All things related to multicast

[Amel Caldwell <>]

On Thu, 31 May 2001, Havard Eidnes wrote:

>> This customer is part of our Gigapop AS, but runs their own RP.
>
>That sounds like a somewhat strange configuration.
>

Not really.  They are a research group that is separate from a larger company.
Our Gigapop provided them with address space and uses a static route for them
rather than BGP peering to propagate a /27.  Also, I want them to be able to
do their own local multicast (i.e. 239/8 type stuff)  independent of the
Gigapop, but I need to provide them with external multicast.


>An alternative could be to use anycast-RP, so that you and them
>can share the RP address.  You would of course have to set up the
>appropriate MSDP peerings to make that work (in a mesh pattern?).
>
>> When I look at the router on my side, I see appropriate RPF
>> info, the MSDP session is up, but I don't see any entries in my
>> sa-cache or my mcache.
>
>Well, if the sources are not being accepted and advertised
>onwards via MSDP, you cannot expect other receivers to join
>towards the source, and that's probably the reason you see
>outgoing interface list: null.
>

I am now trying to find out why their local interface is pruning the local
hosts instead of forwarding their traffic as it should.

Amel

>Regards,
>
>- H?vard
>
>