted.

Table 2 lists any features supported by the Cisco uBR7100 Series routers in Cisco IOS Release 12.3(9a)BC. For complete feature information, refer to these additional resources on Cisco.com:

•Cisco uBR7100 Series Universal Broadband Router Release Notes on Cisco.com:

http://www.cisco.com/univercd/cc/td/doc/product/cable/ubr7100/ub7100rn/index.htm

•Cisco uBR7100 Series Universal Broadband Router Software Configuration Guide

http://www.cisco.com/univercd/cc/td/doc/product/cable/ubr7100/scg7100/index.htm

•Cisco Broadband Cable Command Reference Guide

http://www.cisco.com/univercd/cc/td/doc/product/cable/bbccmref/

Table 2 Early Deployment (ED) Releases for the Cisco uBR7100 Series Routers 

ED Release
Additional Software Features1 and MIBs2
Additional Hardware Features
Hardware
Availability

Cisco IOS Release 12.3(9a)BC

• Cisco Broadband Troubleshooter 3.2

• Cisco IOS Release 12.3(9a)BC Command-Line Interface (CLI) Enhancements

• DOCSIS Set-Top Gateway Issue 1.0

• MIBs Changes and Updates in Cisco IOS Release 12.3(9a)BC

• Subscriber Traffic Management (STM) Version 1.1

•None

Now

1 Only major features are listed.

2 MIB = Management Information Base


System Requirements

This section describes the system requirements for Cisco IOS Release 12.3(9a)BC and includes the following sections:

• Memory Recommendations

• Supported Hardware

• Determining Your Software Release

• Upgrading to a New Software Release

Memory Recommendations

Table 3 displays the memory recommendations of the Cisco IOS feature sets for the Cisco uBR7100 series universal broadband routers for Cisco IOS Release 12.3(9a)BC. Cisco uBR7100 series routers are available with a 16-MB or 20-MB Type II PCMCIA Flash memory card.

Table 3 Memory Recommendations for the Cisco uBR7100 Series Routers,
Cisco IOS Release 12.3(9a)BC Feature Sets 

Feature Set
Software Image
Recommended
Flash Memory
Recommended
DRAM Memory
Runs
From
Two-Way Data/VoIP Images

DOCSIS Two-Way

ubr7100-p-mz

16 MB Flash

128 MB DRAM

RAM

DOCSIS Two-Way IP Plus

ubr7100-is-mz

16 MB Flash

128 MB DRAM

RAM

DOCSIS Two-Way with BPI

ubr7100-k8p-mz

16 MB Flash

128 MB DRAM

RAM

DOCSIS Two-Way IP Plus with BPI

ubr7100-ik8s-mz

16 MB Flash

128 MB DRAM

RAM

Boot Image

UBR7100 Boot Image

ubr7100-boot-mz

None

None

—


The image subset legend for Table 3 is as follows:

•i = IP routing, MPLS-VPN support, and noncable interface bridging, including Network Address Translation (NAT)

•k8 = DOCSIS Baseline Privacy and MPLS-VPN support

•p = IP routing with Intermediate System-to-Intermediate System (IS-IS) and Border Gateway Protocol (BGP); MPLS-VPN support; no NAT

•s = "Plus" features: NAT and Inter-Switch Link (ISL)

Note All images support all of the hardware listed in the "Supported Hardware" section, unless otherwise indicated.

Supported Hardware

Cisco IOS Release 12.3(9a)BC supports the following Cisco uBR7100 series routers:

•Cisco uBR7111

•Cisco uBR7114

•Cisco uBR7111E

•Cisco uBR7114E

Port Adapter Cards

Table 4 lists and describes the port adapters supported by Cisco uBR7100 series routers in Cisco IOS Release 12.3(9a)BC.

Note Table 4 identifies some port adapters for the Cisco uBR7100 series routers that are in an end-of-life (EOL) stage. See the following product bulletin for more details on these EOL port adapters:

http://www.cisco.com/warp/partner/synchronicd/cc/general/bulletin/rt/1438_pp.htm

.

Table 4 Cisco uBR7100 Series Port Adapter Releases 

WAN Technology
Product Number and Description
Introduced in Release1
End-of-Life

Ethernet

 

PA-4E—4-port Ethernet 10BASE-T port adapter

12.2(4)XF1

No

 

PA-8E—8-port Ethernet 10BASE-T port adapter

12.2(4)XF1

Yes

Fast Ethernet

 

PA-FE-TX—1-port 100BASE-TX Fast Ethernet port adapter

12.2(4)XF1

No

 

PA-FE-FX—1-port 100BASE-FX Fast Ethernet port adapter

12.2(4)XF1

No

 

PA-2FE-TX—2-port 100BASE-TX Fast Ethernet port adapter

12.2(4)XF1

No

 

PA-2FE-FX—2-port 100BASE-FX Fast Ethernet port adapter

12.2(4)XF1

No

Serial

 

