[Xorp-users] Multicast problem

[Pavlin Radoslavov]

> source------(R1)-------destination
> 
> xorp is running on R1, pimsm, igmp, mfea4, fea and fib2mrib are enabled.
> 
> I am using VLC to send a multicast traffic but nothing is forwarded to  
> the destination.
> Everything seems to be good in the configuration and IGMP Membership  
> Reports and PIM Hello are received in the xorp log messages.
> 
> R1 is the RP, is this a problem ? (I configured it statically)
> Should I use another router for the RP ? I mean, as :
> 
> source----(R1)------(R2=RP)-------destination

Static RP is fine and actually recommended for your setup.
And no, there is no need for a second router.

Two of the most frequent issues are:

1. Is the TTL of the sender's data traffic large enough?
   By default the TTL is 1 so the data traffic won't be forwarded.

2. Are there any firewall rules that might affect the multicast
   forwrading in any way (e.g., rules that filter the IGMP messages,
   etc).

If the issue is not one of those two, then please send your XORP
configuration and the output of the following xorpsh commands:

show igmp group
show pim join

Regards,
Pavlin