Chapter 14: Multicast Routing Configuration Guide

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.

 

 

 

Show all interfaces running

multicast show interfaces

multicast protocols (IGMP,

 

DVMRP).

 

 

 

Show all multicast routes.

multicast show mroutes

 

 

Configuration Examples

The following is a sample SSR configuration for DVMRP and IGMP. Seven subnets are created. IGMP is enabled on 4 IP interfaces. The IGMP query interval is set to 30 seconds. DVMRP is enabled on 5 IP interfaces. IGMP is not running on “downstream” interfaces.

!Create VLANS.

vlan create upstream ip

vlan add ports et.5.3,et.5.4 to upstream

!Create IP intefaces

!

interface create ip mls15 address-netmask 172.1.1.10/24 port et.5.8 interface create ip company address-netmask 207.135.89.64/25 port et.5.1 interface create ip test address-netmask 10.135.89.10/25 port et.1.8 interface create ip rip address-netmask 190.1.0.1 port et.1.4 interface create ip mbone address-netmask 207.135.122.11/29 port et.1.1 interface create ip downstream address-netmask 10.40.1.10/24 vlan upstream

!

!Enable IGMP interfaces.

igmp enable interface 10.135.89.10 igmp enable interface 172.1.1.10

igmp enable interface 207.135.122.11 igmp enable interface 207.135.89.64

!Set IGMP Query Interval

!

igmp set queryinterval 30

!

!Enable DVMRP

dvmrp enable interface 10.135.89.10

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SmartSwitch Router User Reference Manual

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Cabletron Systems 9032578-05 manual Shows all Igmp group, Memberships on a port basis Show all Igmp timers