PA-E3—1-port high-speed serial E3 interface port adapter

12.2(4)XF1

No

 

PA-T3—1-port T3 serial interface port adapter

12.2(4)XF1

No

 

PA-T3+—1-port T3 serial interface port adapter enhanced

12.2(4)BC1

No

 

PA-2E3—2-port high-speed serial E3 interface port adapter

12.2(4)XF1

No

 

PA-2T3—2-port T3 serial interface port adapter

12.2(4)XF1

No

 

PA-2T3+—2-port T3 serial interface port adapter enhanced

12.2(4)BC1

No

 

PA-4T+—4-port synchronous serial port adapter

12.2(4)XF1

No

 

PA-4E1G-75—4-port unbalanced (75-ohm) E1-G.703/G.704 synchronous serial port adapter

12.2(4)XF1

No

 

PA-4E1G-120—4-port balanced (120-ohm) E1-G.703/G.704 synchronous serial port adapter

12.2(4)XF1

No

 

PA-8T-232—8-port EIA/TIA-232 synchronous serial port adapter

12.2(4)XF1

Yes

 

PA-8T-V35—8-port V.35 synchronous serial port adapter

12.2(4)XF1

No

 

PA-8T-X21—8-port X.21 synchronous serial port adapter

12.2(4)XF1

Yes

 

PA-MC-2T1—2-port multichannel DS1 Integrated Services Digital Network (ISDN) Primary Rate Interface (PRI) single-wide port adapter

12.2(4)XF1

Yes

 

PA-MC-4T1—4-port multichannel DS1 ISDN PRI single-wide port adapter

12.2(4)XF1

No

HSSI

 

PA-H—1-port HSSI port adapter

12.2(4)XF1

Yes

PA-2H—2-port HSSI port adapter

12.2(4)XF1

No

ATM

 

PA-A3-E3—1-port E3 ATM, PCI-based, single-width port adapter, that uses an E3 interface with a coaxial cable BNC connector

12.2(8)BC1

No

 

PA-A3-OC3MM—1-port OC-3c ATM, PCI-based multimode port adapter

12.2(4)XF1

No

 

PA-A3-OC3SMI—1-port OC-3c ATM, PCI-based single-mode intermediate reach port adapter

12.2(4)XF1

Yes

 

PA-A3-OC3SML—1-port OC-3c ATM, PCI-based single-mode long reach port adapter

12.2(4)XF1

No

 

PA-A3-8T1/IMA—ATM inverse multiplexer over ATM port adapter with 8 T1 ports

12.2(4)XF1

No

Packet over SONET

PA-POS-OC3SMI—1-port OC3 single-mode, intermediate reach port adapter

12.2(4)XF1

No

1 The number in this column indicates the Cisco IOS release in which the interface was introduced in this train.


Determining Your Software Release

To determine the version of Cisco IOS software running on the Cisco Cisco uBR7100 series universal broadband router, log in to the router and enter the show version EXEC command: 

Router> show version

Cisco Internetwork Operating System Software 

IOS (tm) 12.3 BC Software (ubr7100-k8p-mz), Version 12.3(9a)BC, RELEASE SOFTWARE

Upgrading to a New Software Release

For general information about upgrading to a new software release, see Cisco IOS Upgrade Ordering Instructions located at the following location on Cisco.com:

http://www.cisco.com/warp/public/cc/pd/iosw/prodlit/957_pp.htm

DOCSIS System Interoperability on the Cisco uBR7100 Series CMTS

This section describes the operation of primary interoperability features in the Cisco Cisco uBR7100 series router. For additional DOCSIS information, refer to the following document on Cisco.com:

•DOCSIS 1.1 for the Cisco CMTS

http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/cmtsfg/ufg_docs.htm

DOCSIS 1.0 Baseline Privacy

DOCSIS baseline privacy interface (BPI) gives subscribers data privacy across the RF network, encrypting traffic flows between the CMTS and cable modem. BPI ensures that a cable modem, uniquely identified by its Media Access Control (MAC) address, can obtain keying material for services only it is authorized to access.

To enable BPI, choose software at both the CMTS and cable modem that support this mode of operation. Select a Cisco IOS image that supports BPI. BPI must be enabled using the DOCSIS configuration file.

The cable modem must also support BPI. Cable modems must have factory-installed RSA private/public key pairs to support internal algorithms to generate key pairs prior to first BPI establishment.

Note RSA stands for Rivest, Shamir, and Adelman, inventors of a public-key cryptographic system.

Cable Modem Interoperability

•The Cisco Cisco uBR7100 series router supports DOCSIS-based two-way interoperability for cable modems that support basic Internet access, VoIP, or Virtual Private Networks (VPNs).

•EuroDOCSIS cable modems or set-top boxes (STBs) with integrated EuroDOCSIS CMs using Cisco uBR-MC16E cable interface line cards and Cisco IOS Release 12.2(4)BC1 or higher. EuroDOCSIS operation support includes 8-MHz Phase Alternating Line (PAL) or Systeme Electronique Couleur Avec Memoire (SECAM) channel plans.

