RE: bgp route advertisment , particularly aggregate/summary to

Thanks Jochen, It wasn't in the bgp...the (3) subordinate 172's/24 were in
the igp... so with that, I could have used a network statement in bgp and
got them inserted that way, then used the aggregate which would have then
acted upon them. But how would I have directed that aggreagate at only one
of my igbp neighbors and not all of them ?

Redis from igp to bgp and vice versa wasn't permitted in that task

Aaron

-----Original Message-----
From: Jochen Bartl [mailto:jochen.bartl_at_gmail.com]
Sent: Saturday, March 10, 2012 2:02 PM
To: Aaron
Cc: 'CCIE GROUPSTUDY'
Subject: Re: bgp route advertisment , particularly aggregate/summary to one
neighbor

Hi Aaron,

you could use the aggregate-address command. It requires that at least one
component subnet of that aggregate is in the BGP table, like you have
already mentioned. That could be accomplished by using the network or
redistribution command, or by just receiving that route from another BGP
speaker.

You can find it in the documentation here:

IP Routing: BGP Configuration Guide, Cisco IOS Release 12.4T
-> Configuring a Basic BGP Network
-> Examples Aggregating Prefixes Using BGP

http://www.cisco.com/en/US/docs/ios-xml/ios/iproute_bgp/configuration/12-4t/
irg-basic-net.html#GUID-0ADA5EC1-2D67-4D09-9A6B-7A8E76C2B6ED

Best regards,

Jochen

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Received on Sat Mar 10 2012 - 14:10:35 ART