Cisco uBR7200 Series Software Configuration Guide - Chapter 1: Overview of Cisco uBR7200 Series Software [Cisco uBR7200 Series Universal Broadband Routers]

Table Of Contents

Overview of Cisco uBR7200 Series Software

Cisco IOS Releases and Images for the Cisco uBR7200 Series

Determining Your Cisco IOS Software Release

Upgrading to a New Software Release

12.3 BC Release Train Images and Requirements

12.2 BC Release Train Images and Requirements

12.2 CX Images and Requirements

12.1 EC Images and Requirements

Cisco uBR7200 Series Chassis Overview

Cisco uBR7200 Series Universal Broadband Routers

Cisco uBR7246 VXR Universal Broadband Router

Cisco uBR7246 Universal Broadband Router

Cisco uBR7223 Universal Broadband Router

Supported Hardware on the Cisco uBR7200 Series

Network Processing Engines

I/O Controllers

Network Interface Port Adapters

Cable Interface Line Cards

System Interoperability

Cable Modem Interoperability

Clock Synchronization

Cisco uBR7200 Series Router Configuration Overview

Port Adapter and Line Card Slot and Logical Interface Numbering

MAC-Layer Addressing

Cable Interface Line Cards

Cable Interface Line Card Slots

Interfaces and Physical Ports

Port Adapter Slots

Supported Software Features for the Cisco uBR7200 Series

Cisco uBR7200 Series Router Features and Cisco IOS Releases

Cisco uBR7200 Series Router Configuration Tools

Autoinstall

Cable Interface Setup Facility

Cable Interface Extended Setup Facility

Cisco Network Registrar

Interface Range Specification

Internal Modem Configuration File Editor

Manual Configuration Mode for the Cisco uBR7200 Series CMTS

Virtual Interface Support and Frequency Stacking Support

Bandwidth Management Features

Load Balancing Support

Cisco IOS Command-Line Enhancements

exec prompt timestamp Command

parser cache Command

show Command Enhancements

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

Cisco Quality of Service Features

Cisco Network-Based Application Recognition (NBAR)

RTP Header Compression

DHCP Servers and Feature Support

Configurable Leasequery Server

DHCP MAC Address Exclusion List for cable-source verify dhcp Command

DOCSIS 1.0 Feature Support

DOCSIS 1.0 Baseline Privacy

DOCSIS 1.0 Baseline Privacy Interface Encryption and Encrypted Key Exchange

DOCSIS 1.0 Concatenation Override Featurette

DOCSIS 1.0 Extensions

DOCSIS 1.0 Quality of Service

DOCSIS Quality of Service Enhancements Prior to DOCSIS 1.1

DOCSIS 1.0 ToS Overwrite

DOCSIS Customer Premises Equipment Configurator

Enhanced Rate Bandwidth Allocation (ERBA) Support for DOCSIS 1.0 Cable Modems

DOCSIS 1.0+ Feature Support

Concatenation for DOCSIS 1.0+

Dynamic MAC messages

Multiple SIDs per Cable Modem

Separate Downstream Rates

Unsolicited Grant Service (CBR-scheduling) on the Upstream

DOCSIS 1.1 Feature Support

Baseline Privacy Interface Plus (BPI+)

Burst Profile Configuration

Cable Modulation Profile Default Templates

DHCP Cable Modem Host ID

DHCP Client ID/Remote ID Options

DHCP, Time of Day (ToD) and TFTP Servers

DOCSIS 1.1 Quality of Service Features

DOCSIS 1.1 Two-way Transmission (Cisco uBR7246VXR Router)

Downstream Channel ID

Downstream Frequency Override

Downstream Packet Classifier

Downstream Packet Scheduler

Downstream Rate Shaping with IP Type of Service Bits

Optional Upstream Scheduler Modes

DOCSIS 2.0 Feature Support

DOCSIS 2.0 A-TDMA Support

High Availability Features

Cisco DDC (Dual DOCSIS Channel)

DRP Server Agent

DSX Messages and Synchronized PHS Information

Globally Configured HCCP 4+1 Redundancy on the Cisco uBR7246VXR Router

HCCP Support for the Cisco uBR-MC16S Cable Interface Line Card

HCCP N+1 Redundancy

High Availability Features in Cisco IOS Release 12.3(13a)BC

High Availability Support for Encrypted IP Multicast

Hot-Standby 1+1 Redundancy

IF Muting for HCCP N+1 Redundancy

Intercept Features

Access Control List Support for COPS Intercept

Cable Monitor Enhancements

COPS TCP Support for the Cisco Cable Modem Termination System

cops ip dscp

cops tcp window-size

Service Independent Intercept (SII) Support on the Cisco uBR7200 Series

IP Broadcast and Multicast Features

Multicast QoS Support on the Cisco uBR7246VXR CMTS

IP Routing Features

Cable ARP Filter Enhancement

cable intercept Command

Cable Interface Bundling and Cable Subinterfaces

Configurable Alternate Termination System Information Messages

Easy IP (Phase 1)

Fast-Switched Policy Routing

IP Enhanced IGRP Route Authentication

IP Network Address Translation/Port Address Translation

NAT—Support for NetMeeting Directory (Internet Locator Service—ILS)