Note Cisco IOS Release 12.3(9a)BC does not support telco-return cable modems or STBs.

Configuring the CMTS Cable Interface When in 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 uBR7200 series router with the cable dhcp-giaddr policy command. Otherwise, the cable interface could flap and the CM could go offline unpredictably.

DOCSIS 1.0 and 1.0+ Extensions

Earlier releases of Cisco IOS software for the Cisco uBR7100 series router provide support for the original DOCSIS 1.0 standard, featuring basic best-effort data traffic and Internet access over the coaxial cable network. The DOCSIS 1.0+ extensions provides Quality of Service (QoS) enhancements for real-time traffic, such as voice calls, in anticipation of full DOCSIS 1.1 support.

Note All DOCSIS 1.0 extensions are activated only when a cable modem or Cisco uBR924 that supports these extensions solicits services using dynamic MAC messages or the feature set. If the cable modems in your network are pure DOCSIS 1.0-based, they receive regular DOCSIS 1.0 treatment from the Cisco CMTS.

DOCSIS 1.1 Extensions

The DOCSIS 1.1 specification provides the following functional enhancements over DOCSIS 1.0 coaxial cable networks:

•Enhanced Quality of Service (QoS) gives priority for real-time traffic such as voice and video.

–The DOCSIS 1.0 QoS model (a Service IDs (SID) associated with a QoS profile) has been replaced with a service flow model (SFID). This allows greater flexibility in assigning QoS parameters to different types of traffic and in responding to changing bandwidth conditions.

–Multiple service flows per cable modem supported in either direction due to packet classifiers.

–Support for multiple service flows per cable modem allows a single cable modem to support a combination of data, voice, and video traffic.

–Greater granularity is available in QoS per cable modem (in either direction), using unidirectional service flows.

–Dynamic MAC messages are supported to create, modify, and tear down QoS service flows dynamically when requested by a DOCSIS 1.1 cable modem.

•Several QoS models are supported for the upstream.

–Best effort-Data traffic is sent on a non-guaranteed best-effort basis.

–Committed Information Rate (CIR) supports the guaranteed minimum bandwidth for data traffic.

–Unsolicited Grants (UGS) support constant bit rate (CBR) traffic, such as voice, that is characterized by fixed size packets at fixed intervals.

–Real Time Polling (rtPS) supports Real Time service flows, such as video, that produce unicast, variable size packets at fixed intervals.

–Unsolicited Grants with Activity Detection (USG-AD) support the combination of UGS and RTPS, to accommodate real time traffic that might have periods of inactivity (such as voice using silence suppression). The service flow uses UGS fixed grants while active, but switches to RTPS polling during periods of inactivity to avoid wasting unused bandwidth.

•Enhanced time-slot scheduling mechanisms support guaranteed delay/jitter sensitive traffic on the shared multiple access upstream link.

•Payload Header Suppression (PHS) conserves link-layer bandwidth by suppressing unnecessary packet headers on both upstream and downstream traffic flows.

•Layer 2 fragmentation on the upstream prevents large data packets from affecting real-time traffic, such as voice and video. Large data packets are fragmented and then transmitted in the timeslots that are available between the timeslots used for the real-time traffic.

•Concatenation allows a cable modem to send multiple MAC frames in the same timeslot, as opposed to making an individual grant request for each frame. This avoids wasting upstream bandwidth when sending a number of very small packets, such as TCP acknowledgement packets.

•DOCSIS 1.1 cable modems can coexist with DOCSIS 1.0 and 1.0+ cable modems in the same network—the Cisco uBR7100 series router provides the levels of service that are appropriate for each cable modem.

DOCSIS 1.1 Quality of Service

The DOCSIS 1.1 QoS framework is based on the following objects:

•Service class: A collection of settings maintained by the CMTS that provide a specific QoS service tier to a cable modem that has been assigned a service flow within a particular service class.

•Service flow: a unidirectional sequence of packets receiving a service class on the DOCSIS link.

•Packet classifier: A set of packet header fields used to classify packets onto a service flow to which the classifier belongs.

•PHS rule: A set of packet header fields that are suppressed by the sending entity before transmitting on the link, and are restored by receiving entity after receiving a header-suppressed frame transmission. Payload Header Suppression increases the bandwidth efficiency by removing repeated packet headers before transmission.

In DOCSIS 1.1, the basic unit of QoS is the service flow, which is a unidirectional sequence of packets transported across the RF interface between the cable modem and CMTS. A service flow is characterized by a set of QoS parameters such as latency, jitter, and throughput assurances.

Every cable modem establishes a primary service flow in both the upstream and downstream directions. The primary flows maintain connectivity between the cable modem and CMTS at all times.

In addition, a DOCSIS 1.1 cable modem can establish multiple secondary service flows. The secondary service flows can either be permanently created (they persist until the cable modem is reset or powered off) or they can be created dynamically to meet the needs of the on demand traffic being transmitted.

