soft-reconfig eats memory and seems to lead to more rapid fragmentation
and memory exhaustion, especially if you use it on sessions with full
or large numbers of routes (sprint, uu, etc) or the sessions are
unstable.
It's fairly safe to use on customer sessions or small-time peering
sessions, but you may want to note that with late IOS releases,
you can trigger your peer to resend their routes rather than trying
to remember the ones you didn't like. Doesn't give you the ready
reference of what you're filtering, but you can always turn on
debug ip bgp updates if you're desparate. 8-)
George
> From cisco-nsp-request@puck.nether.net Fri Nov 10 06:46:21 2000
> Date: Thu, 9 Nov 2000 21:18:43 -0500
> X-From_: mr_list@netzero.net Thu Nov 9 21:18:42 2000
> Received-Date: Thu, 9 Nov 2000 21:18:42 -0500
> X-Sender: mr_list@pop.netzero.net
> Old-Date: Thu, 09 Nov 2000 18:22:49 -0800
> To: cisco-nsp@puck.nether.net
> From: Ramin K <mr_list@netzero.net>
> Subject: soft-reconfiguration inbound question
> In-Reply-To: <200011092241.OAA01449@zed.isi.edu>
> References: <20001109171529.L11230@datafoundry.net>
> Old-X-Envelope-To: cisco-nsp
> Resent-From: jared@puck.nether.net
> Resent-Date: Fri, 10 Nov 2000 06:36:52 -0500
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>
> I just got off the phone with one of our peers. They had a route map that
> was eating some of our announcements. In the course of troubleshooting the
> tech could not do a sho ip bgp nei xxxx received-routes to look at the
> routes before they were processed by a route-map or filter.
>
> gw13#sho ip bgp neigh xxx.x.xx.x received-routes
> % Inbound soft reconfiguration not enabled
>
> Is there any reason to not configure soft-reconfig on a BGP session?
>
> Ramin
>
>
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