Router-Port Group Management Protocol

Supported Protocols on the Cisco uBR7200 Series

Management Features

Admission Control for the Cisco CMTS

Cable ARP and Proxy ARP

cable map-advance Command Enhancements

cable monitor Command

Cisco IOS Internationalization

DOCSIS 2.0 SAMIS ECR Data Set

Downstream Load Balancing Distribution with Upstream Load Balancing

Dynamic Channel Change (DCC) for Loadbalancing

Dynamic Ranging Support

Enhanced Modem Status Display

Entity MIB, Phase 1

Load Balancing for the Cisco CMTS

Management Information Base (MIB) Changes and Enhancements

MAX-CPE Override for Cable Modems

Per-Modem Error Counter Enhancements

Pre-equalization Control for Cable Modems

Subscriber Traffic Management (STM) Version 1.1

Usage Based Billing (SAMIS)

Multicast Features

Bidirectional PIM

DOCSIS Set-top Gateway (DSG) 1.0

Advanced-mode DOCSIS Set-Top Gateway Issue 1.1

Advanced-mode DOCSIS Set-Top Gateway Issue 1.2

IGMP Version 3

IP Multicast Load Splitting across Equal-Cost Paths

IP Multicast over ATM Point-to-Multipoint Virtual Circuits

IP Multicast over Token Ring LANs

Source Specific Multicast

Stub IP Multicast Routing

PacketCable and Voice Support Features

PacketCable 1.0 With CALEA

Security Features

Access Control Lists

Automated Double Authentication

Cable Modem and Multicast Authentication Using RADIUS

Cable Source Verification (cable source-verify Command)

Cisco IOS Firewall Feature Set

Cisco IOS Firewall Feature Enhancements

Dynamic Mobile Hosts

Dynamic Shared Secret for DOCSIS

Dynamic Shared Secret (DMIC) with OUI Exclusion for DOCSIS

HTTP Security

Named Method Lists for AAA Authorization & Accounting

Per-Modem Filters (Per-Modem and Per-Host Access Lists)

Per-User Configuration

Redirect-Number Support for RADIUS and TACACS+ Servers

Reflexive Access Lists

Secure Shell (SSH) Supported in "k1" Images for Cisco uBR7200

Turbo Access Control Lists

Vendor-Proprietary RADIUS Attributes

SNMP Features and Enhancements

Individual SNMP Trap Support

LinkUp/Down Traps Support (RFC 2233)

SNMPv2C

SNMPv3

SNMP Cable Modem Remote Query

SNMP Management Information Base (MIB) Enhancements

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

SNMP Warm Start Trap

Spectrum Management and Advanced Spectrum Management Features

Advanced Spectrum Management

Cable Modulation Profile Default Templates

Downstream Traffic Shaping

Dynamic Upstream Modulation

Guided and Scheduled Spectrum Management

Input Power Levels

Spectrum Management Enhancements in Cisco IOS Release 12.3(9a)BC

Upstream Traffic Shaping

Testing, Troubleshooting and Diagnostic Features

Cable Downstream Frequency Override

Cable Flap List

Cisco Broadband Troubleshooter (CBT) 3.2

Cisco CMTS Static CPE Override

Fast Fault Detection

Virtual Interfaces

Virtual Interface Bundling on the Cisco uBR-MC28/U BPE

VLAN Features

HSRP over ISL in Virtual LAN Configurations

VPN and Layer 2 Tunneling Features

Dynamic SID/VRF Mapping Support

IP Type-of-Service and Precedence for GRE Tunnels

IPv6 over L2VPN

Mapping Service Flows to MPLS-VPN

MPLS VPN Support for Subinterfaces and Cable Interface Bundles

Overlapping Subinterface IP Addresses

Transparent LAN Services (TLS) and L2 Tunneling ATM/SIDs

Transparent LAN Services (TLS) and L2 Virtual Private Networks

WAN Optimization and Services Features

Bandwidth Allocation Control Protocol (BACP)

Closed User Group Selection Facility Suppress Option

Enhanced Local Management Interface (ELMI)

Frame Relay Enhancements

Frame Relay MIB Extensions

Frame Relay Router ForeSight

ISDN Advice of Charge

ISDN Caller ID Callback

ISDN Multiple Switch Types

ISDN NFAS

Microsoft Point-to-Point Compression (MPPC)

MLPPP Support

National ISDN Switch Types for BRI and PRI

PAD Subaddressing

PPPoE Termination Support on Cable Interfaces

VPDN MIB and Syslog Facility

X.25 Enhancements

X.25 Switching Between PVCs and SVCs

DOCSIS and CMTS Interoperability

DOCSIS NTSC Cable Plants

EuroDOCSIS Cable Plants

DOCSIS-Compliant Downstream Signals

DOCSIS-Compliant Upstream Signals

Traffic Engineering

Overview of Cisco uBR7200 Series Software

The Cisco uBR7200 series uses Cisco IOS® software to offer enhanced stability, features, performance and investment protection. This chapter summarizes system and software features of the Cisco uBR7200 series Cable Modem Termination System (CMTS). This chapter contains the following sections:

Section

Purpose

"Cisco IOS Releases and Images for the Cisco uBR7200 Series," page 2

Describes the supported Cisco IOS release trains, associated features, and latest Cisco IOS images for each recently supported train.

One early step in CMTS feature configuration is to verify your Cisco IOS release train, the associated image and feature set. This section guides you in determining such information.

"Cisco uBR7200 Series Chassis Overview," page 8

Describes the Cisco uBR7200 series routers, and their supported hardware features and interoperability.

"Cisco uBR7200 Series Router Configuration Overview," page 15

Provides an overview of the hardware and interfaces that typically require configuration through Cisco IOS software.

"Supported Software Features for the Cisco uBR7200 Series," page 22

Describes the features and configuration utilities that are available on the Cisco uBR7200 series.

"DOCSIS and CMTS Interoperability," page 137

Provides an overview of DOCSIS NTSC and EuroDOCSIS cable plants, DOCSIS-compliant signals, and traffic engineering.

