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List:       quagga-dev
Subject:    [quagga-dev 8676] Re: multicasting and MBGP in Quagga.
From:       David Lamparter <equinox () diac24 ! net>
Date:       2011-04-07 13:09:00
Message-ID: 20110407130900.GA499209 () jupiter ! n2 ! diac24 ! net
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On Thu, Apr 07, 2011 at 12:49:48PM +0000, Huq A. 1 wrote:
> First of all, what is the inter-relation between multicasting and MBGP?
> Because in the "http://www.quagga.net/docs/quagga.html" page, I see a line,
> "When it is used for exchanging multicast routing information it is called MBGP."

MBGP is used to exchange the underlying (unicast) prefix information
used for reverse path lookups in multicast routing. It constructs a
separate RIB that works exactly like the unicast RIB and usually has
similar information.

MBGP is _NOT_ a multicast routing protocol. Google for PIM-SM, CBT,
MSDP, etc.

> Can anyone provide any sample configuration of MBGP in quagga?

No, since currently, without BalajiG's patches, there is no way to
actually use that secondary RIB in any multicast routing daemon.
Basically, Quagga only has pass-through support for this information
as it is.


-David

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