Multicast VLAN Routing

[tnotter]

I am trying to get Multicast packets to cross VLANs on a 3560 switch. I have IP phones off VLAN 2 and the rest of the network on vlan 1. Port 1 is only in vlan 1 and the rest are trunk ports in both vlan 1 and 2. Phones are Vlan 2. I have routing turned on.

Attached is my router config and a debug of the multicast group. I did a monitor of both of the ports (fa 0/1 (router port) and fa 0/19 (phone port) and port fa 0/1 is seeing the multicast traffic but does not show up on port 0/19.

[e-dennington]

Looks like you need to enable multicast routing using the "ip multicast-routing" command. Also you need to set the pim mode on both vlan interfaces, i.e. "pim sparse-mode"

[tnotter]

I have a CAT 3560 switch on 12.2.25.

Neither the ip multicast-routing for the switch nor pim sparse-mode for the vlan interface is available for this IOS. I looked to see if could go to 12.3 or 12.4 but there is no version of IOS for this switch.

[e-dennington]

12.2.25 should be okay. You probably need to upgrade to the IP Services image of 12.2.25 though. This image used to be known as EMI. The default IOS on the 3560 only supports layer 2 functionality.

[tnotter]

Thanks it is working now.

[e-dennington]

Glad I could help.