Cisco IOS Releases and Images for the Cisco uBR7200 Series

This section describes the supported releases, latest images, memory requirements, and major software features for the following Cisco IOS software:

•Determining Your Cisco IOS Software Release

•Upgrading to a New Software Release

•12.3 BC Release Train Images and Requirements

•12.2 BC Release Train Images and Requirements

•12.2 CX Images and Requirements

•12.1 EC Images and Requirements

To configure the CMTS for the first time, refer to Chapter 2, "Configuring the Cable Modem Termination System for the First Time."

For additional release information, refer to the Cisco uBR7200 Series Software Release Notes on Cisco.com:

http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/ub7200rn/index.htm

Determining Your Cisco IOS Software Release

To determine the version of Cisco IOS software running on the Cisco uBR7200 series universal broadband router, log in to the router and enter the show version command in User or privileged EXEC mode.
Router> show version
Cisco Internetwork Operating System Software 
IOS (tm) Cisco IOS 12.2 BC Software (ubr7200-is-mz), Version Cisco IOS Release 12.2(4)BC1, 
RELEASE SOFTWARE
Note Your display may vary according to your release and image.

Upgrading to a New Software Release

An upgrade is an order placed for a Cisco IOS feature set that contains more functionality than the feature set that you are replacing. An upgrade is not an "update." An update consists of installing a more recent version of the same feature set.

•Exception—If a feature set has been made obsolete, the next closest feature set on a more recent release is considered an update.

For general information about upgrading to a new software release, refer to the Cisco IOS Upgrade Ordering Instructions on Cisco.com. Also refer to Appendix A, "Installing or Upgrading Cisco IOS Software."

12.3 BC Release Train Images and Requirements

The Cisco 12.3 BC release train is the latest Cisco IOS release train to support the Cisco uBR7200 Series, and emphasizes additional features and performance specifically for the Cisco uBR7246VXR universal broadband router.

Table 1-2 displays the memory recommendations of the Cisco IOS feature sets for the Cisco uBR7200 series universal broadband routers for Cisco IOS Release 12.3(9a)BC. Cisco uBR7200 series routers are only available with a 48 MB or 128 MB of Flash disk memory on the I/O Controller cards. The UBR7200-NPE-G1 uses compact Flash disk only.

Note Flash disks, an alternative to linear Flash memory, are Flash memory-based devices that can be used as file storage media in the PCMCIA card slots of the I/O Controllers. Each I/O Controller has two PCMCIA slots and can be configured with up to 256 MB of Flash disk memory.

Table 1 Memory Recommendations for the Cisco uBR7200 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

ubr7200-p-mz

32 MB Flash

256 MB DRAM

RAM

DOCSIS Two-Way IP Plus

ubr7200-is-mz

32 MB Flash

256 MB DRAM

RAM

DOCSIS Two-Way with BPI

ubr7200-k8p-mz

32 MB Flash

256 MB DRAM

RAM

DOCSIS Two-Way IP Plus with BPI

ubr7200-ik8s-mz

32 MB Flash

256 MB DRAM

RAM

DOCSIS Two-Way 3DES

ubr7200-k9p-mz

32 MB Flash

256 MB DRAM

RAM

DOCSIS Two-Way 3DES IP Plus

ubr7200-ik9s-mz

32 MB Flash

256 MB DRAM

RAM

Boot Image

UBR7200 Boot Image

ubr7200-kboot-mz

None

None

—

UBR7200 Boot Image

ubr7200-boot-mz

None

None

—

The image subset legend for Table 1-2 is as follows:

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

•k8 = DOCSIS Baseline Privacy

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

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

•k9 = 3DES level of encryption

Note All images support all of the hardware listed in the "Supported Hardware on the Cisco uBR7200 Series" section, unless otherwise indicated.

Note A Cisco uBR7200 series router requires 256 MB of DRAM memory on the NPE processor card when HCCP redundancy is configured and the router is supporting more than 3,000 cable modems. Using less memory in these conditions results in temporary out-of-memory situations and incomplete synchronization between the Working and Protect interfaces.

12.2 BC Release Train Images and Requirements

Note Cisco IOS release 12.2(4)BC1 offers certified DOCSIS 1.1 support on the Cisco uBR7246 VXR router.

The 12.2 BC train is an interim release train that provides certified DOCSIS 1.1 two-way support on the Cisco uBR7246 VXR universal broadband router, along with support for selected new features. The latest release in this train, Cisco IOS Release 12.2(4)BC1, provides a migration path from the earlier Cisco IOS 12.2 XF releases, which included a subset of the features supported in these Cisco IOS release trains:

•Cisco IOS Release 12.0 SC

•Cisco IOS Release 12.1 EC

•Cisco IOS Release 12.1 CX1

Table 1-2 displays the memory recommendations of the Cisco IOS feature sets for the Cisco uBR7200 series universal broadband routers for Cisco IOS Release 12.2(15)BC1 and 12.2(15)BC2a. Cisco uBR7200 series routers are available with 48 MB or 128 MB of Flash disk memory on the I/O Controller cards. The UBR7200-NPE-G1 uses compact Flash disk only.

Note Flash disks, an alternative to linear Flash memory, are Flash memory-based devices that can be used as file storage media in the PCMCIA card slots of the I/O Controllers. Each I/O Controller has two PCMCIA slots and can be configured with up to 256 MB of Flash disk memory.

Note Cisco IOS release 12.2(4)BC1and later BC releases offer certified DOCSIS 1.1 support on the Cisco uBR7246 VXR router.

