Wired Intelligent Edge

Hello,

I have little knowledge of multicast/IGMP/PIM and would like some assistance.

I have a building with a converged L3 switching to the edge infrastructure (core=8212zl's & edge=5406zl's), with each switch having it's own vlans/subnets (one for each of management/voice/data/IPTV).

I have one edge switch that has all of the IPTV sources on one vlan, which use multicast to transmit to TV's around the building on other switches/vlans.

One of these sources does not transmit off it's own switches vlan (works OK on the same switch vlan), if I look at the mroute table I see:

  Group Address=239.255.255.255

  Source Address=172.28.x.y

  Neighbor=<blank>

  VLAN=30

whereas it is configured with a group address of 239.192.9.84 and I would have expected to have seen this instead of the 239.255.255.255 address in the table like the other media sources.

The group address 239.192.9.84 is shown in the IGMP table in the Active Group Addresses list though.

A wireshark capture on another edge switch proves that no data id been transmitted and the channel is also missing from the SAP list.

I think that the issue is with the media server and not the network, but can anyone confirm this or provide me with some more things to look at.

Thanks.

I assume you have multicast routing and pim sparse enabled on all routers ?

(and "ip igmp" enabled on all vlans)

We use the same models at our site (5400zl 8212zl) and multicasting is enabled,

and it works.  At our site, the DR is a Cisco 6500/SUP720,  I assume at your site

the 8212zl is your DR

ip multicast-routing

router pim
   exit

vlan NNN
   ip pim-sparse
      ip-addr any
      exit
   exit