Each service flow has a set of QoS attributes associated with it. These QoS attributes define a particular class of service and determine characteristics such as the maximum bandwidth for the service flow and the priority of its traffic. The class of service attributes can be inherited from a preconfigured CMTS local service class (class-based flows), or they can be individually specified at the time of the creation of the service flow.

Each service flow has multiple packet classifiers associated with it, which determine the type of application traffic allowed to be sent on that service flow. Each service flow can also have a Payload Header Suppression (PHS) rule associated with it to determine which portion of the packet header will be suppressed when packets are transmitted on the flow.

Feature Support

Cisco IOS software is packaged in feature sets that consist of software images that support specific platforms. The feature sets available for a specific platform depend on which Cisco IOS software images are included in a release. Each feature set contains a specific set of Cisco IOS features.

Caution Cisco IOS images with strong encryption (including, but not limited to 168-bit (3DES) data encryption feature sets) are subject to U.S. government export controls and have limited distribution. Strong encryption images to be installed outside the United States are likely to require an export license. Customer orders may be denied or subject to delay because of U.S. government regulations. When applicable, the purchaser/user must obtain local import and use authorizations for all encryption strengths. Please contact your sales representative or distributor for more information, or send an e-mail to export@cisco.com.

The feature set tables have been removed from the Cisco IOS Release 12.3 release notes to improve the usability of the release notes documentation. The feature-to-image mapping that was provided by the feature set tables is available through Cisco Feature Navigator.

Cisco Feature Navigator is a web-based tool that enables you to 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 by feature set (software image). Under the release section, you can compare Cisco IOS software releases side by side to display both the features unique to each software release and the features that the releases have 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:

http://www.cisco.com/register

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/go/fn

For frequently asked questions about Cisco Feature Navigator, see the FAQs at the following URL:

http://www.cisco.com/support/FeatureNav/FNFAQ.html

Determining Which Software Images (Feature Sets) Support a Specific Feature

To determine which software images (feature sets) in Cisco IOS Release 12.3 support a specific feature, go to the Cisco Feature Navigator home page, enter your Cisco.com login, and perform the following steps:

Step 1 From the Cisco Feature Navigator home page, click Feature.

Step 2 To find a feature, use either "Search by full or partial feature name" or "Browse features in alphabetical order." Either a list of features that match the search criteria or a list of features that begin with the number or letter selected from the ordered list will be displayed in the text box on the left side of the web page.

Step 3 Select a feature from the left text box, and click the Add button to add a feature to the Selected Features text box on the right side of the web page.

Note To learn more about a feature in the list, click the Description button below the left box.

Repeat this step to add additional features. A maximum of 20 features can be chosen for a single search.

Step 4 Click Continue when you are finished selecting features.

Step 5 From the Major Release drop-down menu, choose 12.3.

Step 6 From the Release drop-down menu, choose the appropriate maintenance release.

Step 7 From the Platform Family drop-down menu, select the appropriate hardware platform. The "Your selections are supported by the following:" table will list all the software images (feature sets) that support the feature(s) that you selected.

Determining Which Features Are Supported in a Specific Software Image (Feature Set)

To determine which features are supported in a specific software image (feature set) in Cisco IOS Release 12.3, go to the Cisco Feature Navigator home page, enter your Cisco.com login, and perform the following steps:

Step 1 From the Cisco Feature Navigator home page, click Compare/Release.

Step 2 In the "Find the features in a specific Cisco IOS release, using one of the following methods:" box, choose 12.3 from the Cisco IOS Major Release drop-down menu.

Step 3 Click Continue.

Step 4 From the Release drop-down menu, choose the appropriate maintenance release.

Step 5 From the Platform Family drop-down menu, choose the appropriate hardware platform.

Step 6 From the Feature Set drop-down menu, choose the appropriate feature set. The "Your selections are supported by the following:" table will list all the features that are supported by the feature set (software image) that you selected.

New and Changed Information

The following sections list the new hardware and software features supported by the Cisco uBR7100 series routers for Cisco IOS Release 12.3(9a)BC.

No New Hardware Features in Release 12.3(9a)BC

There are no new hardware features in Cisco IOS Release 12.3(9a)BC.

New Software Features for Cisco IOS Release 12.3(9a)BC

This section describes the following new software features and CLI command changes for Cisco IOS Release 12.3(9a)BC and the Cisco uBR7100 series router:

• Cable ARP Filter Enhancement

• Cisco Broadband Troubleshooter 3.2

• Cisco IOS Release 12.3(9a)BC Command-Line Interface (CLI) Enhancements

• DOCSIS Set-Top Gateway Issue 1.0

• MIBs Changes and Updates in Cisco IOS Release 12.3(9a)BC

• Subscriber Traffic Management (STM) Version 1.1

Cable ARP Filter Enhancement

The cable arp filter command, introduced with Cisco IOS Release 12.2(15)BC2b, enables service providers to filter ARP request and reply packets. This prevents a large volume of such packets from interfering with the other traffic on the cable network.

