Cisco 7613 Router - Multicasting is not working

Akhileshpk_2 · ‎08-08-2011

Hi All,

We are facing an issue while configuring Multicasting on Cisco 7613 Router (IOS - c7600rsp72043-advipservicesk9-mz.122-33.SRE2.bin).

Below explains the connectivity details of the same:

PC (Multicast Server) --> Cisco 7613 Router--> PC (Multicast Client)

Multicast Server - 20.1.1.2 - Connected to 12/1 port of the 7613 Router (Gig12/1 - 20.1.1.1)

Multicast Client - 30.1.1.2 - Connected to 12/2 port of the 7613 Router (Gig 12/2 - 30.1.1.1)

Multicast IP Address - 239.10.10.10

The configuration of the 7613 Router is shown below (Attached also):

ip multicast-routing

!

interface GigabitEthernet12/1

ip address 20.1.1.1 255.255.255.0

ip pim sparse-dense-mode

ip igmp join-group 239.10.10.10

speed 100

no cdp enable

end

!

interface GigabitEthernet12/2

ip address 30.1.1.1 255.255.255.0

ip pim sparse-dense-mode

ip igmp join-group 239.10.10.10

speed 100

no cdp enable

end

!

Issue is show ip mroute does not show the incoming interface; instead it shows as NULL and the client is not receiving the multicasted video. (Attachede the show ip mroute result)

Tried the Following:

Configured the interfaces in the Dense mode,

Configured same router as the RP

Both the Client and the Server are pinging eachother and can ping to 239.10.10.10 also.

While connecting the Multicast Source and the Client back to back,cit is wokring fine. (We are using VLC 0.9.9 as the multicast Source and client)

Changed the Router ports and tried.

Please help to solve the issue.

Thanks in Advance !!!

Regards,

Akhilesh P K

Marwan ALshawi · ‎08-08-2011

your server supposed to send Mcast traffic on the group 239.10.10.10 and the client suuposed to join this group

not sure how ( software maybe )

but in anyway yo have to remove the bellow command from all the interfaces of your router

ip igmp join-group 239.10.10.10

this is just for testing you can let the interface to join a gorup

alos try if supported

ip multicast routing distributed

igmp snooping

HTH

Jon Marshall · ‎08-08-2011

Just a quick check.

VLC by default sets to the TTL to 1 for the multicast stream. This means it won't work across L3 boundaries ie. it will only work in the same vlan.

Can you check the TTL setting on VLC when you setup the stream and if it is 1 then increase it to 2 in your case as it only needs to go across one L3 hop.

*** Edit - Marwan is correct when he says if you are testing with VLC you do need the "ip igmp join-group ..." interface comands.

Jon

Akhileshpk_2 · ‎08-08-2011

Hi,

Thanks for your quick response...!!!

1. Enabled IGMP Snooping and tried - Same Result

2. IGMP-Group 239.10.10.10 command removed and tried - Same Result

3. VLC TTL made as more than 1 (2, 3 and 4) - Same Result

Please help to solve the issue.

Regards,

Akhilesh P K

Marwan ALshawi · ‎08-08-2011

please after you did this updates do clear ip mroute *

then capture debug ip mpack

then try your multicast and post the debug here

Akhileshpk_2 · ‎08-09-2011

Hi all,

After degrading the VLC version from 0.9.9 to 0.8.6, it is worknig fine !!!

Thanks for the support !!!

Akhil

Marwan ALshawi · ‎08-09-2011

thanks for the update

and dont forget to rate the helpful posts