nanog mailing list archives

Re: Native Multicast (Was: Re: Contest! )


From: jhall () UU NET (Jeremy Hall)
Date: Tue, 26 Aug 1997 07:56:08 -0400 (EDT)

My understanding is that there are sync problems with deploying mcast
native. Most notedly when BGP uses memory and cpu and then
pruning/mrouting also wishes to use the cpu. I haven't personally
experimented with this, but have heard interesting stories about egress
problems near borders.

_J

Robert Laughlin said:

I am also considering enabling multicast routing, I would appreciate
hearing more about this as well.

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On Mon, 25 Aug 1997, Eric Kozowski wrote:

PS: The real prize should go to the *next* person to post useful technical
content.

OK, I'll take a stab at it, although it'll be in the form of a technical
question, which will hopefully draw technical content/answers.

I'm getting ready to run some native multicast on our backbone, mainly as
an experiment in replacing our existing set of DVRMP/MRouted tunnels.

Equipment is cisco 7XXX and 4500, with a 2501 CPE router (my home
connection).  Most are running some flavor of 11.2, with one or two still
running 11.1.

I'm looking for tips and suggestions from folks who are actually running
native multicast in a cisco environment.

While I've been getting help from Dave Meyer (Thanks, Dave!), I figure that
others could benefit from the same information, hence my posting here.

-Eric






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