Advertising a more specific subnet(/32) of a connected

From: Dinesh Patel <jedidinesh_at_googlemail.com>
Date: Sat, 21 Jan 2012 00:04:24 +0000

Hi Group,

I wonder if someone can help me with a relatively simple BGP scenario.

I have advertised a connected interface /24(10.1.2.0/24) into BGP and
aggregated it to a /16 (10.1/16) BGP prefix.

So the connected interface is /24 (10.1.2.0/24)
In BGP it is advertised as a /16 (10.1/16) aggregate to a peer.

I now want to advertise a host on this connected interface as a /32
(10.1.2.99). I can use an unsuppress map for the relevant peer. My problem
is odd, how do I get the connected interface host /32 (10.1.2.99) on this
connected interface into BGP?

I first tried using a /32 (10.1.2.99) point to NULL0 but this dropped all
the traffic as it is a connected interface.

I guess I could use a /32 (10.1.2.99) pointing to the local interface
(Gig1/1) instead of the NULL0? And then use a network statement to
advertise this into BGP.

Any suggestions?

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Received on Sat Jan 21 2012 - 00:04:24 ART

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