N5K: Do i need pim configuration to enable inter vlan multicast communication within a switch?

[LuensmannIT]

Hey Community,

we have one N5K-C5696Q Switch in our datacenter which is responsible for the ip igmp snooping querier and ip igmp snooping functionality.

Intra VLAN multicast communication, even between L2 connected datacenter sites, works just fine with the following configuration:

global:

ip igmp snooping v3-report-suppression

per VLAN:

vlan configuration ID

ip igmp snooping querier 10.xx.xx.xx
ip igmp snooping version 3

Until now, inter VLAN communication between different VLANs within the datacenter was not necessary, so we never tried if our config would work. We are now requested to enable this kind of functionality and it seems that inter vlan communication is not working.

Do we need PIM configuration to get this to work, even if all VLANs are handled on this switch and we don't have other mcast routers active?

We already have the "feature pim" enabled

We do not have any pim configuration so far.

We are using vpc between switches

We have two VRFs

kickstart: version 7.3(6)N1(1)
system: version 7.3(6)N1(1)

Thanks for help,

Sebastian

[Sergiu.Daniluk · Accepted solution]

For multicast routing to work (inter-vlan mcast communication) you need to enable PIM feature (I see you already done that) and you need to configure pim on the SVIs (ip pim sparse-mode). Should be sufficient.

Stay safe,

Sergiu

[LuensmannIT]

Hi Sergiu,

thanks for your quick reply.

I will schedule a maintenance window and mark your post as "accept as solution" as soon as i tested it.

Stay safe,

Sebastian