Table 1-2 Memory Recommendations for the Cisco uBR7200 Series Routers, Cisco IOS Release 12.2(15)BC1 and 12.2(15)BC2a Feature Sets

Feature Set

Software Image

Recommended
Flash Memory

Recommended
DRAM Memory

Runs
From

Two-Way Data/VoIP Images

DOCSIS Two-Way

ubr7200-p-mz

16 MB Flash

32 MB Flash¹

128 MB DRAM

RAM

DOCSIS Two-Way IP Plus

ubr7200-is-mz

16 MB Flash

32 MB Flash1

128 MB DRAM

RAM

DOCSIS Two-Way with BPI

ubr7200-k8p-mz

16 MB Flash

32 MB Flash1

128 MB DRAM

RAM

DOCSIS Two-Way IP Plus
with BPI

ubr7200-ik8s-mz

16 MB Flash

32 MB Flash1

128 MB DRAM

RAM

DOCSIS Two-Way 3DES

ubr7200-k9p-mz

16 MB Flash

32 MB Flash1

128 MB DRAM

RAM

DOCSIS Two-Way 3DES IP Plus

ubr7200-ik9s-mz

16 MB Flash

32 MB Flash1

128 MB DRAM

RAM

Boot Image

UBR7200 Boot Image

ubr7200-kboot-mz

None

None

—

UBR7200 Boot Image

ubr7200-boot-mz

None

None

—

¹32 MB of Flash is required for Cisco IOS Release 12.2(15)BC2a and later releases in the Cisco IOS BC train.

The image subset legend for Table 1-2 is as follows:

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

•k8 = DOCSIS Baseline Privacy

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

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

•k9 = 3DES level of encryption

Note All images support all of the hardware listed in the "Supported Hardware on the Cisco uBR7200 Series" section, unless otherwise indicated.

Note A Cisco uBR7200 series router requires 256 MB of DRAM memory on the NPE processor card when HCCP redundancy is configured and the router is supporting more than 3,000 cable modems. Using less memory in these conditions results in temporary out-of-memory situations and incomplete synchronization between the Working and Protect interfaces.

12.2 CX Images and Requirements

The 12.2 CX releases are based on Cisco IOS Release 12.2(15)BC1, which is a child of Cisco IOS Release 12.2(15)T. The 12.2 BC train is an interim release train that provides DOCSIS 1.1 two-way support, along with fixes for software caveats and support for selected new features.

The latest image in the 12.2 CX release train, Cisco IOS Release 12.2(15)CX1, provides two different boot images for the Cisco uBR7200 series routers:

•ubr7200-kboot-mz.122-15.CX.bin

The "kboot" version of the boot image is a new version of the boot image software that can run only on the Cisco uBR7200-NPE-G1 processor and the UBR7200-I/O-2FE/E I/O controller, because it is too large to load on the other I/O controllers. This image contains support for almost all supported port adapters, allowing the Cisco uBR7246VXR router to boot over almost any type of WAN interface.

•ubr7200-boot-mz.122-15.CX.bin

The "boot" version of the boot image is small enough to be loaded on I/O controllers with 4MB of Flash memory, but it supports only Ethernet, FastEthernet, Gigabit Ethernet, OC POS, and a limited number of ATM port adapters. If you are using a serial port adapter or most ATM port adapters, you will not be able to boot over the WAN interface.

This difference in boot images affects only the ability of the Cisco uBR7246VXR router to boot over the WAN interface. When the router has successfully loaded the Cisco IOS software, it has connectivity over all of the port adapters that this particular version of Cisco IOS software supports.

Table 1-3 displays the memory recommendations of the Cisco IOS feature sets for the Cisco uBR7200 series universal broadband routers for Cisco IOS Release 12.2(15)CX1. Cisco uBR7200 series routers are only available with a 48 MB or 128 MB of Flash disk memory on the I/O Controller cards. The UBR7200-NPE-G1 uses only compact Flash disk.

Flash disks, an alternative to linear Flash memory, are Flash memory-based devices that can be used as file storage media in the PCMCIA card slots of the I/O Controllers. Each I/O Controller has two PCMCIA slots and can be configured with up to 256 MB of Flash disk memory.

Table 1-3 Memory Recommendations for the Cisco uBR7200 Series Routers, Cisco Release 12.2(15)CX1 Feature Sets

Feature Set

Software Image

Recommended Flash Disk Memory

Recommended
DRAM
Memory

Runs
From

Two-Way Data/VoIP Images

DOCSIS Two-Way

ubr7200-p-mz

48 MB Flash

128 MB DRAM

RAM

DOCSIS Two-Way IP Plus

ubr7200-is-mz

48 MB Flash

128 MB DRAM

RAM

DOCSIS Two-Way with BPI

ubr7200-k8p-mz

48 MB Flash

128 MB DRAM

RAM

DOCSIS Two-Way IP Plus with BPI

ubr7200-ik8s-mz

48 MB Flash

128 MB DRAM

RAM

DOCSIS Two-Way 3DES

ubr7200-k9p-mz

48 MB Flash

128 MB DRAM

DOCSIS Two-Way 3DES IP Plus

ubr7200-ik9s-mz

48 MB Flash

128 MB DRAM

The image subset legend for Table 1-3 is as follows:

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

•k8 = DOCSIS Baseline Privacy

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

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

•k9 = 3DES level of encryption

12.1 EC Images and Requirements

The 12.1 EC train is the Cisco cable-specific early deployment release train that introduces several new feature sets, support for the Cisco uBR-MC28C cable interface line card, and several new software features.