Cisco IOS Release 12.3(9a)BC introduces enhanced command syntax for the cable arp filter command, where number and window-size values are optional for reply-accept and request-send settings.

To control the number of Address Resolution Protocol (ARP) packets that are allowable for each Service ID (SID) on a cable interface, use the cable arp command in cable interface configuration mode. To stop the filtering of ARP broadcasts for cable modems, use the no form of this command.

cable arp filter {reply-accept number window-size | request-send number window-size}

no cable arp filter {reply-accept | request-send}

default cable arp filter {reply-accept | request-send}

Syntax Description

reply-accept number window-size

Configures the cable interface to accept only the specified number of ARP reply packets every window-size seconds for each active Service ID (SID) on that interface. The cable interface drops ARP reply packets for a SID that would exceed this number.

•number = (Optional) Number of ARP reply packets that is allowed for each SID within the window time period. The allowable range is 0 to 20 packets, with a default of four packets. If number is 0, the cable interface drops all ARP reply packets. If not specified, this value uses default.

•window-size = (Optional) Size of the window time period, in seconds, in which to monitor ARP replies. The valid range is one to five seconds, with a default of two seconds.

request-send number window-size

Configures the cable interface to send only the specified number of ARP request packets every window-size seconds for each active SID on that interface. The cable interface drops ARP requests for a SID that would exceed this number.

•number = (Optional) Number of ARP request packets that is allowed for each SID within the window time period. The allowable range is 0 to 20 packets, with a default of 4 packets. If number is 0, the cable interface does not send any ARP request packets.

•window-size = (Optional) Size of the window time period, in seconds, in which to monitor ARP requests. The valid range is 1 to 5 seconds, with a default of 2 seconds.


Cisco IOS Release 12.3(9a)BC also removes a prior caveat with HCCP Protect interfaces. Previously, in the event of a revert-back HCCP N+1 switchover, manual removal of cable arp filter reply and cable arp filter request configurations may have been required afterward on Protect interfaces.

For more information about ARP Filtering, refer to the following document on Cisco.com:

http://www.cisco.com/en/US/products/hw/cable/ps2217/products_feature_guide09186a00801eefa9.html

Cisco Broadband Troubleshooter 3.2

Cisco IOS Release 12.3(9a)BC introduces support for the Cisco Broadband Troubleshooter (CBT) Version 3.2 on the Cisco uBR7100 series universal broadband router, with newly supported interoperability for the following additional software features:

• Subscriber Traffic Management (STM) Version 1.1

Multiple Service Operators (MSO) provide a variety of services such as TV, video on demand, data, and voice telephony to subscribers. Network Administrators and radio frequency (RF) technicians need specialized tools to resolve RF problems in the MSO's cable plant. Cisco Broadband Troubleshooter 3.2 (CBT 3.2) is a simple, easy-to-use tool designed to accurately recognize and resolve such issues.

The user can select up to three different cable modems (CMs) under the same CMTS or three different upstreams under the same CMTS. In addition, CBT 3.2 introduces the ability to display upstreams and cable modems combined (mixed) on the same trace window for monitoring and for playback.

Note CBT 3.2 resolves the former CBT 3.1 caveat CSCee03388. With CBT 3.1, trace windows did not support the mixing of upstreams or cable modems.

For additional information about CBT 3.2, spectrum management and STM 1.1, refer to the following documents on Cisco.com:

•Release Notes for Cisco Broadband Troubleshooter Release 3.2

http://www.cisco.com/univercd/cc/td/doc/product/cable/trblshtr/cbt32/cbt32rn.htm

•Spectrum Management for the Cisco CMTS

http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/cmtsfg/ufg_spec.htm

•Subscriber Traffic Management for the Cisco CMTS

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122limit/122bc/122bc_15/ubsubmon.htm

Cisco IOS Release 12.3(9a)BC Command-Line Interface (CLI) Enhancements

Cisco IOS Release 12.3(9a)BC introduces or enhances the following CLI commands for the Cisco uBR7100 series router:

• Cable ARP Filter Enhancement

• cable source-verify

• show cable tech-support

• show controllers cable

• show tech-support

For additional information about these command changes, refer to these resources:

• "Obtaining Documentation" section

•Cisco Broadband Cable Command Reference Guide

http://www.cisco.com/univercd/cc/td/doc/product/cable/bbccmref/index.htm

DOCSIS Set-Top Gateway Issue 1.0

Cisco IOS Release 12.3(9a)BC introduces support for DOCSIS Set-Top Gateway (DSG) Issue 1.0 on the Cisco uBR7100 series universal broadband router. The DOCSIS Set-Top Gateway (DSG) feature allows the Cisco CMTS to provide a class of cable services known as out-of-band (OOB) messaging to set-top boxes (STBs) over existing DOCSIS networks. This allows MSOs and other service providers to combine both DOCSIS and STB operations over one, open, vendor-independent network, without any change to the existing network or cable modems.

