SRE (WLC) and Multicast

[enrique jehanno]

I have a wireless controller configured on a SRE.

Everything works fine, however I have an issue with multicast and SRE (WLC).

Below my configuration:

Host -> interface vlan 60 (Router) inter gi0/1.60 <- LAN

When my host (on the LAN) send an IGMP join, it's works! The host join the group.

But when my host send the same IGMP join on the WLAN, I never see it on the router with commands:

show ip igmp memberships

show ip mroute

I have applied this configuration:

https://supportforums.cisco.com/docs/DOC-24187

Do you know how to configure multicast on a SRE (WLC) ?

Regards,

[Saravanan Lakshmanan]

on wlc run the debug.

WLC>debug bcast igmp enable

[enrique jehanno]

thanks for your help:

Debug on the controller (SRE):

(Cisco Controller) >*bcastReceiveTask: Jun 29 07:33:29.450:  Received IGMP v3 packet from client 74:de:2b:2e:e2:b1 with num_group =  256, Mcast GROUP = 224.0.37.42

*bcastReceiveTask: Jun 29 07:33:29.450:  report packet recevied for group addr 224.0.37.42

*bcastReceiveTask: Jun 29 07:33:29.450: join group 224.0.37.42 and vlan = 60 is not there adding...

*bcastReceiveTask:  Jun 29 07:33:29.450:  74:DE:2B:2E:E2:B1 client joining the group:  224.0.37.42, with status = 0, qos=0 and valid = 1...

*bcastReceiveTask:  Jun 29 07:33:29.450: IGMP message send succeeded src 192.168.61.10 and  dst 224.0.37.42, hdr len 32,message type 16

*bcastReceiveTask: Jun 29 07:33:29.905: Received IGMP v3 packet  from client 74:de:2b:2e:e2:b1 with num_group = 256, Mcast GROUP =  224.0.37.42

*bcastReceiveTask: Jun 29 07:33:29.905:  report packet recevied for group addr 224.0.37.42

Debug on the router:

Jun 29 07:33:29.400: IGMP(0): Received v2 Report on Vlan60 from 192.168.61.10 for 224.0.37.42

Jun 29 07:33:29.400: IGMP(0): Received Group record for group 224.0.37.42, mode 2 from 192.168.61.10 for 0 sources

Jun 29 07:33:29.400: IGMP(0): WAVL Insert group: 224.0.37.42 interface: Vlan60Successful

Jun 29 07:33:29.400: IGMP(0): Switching to EXCLUDE mode for 224.0.37.42 on Vlan60

Jun 29 07:33:29.400: IGMP(0): Updating EXCLUDE group timer for 224.0.37.42

Jun 29 07:33:29.400: IGMP(0): MRT Add/Update Vlan60 for (*,224.0.37.42) by 0

[Saravanan Lakshmanan]

does mgid created here. monitor>> multicast>>

If you're using AP mode Multicast - don't use the same ip for Multicast client traffic.

are multicast pim enabled on management, AP, client vlan on wired side.

keep WLC's Management vlan, AP Vlan, Wireless client on same L2 and try.

try AP mode unicast.

[Saravanan Lakshmanan]

#Native IGMPv3 is not supported on WLC however IGMPV3 report will be forwarded as IGMPv2 to uplink router.

#Just for testing could you use igmpv2 join request instead v3 for wireless client.

[enrique jehanno]

This application can not use IGMPv2 Join but we have maybe found a solution to use unicast (easier).