Table 4 displays the memory recommendations of the Cisco IOS feature sets for the Cisco uBR7200 series universal broadband routers for the latest Cisco IOS Release 12.1(20)EC1. Cisco uBR7200 series routers support a 16-MB or 20-MB Type II PCMCIA Flash memory card.

Table 4 Memory Recommendations for the Cisco uBR7200 Series Routers, Cisco Release 12.1(20)EC1 Feature Sets

Feature Set

Software Image

Recommended
Flash
Memory

Recommended
DRAM
Memory

Runs
From

Two-Way Data/VoIP Images

DOCSIS Two-Way

ubr7200-p-mz

16 MB Flash

128 MB DRAM

RAM

DOCSIS Two-Way IP Plus

ubr7200-is-mz

16 MB Flash

128 MB DRAM

RAM

DOCSIS Two-Way with BPI

ubr7200-k1p-mz

16 MB Flash

128 MB DRAM

RAM

DOCSIS Two-Way IP Plus
with BPI

ubr7200-ik1s-mz

16 MB Flash

128 MB DRAM

RAM

Telco-Return Images

DOCSIS IP Plus Telco Return

ubr7200-ist-mz

16 MB Flash

128 MB DRAM

RAM

DOCSIS IP Plus Telco Return
with BPI

ubr7200-ik1st-mz

16 MB Flash

128 MB DRAM

RAM

Boot Image

UBR7200 Boot Image¹

ubr7200-boot-mz

None

None

—

¹The 12.1 EC UBR7200 boot image is provided for the IUBR7200-I/O-2FE/E input/output controller, which must use the Cisco IOS 12.1(10)EC1 or later 12.1 EC release boot image. This image cannot be used on any other I/O controllers.

The image subset legend for Table 4 is as follows:

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

•k1 = 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 bridging and no NAT

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

•t = DOCSIS telco return

Note All images support all of the hardware listed in the section "Supported Hardware on the Cisco uBR7200 Series" section, unless otherwise indicated.

Cisco uBR7200 Series Chassis Overview

The Cisco uBR7200 series universal broadband routers allow high-speed data services to be packaged similar to cable TV service or video fare. Cisco uBR7200 Series equipment supports data and digitized voice connectivity between Internet Protocol (IP) hosts and connected subscribers using a bidirectional cable TV and IP backbone.

Note For 6 MHz National Television Systems Committee (NTSC) cable plants not fully upgraded to two-way transmission, the equipment works with dial-up access products to support upstream traffic from Data-over-Cable Service Interface Specification (DOCSIS)-based telco-return cable interfaces.

For international cable plants that use 8-MHz Phase Alternating Line (PAL) or Systeme Electronique Couleur Avec Memoire (SECAM) channel plans, Cisco uBR7200 Series equipment supports bidirectional transfer of traffic between the Cable Modem Termination System (CMTS) and EuroDOCSIS-based CMs or set top box (STB) units with integrated EuroDOCSIS modems.

Cable companies and Internet service providers (ISPs) can allocate radio frequency (RF) channel capacity for Internet access, Virtual Private Network (VPN), or Voice over IP (VoIP) services using a hybrid fiber/coax (HFC) or 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 uBR7246 VXR Universal Broadband Router—Supports higher density and broad media configurations; the chassis contains up to two single-width IP backbone interfaces, up to four cable TV RF interfaces, up to two power supplies, an optional clock interface that enables the router to synchronize to an external timing reference, a faster processor, and higher bus bandwidth.

•Cisco uBR7246 Universal Broadband Router—Supports large cable installations; the chassis contains up to two single-width IP backbone interfaces, up to four cable TV RF interfaces, and up to two power supplies.

•Cisco uBR7223 Universal Broadband Router—Supports small-to-medium cable installations; the chassis contains one single-width IP backbone interface and up to two cable TV RF interfaces.

Note This guide focuses on Cisco uBR7200 Series software. For detailed descriptions of Cisco uBR7200 Series chassis and components, refer to the Cisco uBR7200 Series Hardware Installation Guide and appropriate field replaceable unit (FRU) documents on Cisco.com.

Cisco cable interface line cards serve as the RF cable TV interfaces, supporting downstream and upstream signal combining and splitting arrangements. The cards currently require external upconverters to connect to the cable system. Cisco port adapters connect to the IP backbone and external networks. Your cable plant, combined with your planned and installed subscriber base, service offering, and external network connections, determine the Cisco uBR7200 Series chassis, cable interface line cards, port adapters, and other components you use.

Data is modulated or demodulated using either of the following two methods:

•Downstream 6 MHz channels in the 54-to-860 MHz range with upstream ranges of 5 to 42 MHz. Cisco MC11 FPGA, MC11C, MC12C, MC14C, MC16B, MC16C, and MC16S cable interface line cards support NTSC channel operation, using standard (STD), Harmonic Related Carrier (HRC), or Incremental Related Carrier (IRC) frequency plans conforming to EIA-S542.

NTSC uses a 6 MHz-wide modulated signal with an interlaced format of 25 frames per second and 525 lines per frame. NTSC is compatible with CCIR Standard M. PAL, used in West Germany, England, Holland, Australia, and several other countries.

Note Cisco 6 MHz products can be used in 8 MHz cable plants. The products, however, operate at a maximum downstream bandwidth of 27 Mbps, ignoring 2 MHz of available channel width, and limiting upstream channel choices to the range below 42 MHz.

•Downstream 8 MHz channels in the 85-to-860 MHz range with an upstream range of 5 to 65 MHz. The Cisco MC16E cable interface line card supports PAL and SECAM channel plans using an 8 MHz modulated signal.

