[c-nsp] which IGRP?

[christian.macnevin at uk.bnpparibas.com]

Firstly, "IGP" - IGRP is an old IGP which isn't used anymore.

You need to use a proper IGP - this is the only way to have neighbouring 
devices dynamically recognise each other, and you need this so that you 
can build bgp relationships between loopback addresses.

This should all be covered in fairly entry-level Cisco documentation. Try 
looking at the CCNA libraries - this list is a little on the high end.

Cheers,
Christian.





Internet
cisco-nsp at jeffchan.com@puck.nether.net - 15/07/2005 12:02
 
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Subject:        [c-nsp] which IGRP?


We're finally adding a third and possibly fourth router to our
small network, and I'm asking for suggestions about which IGRP to
run.  We currently have a 7513/RSP4 as our main router.  It has
our two upstream connections.  We also have a 3640 at a public
peering point hearing routes from a few peers there and
announcing ours to them.  We're using iBGP between the 3640 and
7513, but with a third router, which we would be migrating one
uplink to, it seems we'd need to fully mesh and/or set up a route
reflector if we wanted to continue to use iBGP as our interior
protocol.

Instead of iBGP, should we use a routing protocol optimized
specifically for interior use such as EIGRP, OSPF, etc.?
Or can it be done satisfactorily with iBGP and a route reflector
setup?  (Naturally we're talking eBGP to our external peers.)

Is there a standard practice for this?   IOS is 12.3(13)
mainline everywhere.

Jeff C.
--
Jeff Chan
mailto:cisco-nsp at jeffchan.com
http://www.supranet.net/

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