Multicast over Gre back to back vpn

kennis1977 · ‎02-12-2012

Hi guys,

I'm trying to get multicast traffic over a back to back vpn,the vpn connection with tunnel interfaces is working and up... (unicast traffic is doing fine)

Now i tried to send multicast traffic over the link... I also configured EIGRP protocol (that also uses multicast hello packets)

This is working... I get updates..

Now i tried to send multicast traffic from client to client that are behind these routers.. I also configured

Ip multicast-routing and on all the interfaces ip pim sense-mode however... No multicast traffic from client to client..

What can be wrong? Or do i need some configuration more??

Thankssss

mudjain · ‎02-12-2012

Hello,

followin is the link that can help you probably:

http://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/V3PNIPmc.html#wp349808

Regards,

Mudit Jain

kennis1977 · ‎02-12-2012

Thanks for you're reply..

Looks like the ip pim sparse-mode will be enough to let the multicast traffic go to the client.

I tried this already but not working somehow..

The show ip igmp groups looks also be fine... I can see the 239.255.100.100 ip active

And also see the wihtin the show ip mroute also the 239.255.100.100

Any idea's left?

kennis1977 · ‎02-13-2012

nobody experience with multicast traffic??

kennis1977 · ‎02-13-2012

Ok... so i did a different test..

just use 1 router with 2 vlan's and 2 pc's....1 is streaming with vlc and the other one is trying to play it..

(works normally just fine on the subnet)

still see nothing.. i enabled both interface vlan's with the command ip pim sparse-dense mode and the global command

ip multicast-routing

im multicating on address:239.255.100.100:5004

when i first (before i stream) do a show ip mroute i see:

IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
       L - Local, P - Pruned, R - RP-bit set, F - Register flag,
       T - SPT-bit set, J - Join SPT, M - MSDP created entry,
       X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
       U - URD, I - Received Source Specific Host Report,
       Z - Multicast Tunnel, z - MDT-data group sender,
       Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags: H - Hardware switched, A - Assert winner
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 239.255.255.250), 00:25:30/00:02:43, RP 192.168.200.1, flags: SJC
Incoming interface: Tunnel0, RPF nbr 192.168.200.1
Outgoing interface list:
Vlan10, Forward/Sparse-Dense, 00:14:28/00:02:34

(*, 239.255.100.100), 1d01h/00:02:52, RP 192.168.200.1, flags: SPF
Incoming interface: Tunnel0, RPF nbr 192.168.200.1
Outgoing interface list: Null

(*, 224.0.1.39), 1d01h/stopped, RP 0.0.0.0, flags: DC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan11, Forward/Sparse-Dense, 1d01h/00:00:00
Tunnel0, Forward/Sparse-Dense, 1d01h/00:00:00

(192.168.200.1, 224.0.1.39), 1d01h/00:02:40, flags: T
Incoming interface: Tunnel0, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan11, Forward/Sparse-Dense, 1d01h/00:00:00, A

(*, 224.0.1.40), 1d07h/stopped, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan11, Forward/Sparse-Dense, 1d06h/00:00:00
Tunnel0, Forward/Sparse-Dense, 1d06h/00:00:00

(192.168.200.1, 224.0.1.40), 1d01h/00:02:22, flags: PLT
Incoming interface: Tunnel0, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan11, Prune/Sparse-Dense, 1d01h/00:02:22, A

the only strange thing is the incmoing interface is still tunnel0 but the flags are SPF

when i start the stream it changed to:

IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
       L - Local, P - Pruned, R - RP-bit set, F - Register flag,
       T - SPT-bit set, J - Join SPT, M - MSDP created entry,
       X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
       U - URD, I - Received Source Specific Host Report,
       Z - Multicast Tunnel, z - MDT-data group sender,
       Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags: H - Hardware switched, A - Assert winner
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode

(*, 239.255.255.250), 00:27:36/00:02:39, RP 192.168.200.1, flags: SJC
Incoming interface: Tunnel0, RPF nbr 192.168.200.1
Outgoing interface list:
Vlan10, Forward/Sparse-Dense, 00:16:34/00:02:30

(*, 239.255.100.100), 1d01h/00:02:30, RP 192.168.200.1, flags: SJCF
Incoming interface: Tunnel0, RPF nbr 192.168.200.1
Outgoing interface list:
Vlan10, Forward/Sparse-Dense, 00:01:29/00:02:30

(*, 224.0.1.39), 1d01h/stopped, RP 0.0.0.0, flags: DC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan11, Forward/Sparse-Dense, 1d01h/00:00:00
Tunnel0, Forward/Sparse-Dense, 1d01h/00:00:00

(192.168.200.1, 224.0.1.39), 1d01h/00:02:34, flags: T
Incoming interface: Tunnel0, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan11, Forward/Sparse-Dense, 1d01h/00:00:00, A

(*, 224.0.1.40), 1d07h/stopped, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan11, Forward/Sparse-Dense, 1d06h/00:00:00
Tunnel0, Forward/Sparse-Dense, 1d06h/00:00:00

(192.168.200.1, 224.0.1.40), 1d01h/00:02:11, flags: PLT
Incoming interface: Tunnel0, RPF nbr 0.0.0.0
Outgoing interface list:
Vlan11, Prune/Sparse-Dense, 1d01h/00:02:11, A

the flags are now:SJCF

so looks like something is changing... alse the C of connected..

but still now stream playing..

how come??

kennis1977 · ‎02-15-2012

no one.. can help?

kennis1977 · ‎02-18-2012

Ok... i give up!!! nothing works no one can help...

Also i simple test with just one router with two interfaces and ip pim dense-mode doesn't work!!

can't find anything what could be configured wrong..... als with debug ip mpacket nothing...

only thing is when i do a ping to the multicast address i see traffic coming in... but not when i stream it..(i can see the stream on my wireshark trace) strange strange strange........