PAL uses a 625-line scan picture delivered at 25 frames per second where the color carrier phase definition changes in alternate scan lines. SECAM uses an 819 line scan picture that provides better resolution than PAL's 625-line and NTSC's 525-line.

The MC16E uses the EuroDOCSIS J.112 (Annex A) standard, CableLabs ECR RFI-R-98036, which is similar to the Digital Audio Video Council/Digital Video Broadcast (DAVIC/DVB) ITU J.83 Annex A physical layer. Cable companies can support data, voice, and video services with DOCSIS-based CMs or set top boxes (STBs) that contain integrated EuroDOCSIS modems.

Caution The MC16E supports only Annex A operation and should not be used in production cable plants that support a 6 MHz channel plan.

Note The difference between DOCSIS and EuroDOCSIS is at the physical layer. EuroDOCSIS support requires the Cisco MC16E cable interface line card, appropriate upconverters that support an 8 MHz PAL or SECAM channel plan, appropriate diplex filters, and EuroDOCSIS-based CMs or STBs.

The DOCSIS Radio Frequency (RF) specification defines the RF communication paths between the CMTS and CMs (or CMs in STBs). The DOCSIS RF specification defines the physical, link, and network layer aspects of the communication interfaces. It includes specifications for power level, frequency, modulation, coding, multiplexing, and contention control. Cisco offers products that support all DOCSIS error correction encoding and modulation types and formats, and that support DOCSIS Annex B or EuroDOCSIS Annex A operations.

Cisco uBR7200 Series Universal Broadband Routers

The Cisco uBR7200 series universal broadband routers are based on the Data-over-Cable Service Interface Specification (DOCSIS) standards. Each is designed to be installed at a cable operator's headend facility or distribution hub and to function as the cable modem termination system (CMTS) for subscriber-end devices such as the Cisco uBR905 and Cisco uBR925 cable access routers, and other DOCSIS-compliant CMs and set-top boxes (STBs).

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. For cable plants not fully upgraded to support two-way cable transmission, the routers support DOCSIS-compliant telco return, where the cable modem's return path to the CMTS uses a dial-up telephone line connection instead of an upstream channel over the coaxial cable. The telco-return delivery mechanism enables cable operators to accelerate deployment of high-speed data services before the cable systems are upgraded to two-way plants.

The Cisco uBR7200 series routers support IP routing with a wide variety of protocols and combinations of Ethernet, Fast Ethernet, Gigabit Ethernet, serial, High-Speed Serial Interface (HSSI), Packet over SONET (POS) OC-3 and OC-12c, and Asynchronous Transfer Mode (ATM) media.

Cisco uBR7246 VXR Universal Broadband Router

The Cisco uBR7246VXR offers an industry-proven CMTS and carrier-class router in a scalable platform with a high-performance network processing engine to support data, voice, and video services for medium to large network installations.

The Cisco uBR7246 VXR provides the following major hardware features:

•High-performance network processing engine or network services engine

•I/O controller

•Up to two network interface port adapters

•Up to four cable interface line cards

•Up to two removable power supplies providing load-sharing and redundancy capabilities

•Two Personal Computer Memory Card International Association (PCMCIA) slots that allow for software upgrades through the use of Flash memory cards

Note The Cisco uBR7246 VXR chassis does not support the MC11-FPGA cable interface line card.

Cisco uBR7246 Universal Broadband Router

The Cisco uBR7246 offers an industry-proven CMTS and carrier-class router in a scalable platform to support data, voice, and video services for medium to large network installations. The Cisco uBR7246 provides the following major hardware features:

•Network processing engine

•I/O controller

•Up to two network interface port adapters

•Up to four cable interface line cards

•Up to two removable power supplies providing load-sharing and redundancy capabilities

•Two PCMCIA slots that allow for software upgrades through the use of Flash memory cards

Cisco uBR7223 Universal Broadband Router

The Cisco uBR7223 is a cost-effective, scalable interface between subscriber CMs and the backbone data network, and is designed specifically for small to medium network installations.

The Cisco uBR7223 provides the following major hardware features:

•Network processing engine

•I/O controller

•One network interface port adapter

•Up to two cable interface line cards

•One removable power supply (The Cisco uBR7223 does not feature load-sharing and redundant power supply capability like the Cisco uBR7246 VXR and Cisco uBR7246.)

•Two PCMCIA slots that allow for software upgrades through the use of Flash memory cards

Supported Hardware on the Cisco uBR7200 Series

Table 1-5 provides a quick overview of the major hardware features of the Cisco uBR7200 series routers.

Table 1-5 Cisco uBR7200 Series Hardware Overview

Supported Hardware

Cisco uBR7246 VXR

Cisco uBR7246

Cisco uBR7223

Network Processing Engines

One of the following:

•UBR7200-NPE-G1

•NPE-225

•NPE-300

•NPE-400

One of the following:

•NPE-150

•NPE-200

•NPE-225

One of the following:

•NPE-150

•NPE-200

•NPE-225

I/O Controllers

One of the following:

•UBR7200-I/O

•UBR7200-I/O-FE

•UBR7200-I/O-2FE/E

One of the following:

•UBR7200-I/O

•UBR7200-I/O-FE

One of the following:

•UBR7200-I/O

•UBR7200-I/O-FE

Network Interface Port Adapters

Up to two

Up to two

One

Cable Interface Line Cards

Up to four

Up to four

Up to four

Removable Power Supplies

Up to two

Up to two

One

PCMCIA Slots

Two

Two

Two

Note Earlier release notes stated that the NPE-175 was also supported on the Cisco uBR7200 series routers. Because the NPE-175 has reached its end of life and was never made available for order on the Cisco uBR7200 series routers, it has been removed from the table.