DSG is a CableLabs® specification that allows the Cisco CMTS to provide a class of cable services known as out-of-band (OOB) messaging to set-top boxes (STBs) over existing Data-over-Cable Service Interface Specifications (DOCSIS) cable networks. DSG 1.0 allows cable Multi-System Operators (MSOs) and other service providers to combine both DOCSIS and STB operations over a single, open and vendor-independent network without requiring any changes to the existing DOCSIS network infrastructure.

At the time of this Cisco publication, the CableLabs® DOCSIS DSG specification is in the current status of "Issued" as characterized by stability, rigorous review in industry and cross-vendor interoperability.

For additional information about configuring and using DSG 1.0 on the Cisco uBR7100 Series routers, refer to the following document on Cisco.com:

•DOCSIS Set-Top Gateway for the Cisco CMTS

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122limit/122bc/122bc_15/ubrdsg.htm

MIBs Changes and Updates in Cisco IOS Release 12.3(9a)BC

Cisco IOS Release 12.3(9a)BC adds the following new MIB support for the Cisco uBR7100 series routers.

• CISCO-CABLE-METERING-MIB

• CISCO-CABLE-QOS-MONITOR MIB

• CISCO-ENHANCED-MEMPOOL-MIB

• CISCO-PROCESS-MIB

• CISCO-CABLE-SPECTRUM-MIB

• DOCS-QOS-MIB

For additional information about Cisco Broadband Cable MIBs for the Cisco CMTS, refer to the following resources on Cisco.com:

•Cisco CMTS Universal Broadband Router MIB Specifications Guide

http://www.cisco.com/univercd/cc/td/doc/product/cable/cmtsmib/

•SNMP Object Navigator

http://www.cisco.com/pcgi-bin/Support/Mibbrowser/unity.pl

CISCO-CABLE-METERING-MIB

Cisco IOS Release 12.3(9) introduces support for the CISCO-CABLE-METERING-MIB on the Cisco uBR7100 series universal broadband routers. The CISCO-CABLE-METERING-MIB contains objects that provide subscriber account and billing information in the Subscriber Account Management Interface Specification (SAMIS) format. This format is specified by the Data-over-Cable Service Interface Specifications (DOCSIS) Operations Support System Interface (OSSI) specification.

The MODULE-IDENTITY for the CISCO-CABLE-METERING-MIB is ciscoCableMeteringMIB, and its top-level OID is 1.3.6.1.4.1.9.9.424 (iso.org.dod.internet.private.enterprises.cisco.ciscoMgmt.ciscoCableMeteringMIB).

This MIB has the following constraints:

•The packet counters displayed by CLI commands are reset to zero whenever the Cisco CMTS router is rebooted.

•The packet counters displayed by SNMP commands are retained across router resets.

•These counters are 64-bit values and could rollover to zero during periods of heavy usage.

For additional SAMIS information, refer to the following resources:

•Usage Based Billing for the Cisco CMTS

http://www.cisco.com/en/US/products/hw/cable/ps2217/products_feature_guide09186a00801ef1d7.html

CISCO-CABLE-QOS-MONITOR MIB

Cisco IOS Release 12.3(9a)BC introduces additional features for the CISCO-CABLE-QOS-MONITOR MIB, including the following:

•Clarified the descriptions of a number of objects.

•Added a number of objects in the ccqmCmtsEnforceRuleTable to support DOCSIS 1.1 and DOCSIS 2.0 cable modems and to support peak and off-peak monitoring.

•Added the ccqmCmtsIfBwUtilTable to provide thresholds for downstream/upstream bandwidth utilization.

•Deprecated and removed ccqmCmtsEnfRuleByteCount.

CISCO-ENHANCED-MEMPOOL-MIB

Cisco IOS Release 12.3(9) introduces support for the CISCO-CABLE-SPECTRUM-MIB on the Cisco uBR7100 series universal broadband routers. The CISCO-ENHANCED-MEMPOOL-MIB enables you to monitor CPU and memory utilization for "intelligent" line cards and broadband processing engines on the Cisco uBR7100 series routers.

CISCO-PROCESS-MIB

Cisco IOS Release 12.3(9) introduces support for the CISCO-PROCESS-MIB on the Cisco uBR7100 series universal broadband routers. The CISCO-PROCESS-MIB enables you to monitor CPU and memory utilization for RF cards, cable interface line cards and broadband processing engines on the Cisco uBR7100 series routers.

CISCO-CABLE-SPECTRUM-MIB

Cisco IOS Release 12.3(9) introduces support for the CISCO-CABLE-SPECTRUM-MIB on the Cisco uBR7100 series universal broadband routers, with these additional MIB object enhancements:

•ccsFlapListMaxSize and ccsFlapListCurrentSize SNMP objects provide additional description for cable flap lists.

