Chapter 14: Multicast Routing Configuration Guide

To prevent the SSR from forwarding any data destined to a scoped group on an interface, enter the following command in the Configure mode:

Configure the DVMRP scope.

dvmrp set interface <ip-addr>scope <ip-addr/mask>

Configuring a DVMRP Tunnel

The SSR supports DVMRP tunnels to the MBONE (the multicast backbone of the Internet). You can configure a DVMRP tunnel on a router if the other end is running DVMRP. The SSR then sends and receives multicast packets over the tunnel. Tunnels are CPU-intensive; they are not switched directly through the SSR’s multitasking ASICs.

DVMRP tunnels need to be created before being enabled. Tunnels are recognized by the tunnel name. Once a DVMRP tunnel is created, you can enable DVMRP on the interface. The SSR supports a maximum of eight tunnels.

To configure a DVMRP tunnel, enter the following command in Configure mode:

Configure a DVMRP tunnel to MBONE.

dvmrp create tunnel <string> local <ip-addr>remote <ip-addr>

You can also control the rate of DVMRP traffic in a DVMRP tunnel. The default rate is 500 Kbps.

To control the rate of DVMRP traffic, enter the following command in Configure mode:

Configure the rate in a DVMRP tunnel.

dvmrp set interface <ip-addr>rate <number>

Monitoring IGMP & DVMRP

You can monitor IGMP and DVMRP information on the SSR.

To display IGMP and DVMRP information, enter the following commands in the Enable mode.

Show all interfaces running

dvmrp show interface

DVMRP. Also shows the neighbors

 

on each interface.

 

 

 

Display DVMRP routing table.

dvmrp show routes

 

 

Shows all the interfaces and

igmp show interface

membership details running IGMP.

 

 

 

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Cabletron Systems 9032578-05 manual Monitoring Igmp & Dvmrp, Configuring a Dvmrp Tunnel, Shows all the interfaces