The UBR7200-NPE-G1 does not require that an I/O controller be installed. Refer to the Cisco uBR7200 Series Software Release Notes on Cisco.com:

http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/ub7200rn/index.htm

Network Processing Engines

The Cisco uBR7246 VXR supports the following Network Processing Engines (NPEs):

•UBR7200-NPE-G1

•NPE-225

•NPE-300

•NPE-400

The Cisco uBR7223 and the Cisco uBR7246 support the following Network Processing Engines (NPE) :

•NPE-150

•NPE-200

•NPE-225

Note The NPE-300 and NPE-400 are not supported on the Cisco uBR7223 and the Cisco uBR7246. The NPE-150 and NPE-200 are not supported on the Cisco uBR7246 VXR.

For more information, refer to the following resources on Cisco.com:

•Network Processing Engine and Network Services Engine Installation and Configuration Guide

•Memory Replacement Instructions for the Network Processing Engine or Network Services Engine and Input/Output Controller

I/O Controllers

The Cisco uBR7200 series universal broadband routers support the following input/output (I/O) controllers:

•UBR7200-I/O-2FE/E input/output controller

–Features two Fast Ethernet ports and one Ethernet port.

–Equipped with 2 RJ-45 receptacles for 10/100 Mbps operation.

–Supported for the Cisco uBR7246VXR router.

–The Cisco IOS Release 12.1(10)EC boot helper image [ubr7200-boot-mz.12.1-10.EC] must be used on this controlle.r

•UBR7200-I/O-FE

–Features one Fast Ethernet port.

–Equipped with an MII receptacle and an RJ-45 receptacle for use at 100 Mbps full-duplex or half-duplex operation.

–Only one receptacle can be configured for use at a time.

–Supported for Cisco uBR7223, Cisco uBR7246, and Cisco uBR7246 VXR routers.

–The 12.0(15)SC [ubr7200-boot-mz.12.0-15.SC] boot helper image is recommended for this controller.

•UBR7200-I/O

–Has no Fast Ethernet port.

–Supported for Cisco uBR7223, Cisco uBR7246, and Cisco uBR7246 VXR routers.

–The 12.0(15)SC [ubr7200-boot-mz.12.0-15.SC] boot helper image is recommended for this controller.

Note The Single-Port Fast Ethernet I/O Controller (UBR7200-I/O-FE) reached its End of Sale (EOS) point on June 30, 2003. For details, see the Addendum to Product Bulletin, No. 1725, available at the following location on Cisco.com:

http://www.cisco.com/en/US/products/hw/cable/ps2217/prod_eol_notice09186a00800a470d.htm

Note Do not use the 12.1(10)EC boot helper image with the UBR7200-I/O-FE and UBR7200-I/O controllers.

Network Interface Port Adapters

The Cisco uBR7200 series routers support multiple port adaptors with Ethernet, Gigabit Ethernet and Serial versions. Enhancements and options are available in multiple Cisco IOS Software release trains. For the latest information about supported port adaptors, refer to Cisco uBR7200 Series Software Release Notes on Cisco.com:

http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/ub7200rn/index.htm

Note Not all Cisco uBR7200 series routers support all port adapters. Some port adapters must be at certain revision levels to be used in the Cisco uBR7246 VXR router.

Note Cisco recommends using the most current release in a release train if possible.

Cable Interface Line Cards

The Cisco uBR7200 series supports the following cable interface line cards, all of which provide connection to the hybrid fiber-coaxial (HFC) network.

Table 1-6 provides a quick overview of the cable interface line cards that are supported with Cisco uBR7200 series routers.

Table 1-6 Cisco uBR7200 Series Cable Interface Line Cards

Cable Interface Line Card

Upstream Ports

Downstream Ports

Additional Features

MC11C

1

1

MC12C

2

1

MC14C

4

1

MC16C

6

1

MC16E

6

1

EuroDOCSIS (Annex A) Support

MC16S

6

1

Enhanced software- and hardware-based Spectrum Management Support

MC28C

8

2

MC28C-BNC

8

2

BNC connectors instead of F-connectors

For the latest information about supported cable interface line cards, refer to Cisco uBR7200 Series Software Release Notes on Cisco.com:

http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/ub7200rn/index.htm

System Interoperability

This section describes guidelines about the interoperability of certain features in the Cisco uBR7200 series universal broadband routers. Additional DOCSIS interoperability is described in the "Supported Software Features for the Cisco uBR7200 Series" section.

Cable Modem Interoperability

The Cisco uBR7200 series interoperates with the following cable modems:

•DOCSIS-based two-way cable modems that support basic Internet access, VoIP, or Virtual Private Networks (VPNs).

•Telco-return Cable modems

To support telco return, use a Cisco uBR7200 series software image that contains "t" in its file name. The telco-return cable modem must be DOCSIS-based or compliant and must be configured to support telco return.

Note Some third-party telco-return CMs cannot receive traffic over the same downstream channel as CMs operating on a two-way data system. In these instances, segment your cable plant to allow more than one downstream channel.

•EuroDOCSIS cable modems or STBs with integrated EuroDOCSIS CMs using Cisco MC16E cable interface line cards and Cisco IOS Release 12.1(2)EC1 or higher.

EuroDOCSIS operation support includes 8-MHz Phase Alternating Line (PAL) or Systeme Electronique Couleur Avec Memoire (SECAM) channel plans.