•Added the ccsCmFlapTable to replace the ccsFlapTable. The new object uses downstream, upstream and Mac as indices to replace the ccsFlapTable object.

•The enhanced ccsSNRRequestTable object provides a table of SNR requests with modified description.

•Added the ccsUpSpecMgmtUpperBoundFreq object to assist with spectrum management on the Cisco CMTS.

•Added the ccsCompliance5 object object.

•Added ccsCmFlapResetNow to reset the flap list for a particular cable modem.

•Updated the descriptions for ccsFlapListMaxSize, ccsFlapListCurrentSize, and ccsSNRRequestTable.

The following objects are also now deprecated:

•ccsFlapPowerAdjustThreshold

•ccsFlapMissThreshold

•ccsFlapResetAll

•ccsFlapClearAll

•ccsFlapLastClearTime

The maximum number of entries in the flap-list was changed from a maximum of 8191 for the entire router, to the following:

•8191 entries for each Broadband Processing Engine (BPE) cable interface, such as the Cisco uBR-MC16U/X, Cisco uBR-MC28U/X, and Cisco uBR-MC5X20S/U.

•8191 maximum flap-list entries for all non-BPE cable interfaces, such as the Cisco uBR-MC16C, Cisco uBR-MC16S, and Cisco uBR-MC28C.

Two objects are now used to track the flap list size:

•ccsFlapListMaxSize—Reflects the flap list size, as configured by the cable flap-list size command.

•ccsFlapListCurrentSize—Reflects the current size of the flap list for each MAC domain (downstream).

DOCS-QOS-MIB

Cisco IOS Release 12.3(9) introduces additional MIB object enhancements for the DOCS-QOS-MIB on the Cisco uBR7100 series universal broadband routers:

•Updated with the DOCSIS operations support system interface (OSSI) v2.0-N-04.0139-2.

•The default values of docsQosPktClassIpSourceMask and docsQosPktClassIpDestMask objects are set to 0xFFFFFFFF.

DSG-IF-MIB

The DSG-IF-MIB defines objects that are used to configure, control, and monitor the operation of the DOCSIS Set-top Gateway (DSG) 1.0 feature on Cisco uBR10012, Cisco uBR7246VXR and Cisco uBR7100 series routers.

Note The MODULE-IDENTITY for the DSG-IF-MIB is dsgIfMib, and its top-level OID is 1.3.6.1.4.1.9.9.999 (iso.org.dod.internet.private.enterprises.cisco.ciscoMgmt.dsgIfMib). Because this is an experimental MIB, its top-level OID is expected to change when the DSG specifications are finalized.

MIB Constraints

The DSG-IF-MIB has the following constraints:

•This is an experimental MIB that can be obsoleted and replaced without prior notice, when the DSG specification is finalized.

•This MIB is supported only in Cisco IOS Release 12.3(9a)BC and later releases. It is not supported for the version of DSG that was implemented in Cisco IOS Release 12.2(15)BC1.

•This MIB is not supported in Cisco IOS Release 12.1 EC.

•This MIB is not supported on Cisco uBR7100 routers.

Subscriber Traffic Management (STM) Version 1.1

Cisco IOS Release 12.3(9a)BC introduces support for Subscriber Traffic Management (STM) through Version 1.1 on the Cisco uBR7100 series universal broadband routers. STM 1.1 supports DOCSIS 1.1-compliant cable modems.

The STM feature enables service providers to identify and control subscribers who exceed the maximum bandwidth allowed under their registered quality of service (QoS) profiles. STM 1.1 works with Network-Based Application Recognition (NBAR) and Access control lists (ACLs) to ensure full network performance to other network subscribers that abide by their service agreements. STM 1.1 also works in conjunction with the Cisco Broadband Troubleshooter 3.2 to support additional network management and troubleshooting functions in the Cisco CMTS.

STM 1.1 extends earlier STM functions to monitor a subscriber's traffic on DOCSIS 1.1 primary service flows and supports these additional features:

•Cisco Broadband Troubleshooter (CBT) 3.2 supports STM 1.1.

•DOCSIS 1.0-compliant and DOCSIS 1.1-compliant cable modem are supported.

•Monitoring and application of traffic management policies are applied on a service-flow basis.

•Monitoring window duration increased from seven to 30 days.

For additional information about STM 1.1 and Cisco CBT 3.2, refer to the following document on Cisco.com:

•Subscriber Traffic Management for the Cisco CMTS

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122limit/122bc/122bc_15/ubsubmon.htm

•Release Notes for Cisco Broadband Troubleshooter Release 3.2

http://www.cisco.com/univercd/cc/td/doc/product/cable/trblshtr/cbt32/cbt32rn.htm

Important Notes

The following sections contain important notes about Cisco IOS Release 12.3(9a)BC that apply to Cisco uBR7100 series universal broadband routers.

