Cabletron Systems SmartSwitch manual Monitoring Igmp & Dvmrp

Chapter 12: Multicast Routing Configuration Guide

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.
Shows all IGMP group	igmp show memberships
memberships on a port basis.
Show all IGMP timers.	igmp show timers
Show information about multicasts	l2-tables show igmp-mcast-registration
registered by IGMP.
Show IGMP status on a VLAN.	l2-tables show vlan-igmp-status
Show all multicast Source, Group	mulitcast show cache
entries.

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