14 Jul 1998 11:21:29 -0700
Marc Greis <firstname.lastname@example.org> writes:
> Hi all,
> I have two small (?) questions:
> 1) I am still looking for a way to find out if a certain node is a leaf
> node in a multicast tree or to query multicast routing in general. If
> the '$routelogic lookup' function worked for multicast routing, it would
> be very simple, but it only seems to work for unicast and multipath.
> Is there any way to do that (I guess there has to be a way, or how else
> would packets 'know' that they have reached the end of a multicast
Leaves do not have any forwarding state. There could be a multicast
forwarding cache entry, but no active replicators.
> 2) It seems as if the classes 30 and 31 are 'reserved' for Prune
> packets in most multicast protocols. Are there other reserved classes
> like that? And if so, is there a list somewhere?
Since this is a hack, it is likely to change in the future. "class"
is the same as flowid.