Clock Synchronization

The Cisco uBR7200 series support clock hardware and software to enable high-quality delivery of IP telephony services through synchronized data transmissions. To support the clock feature set, a Cisco uBR7246 VXR chassis must be used. The Cisco uBR7246 VXR must contain a clock card and an MC16S, MC16E, or MC28C cable interface line card. Only the MC16S, MC16E, and MC28C cable interface line cards support the external clock reference from the clock card to distribute that signal to CMs or STBs attached to the specific network segments. A chassis configured with an MC16S or MC16E cable interface line card must be running Cisco IOS Release 12.1(2)EC1 or higher. A chassis configured with an MC28C cable interface line card must be running Cisco IOS Release 12.1(3a)EC1 or higher.

Each cable modem must also support VoIP applications and the clock reference feature set to enable synchronized timing. The Cisco uBR924 cable access router, running Cisco IOS Release 12.0(7)T or later, supports the clock reference feature set automatically.

Cisco uBR7200 Series Router Configuration Overview

This section describes Cisco uBR7200 series router features that require software configuration, and summarizes these features of the Cisco uBR7200 series router:

•Port Adapter and Line Card Slot and Logical Interface Numbering

•MAC-Layer Addressing

•Cable Interface Line Cards

•Cable Interface Line Card Slots

•Interfaces and Physical Ports

•Port Adapter Slots

Refer to the "Cisco uBR7200 Series Router Configuration Tools" section for additional configuration utilities.

Port Adapter and Line Card Slot and Logical Interface Numbering

For Cisco uBR7200 series components, the slot number is the chassis slot in which a port adapter or a cable interface card is installed. The logical interface number is the physical location of the interface port on a port adapter. Numbers on a Cisco uBR7200 series router begin with 0. Using a Cisco uBR7246 to illustrate, slot/port positioning is as follows:

•Slot 0—I/O controller

•Slot 1-2—Cisco port adapters

•Slot 3-6—Cisco cable interface line cards; the upstream ports on the card start with port 0.

To configure the system, define the Cisco uBR7200 series interfaces, using the interface type slot/port commands:

•Type—Cable

•Slot—Slot number in chassis. Slot numbers begin with 0.

•Port—Port number on a cable interface line card slot. Port numbers begin with a 0.

Configuring Cisco cable interface line cards is particularly important because these components serve as the cable TV RF interfaces. Configuration involves the following tasks for each interface:

•Setting the downstream center frequency for the card to reflect the digital carrier frequency of the downstream RF carrier (the channel) for that downstream port. To do this, enter the fixed center frequency for your downstream RF carrier in Hz:
Router (config-int)# cable downstream frequency down-freq-hz
Note This command has no effect on the external upconverter, which actually sets the downstream frequency. Noting the correct value for the cable interface line card, however, provides useful information for troubleshooting.

The digital carrier frequency is specified to be the center of a 6 or 8 MHz channel based on your channel plan. To illustrate for NTSC channel plans, EIA channel 95 spans 90.00 to 96.00 MHz. The center frequency is 93.000 MHz which is the digital carrier frequency that should be configured as the downstream frequency.

Tip The digital carrier frequency is not the same as the video carrier frequency. For EIA channel 95, the video carrier frequency is 91.250 MHz which is 1.75 MHz below the center frequency.

•Activating the downstream port on the cable interface line card for data transmission over the HFC network, using the following command:
Router (config-int)# no shutdown
The particular downstream port LED should light.

•Setting the upstream frequency of your RF output to comply with the expected input frequency of your Cisco cable interface line card.

Tip The valid range for a fixed upstream frequency is 5,000,000 Hz to 65,000,000 Hz for the MC16E cable interface line card. The valid range for all other cable interface line cards that support NTSC operations is 5,000,000 Hz to 42,000,000 Hz.

The cable interface will not operate until you either set a fixed upstream frequency or create and configure a spectrum group. Enter the fixed center frequency for your upstream RF carrier in Hz and specify a port number from 0 to 5:
Router (config-int)# cable upstream port frequency up-freq-hz
Note Make sure that the selected upstream frequency does not interfere with the frequencies used for any other upstream applications in your cable plant.

•Entering an upstream RF carrier frequency for each upstream port on a cable modem.

•Activating the RF carrier on each upstream port to support data from CMs or set top boxes on your network to the Cisco uBR7200 series router. Enable upstream data traffic, using the following command:
Router (config-int)# no cable upstream port shutdown 
The specified upstream port LED lights.

Repeat the above for each upstream port to activate.

•Verifying your settings using the following command:
Router# show running-config
•Saving the configuration to nonvolatile random access memory (NVRAM) so that your settings are retained after a power cycle:
Router# copy running start
•Verifying the upstream frequency, using the show controllers cable slot/port upstream command for the upstream port you just configured.

•Verifying the downstream center frequency, using the show controllers cable slot/port downstream command for the downstream port you just configured.

MAC-Layer Addressing

The Media Access Control (MAC)-layer or hardware address is a standardized data link layer address required for certain network interface types. These addresses are not used by other devices in the network; they are specific and unique to each port. The Cisco uBR7200 series uses a specific method to assign and control the MAC-layer addresses for port adapters.

All LAN interfaces (ports) require unique MAC-layer addresses, also known as hardware addresses. Typically, the MAC address of an interface is stored on a memory component that resides directly on the interface circuitry; however, the online insertion and removal (OIR) feature requires a different method. The OIR feature lets you remove a port adapter or cable interface card and replace it with another identically configured one. If the new port adapter or cable interface card matches the port adapter or cable interface card you removed, the system immediately brings it online.

To support OIR, an address allocat