All things related to multicast

[Havard Eidnes <>]

Hi,

I've been in some off-line communication with some Cisco folks
trying to resolve this case, and the conclusions we've arrived at
are basically the following:

 o Don't always trust "mtrace" output to tell you the whole
   truth; instead check forwarding counts for S,G entries in your
   routers.  The "Prune sent upstream" appears to be an artifact
   caused by a lack of traffic from the source, and is indeed not
   caused by the router returning this flag.

 o The problem with the missing traffic from the sources in the
   accessgrid beacon group appears to lie upstream from NORDUnet;
   all the traffic visible on our border router with Abilene
   makes it to the recipient beacon(s) inside UNINETT.

Best regards,

- Håvard