Creating Policies For Class Of Service Or For Upgrading Cable Modem Cisco Ios Images; Cnr Steps To Support Subinterfaces - Cisco cBR Series Configuration Manual

Converged broadband routers application - voice and video configuration guide

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Creating Policies for Class of Service or for Upgrading Cable Modem Cisco IOS Images

pc-arlington1_2-0 208.16.182.16 255.255.255.248 assignable 208.16.182.17-208.16.182.22

tagComputer Default GW=208.16.182.17 (assigned by scripts)

pc-toledo1_3-0 208.16.182.24 255.255.255.248 assignable 208.16.182.2-208.16.182.30 tagComputer

Default GW=208.16.182.25 (assigned by scripts)

Remember the last valid address in the .248 subnet range is the broadcast address; do not use this.

Note

Creating Policies for Class of Service or for Upgrading Cable

Modem Cisco IOS Images

To support Class of Service (CoS), define:

• Scope selection tags—Identifiers that describe types of scope configurations

This is needed for Option82.

Note

• Client classes—Class with which a group of clients is associated

Scope selection tags are excluded from or included in client-classes.

Note

• Client—Specific DHCP clients and the defined class to which they belong

To assign the CoS or use Option82, make a client entry with a MAC address and point to the appropriate

policy. To use client-based MAC provisioning, add a client entry "default - exclude," then put in MAC addresses

for all devices (for example, cable interfaces and PCs) in the client tab and select the policy to use, including

the appropriate tag.

The CNR configuration is done differently if subinterfaces are configured. Here is an example. If you have

configured two ISP subinterfaces and one management subinterface on a Cisco cBR-8 router, make sure that

the management subinterface is the first subinterface that is configured. If cable interface three—c3/0/0—is

being used, create c3/0/0.1, c3/0/0.2 and c3/0/0.3 as three subinterfaces and c3/0/0.1 as the first subinterface

configured as the management subinterface.

Note

The Cisco cBR-8 router requires management subinterfaces to route DHCP packets from CMs when they

first initialize because the Cisco cBR-8 router does not know the subinterfaces they belong to until it has

seen the IP addresses assigned to them by gleaning DHCP reply message from CNR.

In CNR, complete the following steps for such a configuration:

Cisco cBR Series Converged Broadband Routers Application—Voice and Video Configuration Guide

Cisco Network Registrar for the Cisco CMTS Routers

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