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New Member

IGMP v2 Querier on Catalyst 4507R-E

Hi,

I have three Catalyst 4507R-E switches networked which contain a number of security devices. The last of which to be added on are IP security cameras/servers which use multicasting. My question is, is there a way to enable one of these switches to act as the querier for the network?

2 ACCEPTED SOLUTIONS

Accepted Solutions
Hall of Fame Super Silver

Re: IGMP v2 Querier on Catalyst 4507R-E

Hello Russell,

enabling ip multicast-routing and ip pim sparse-dense mode on the interface provides also the IGMP querier function that allows to use IGMP snooping that need to listen to all IGMP reports.

on release 12.2.46 sg I didn't find a command for igmp querier that would be useful if devices are working only at layer 2.

I think it is supported on C6500 on same releases.

http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/46sg/configuration/guide/mcastmls.html#wp1090447

Hope to help

Giuseppe

Hall of Fame Super Blue

Re: IGMP v2 Querier on Catalyst 4507R-E

Russell

AFAIK only the supervisor 6E has support for the IGMP querier function. You only need this if you are running multicast within the same vlan and are not using multicast routing.

If you need multicast routing then as Guiseppe says you can enable pim on the vlan interfaces and this will enable IGMP by default.

Jon

3 REPLIES
Hall of Fame Super Silver

Re: IGMP v2 Querier on Catalyst 4507R-E

Hello Russell,

enabling ip multicast-routing and ip pim sparse-dense mode on the interface provides also the IGMP querier function that allows to use IGMP snooping that need to listen to all IGMP reports.

on release 12.2.46 sg I didn't find a command for igmp querier that would be useful if devices are working only at layer 2.

I think it is supported on C6500 on same releases.

http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/46sg/configuration/guide/mcastmls.html#wp1090447

Hope to help

Giuseppe

Hall of Fame Super Blue

Re: IGMP v2 Querier on Catalyst 4507R-E

Russell

AFAIK only the supervisor 6E has support for the IGMP querier function. You only need this if you are running multicast within the same vlan and are not using multicast routing.

If you need multicast routing then as Guiseppe says you can enable pim on the vlan interfaces and this will enable IGMP by default.

Jon

New Member

Re: IGMP v2 Querier on Catalyst 4507R-E

Guiseppe, Jon,

Thanks for your help, it has clarified my issue. I've now configured the switch(es) to run multicast across the same vlan, without using multicast routing (as it's not currently required).

Russ

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