New and Changed Command Reference for Cisco IOS Release 12.3(9a)BC

Cisco IOS Release 12.3(9a)BC introduces or enhances the following Cisco IOS commands for the Cisco uBR7100 series universal broadband routers:

• cable source-verify

• show cable tech-support

• show controllers cable

• show tech-support

cable source-verify

To enable verification of IP addresses or service IDs (SIDs) for CMs and CPE devices on the upstream, use the cable source-verify command in global configuration, cable interface configuration or subinterface configuration modes. To disable verification, use the no form of this command.

Cable Interface and Subinterface Configuration Modes

cable source-verify [dhcp | leasetimer value | leasequery-filter upstream query-num interval]

no cable source-verify

Global Configuration Mode

cable source-verify leasequery-filter downstream query-num interval

no cable source-verify

Syntax Description

dhcp

(Optional) Specifies that queries will be sent to verify unknown source IP addresses in upstream data packets.

Note Do not enable the local DHCP server on the Cisco CMTS and configure local DHCP address pools, using the ip dhcp pool command, when using this option, because this prevents DHCP address validation.

leasetimer value

(Optional) Specifies the time, in minutes, for how often the router should check its internal CPE database for IP addresses whose lease times have expired. The valid range for value is 1 to 240 minutes, with a default of 60 minutes.

Note The leasetimer option takes effect only when the dhcp option is also used on an interface. Also, this option is supported only on the master interface and cannot be configured on subinterfaces. Configuring it for a master interface automatically applies it to all subinterfaces.

leasequery-filter upstream query-num interval

(Optional) Enables upstream lease queries to be defined on a per-SID basis to reduce the chance of Denial of Service attacks.

•query-num—

•interval—

leasequery-filter downstream query-num interval

(Optional) Enables downstream lease queries to be defined on a per-SID basis to reduce the chance of Denial of Service attacks.

•query-num—

•interval—


Defaults

Disabled. When the dhcp option is specified, the leasetimer option is set by default to 60 minutes.

Command Modes

Global configuration, Cable interface configuration or subinterface configuration

Note Configuring the cable source-verify command on the master interface of a bundle will configure it for all of the slave interfaces in the bundle as well.

Command History

Release
Modification

11.3 XA

This command was introduced.

12.0(7)T

The dhcp keyword was added.

12.0(10)SC, 12.1(2)EC

Support was added for these trains.

12.1(3a)EC

Subinterface support was added.

12.1(13)EC, 12.2(11)BC1

The leasetimer keyword was added.

12.2(15)BC1

The verification of CPE devices was changed when using the dhcp keyword.

12.2(15)BC2

Support for verifying CMs and CPE devices that are on a different subnet than the cable interface was enhanced to use Reverse Path Forwarding (RFP).

12.3(9a)BC

In order to protect the Cisco CMTS from denial of service attacks, Cisco IOS Release 12.3(9a)BC adds the option of using a per SID basis for deriving lease queries from CPE devices. This release also introduces a global rate limit for lease queries initiated by downstream traffic. These enhancements reduce the CPU utilization of DHCP Receive and ISR processes when the Cisco CMTS is configured with the cable source-verify dhcp and no cable arp commands.


For additional information about this and other commands, refer to the following document on Cisco.com:

•Cisco Broadband Cable Command Reference Guide

http://www.cisco.com/univercd/cc/td/doc/product/cable/bbccmref/index.htm

show cable tech-support

Cisco IOS Release 12.3(9a)BC introduces changes to the output of the show cable tech-support command. This change allows users with large numbers of online cable modems to collect the necessary information without consuming the console session for a long period of time.

To display general information about the router when reporting a problem, use the show cable tech-support command in privileged EXEC mode.

show cable tech-support [cable slot/port | cable slot/subslot/port]

Syntax Description

cable slot/port

(Optional) Displays information only for the specified cable interface on the Cisco uBR7100 series and Cisco uBR7200 series routers.

On the Cisco uBR7100 series router, the only valid value is 1/0. On the Cisco uBR7200 series router, slot can range from 3 to 6, and port can be 0 or 1, depending on the cable interface.

cable slot/subslot/port

(Optional) Displays information only for the specified cable interface on the Cisco uBR10012 router. The following are the valid values:

•slot = 5 to 8

•subslot = 0 or 1

•port = 0 to 4 (depending on the cable interface)


Syntax Description

This command has no arguments or keywords.

Defaults

No default behavior or values

Command Modes

Privileged EXEC

Command History

Release
Modification

11.2

This command was introduced.

12.1(1a)T1

This command was modified to include information about the cable clock card.

12.2(15)BC2

This command added several show pxf commands to the display on the Cisco uBR10012 router.

12.3(9a)BC

The output of the command was significantly shortened by moving a number of show commands (the ones that display information about individual cable modems) to the show tech-support command. Also, added support for an option to display information about only one specific cable interface.


Examples

The following example illustrates the cable modem and interface information for the Cisco uBR7100 series router on which Cisco IOS Release 12.3(9a)BC is installed. 

Router# show