Multicasting

[Docklands]

We have a few 2960-X switches that are connected to ISR's using HSRP. The ISR's are have multicasting enabled and PIM Dense-mode on the sub-interfaces that connect to the switches. The switches have IGMP Snooping running by default. If we run VLC on two of the switches we are able to stream multicast through the routers with no problems.

However, we have hosts on one switch VLAN that need to receive multicasts from 225.225.0.1 but the host do not send out membership requests.

Is there a way of configuring the switches to requests membership of 225.225.0.1 on behalf of the hosts?

Thanks

[Jon Marshall]

Glad to hear you got it working.

Just one thing to be aware of.

The "ip igmp join-group ..." command means the switch is now a member of the multicast group so it can have an effect on the CPU.

Just something to watch out for.

Jon

[Docklands]

Hi Chris,

After much experimenting the command 'ip igmp join-group 225.225.0.1' on the layer 3 interface together with 'ip igmp snooping vlan xxx static 225.225.0.1 interface gi x/x/x' on the switch works.

Thanks again for your help,

Mike