It's an interesting question. IOS *has* to store more information
when soft-reconfig is enabled, the question is how selective it
is, and if/when it gives it back. I think to really resolve the
issue you might have to try removing and replacing BGP sessions
or trying it one way, rebooting, and trying it the other way.
Either that or hope of of the Cisco whizzes wants to take about
data structures...
George
> From gert@greenie.muc.de Thu May 31 12:29:51 2001
> Date: Thu, 31 May 2001 18:30:17 +0200
> From: Gert Doering <gert@greenie.muc.de>
> To: George Robbins <grr@shandakor.tharsis.com>, jared@puck.nether.net,
> kf@reign.sk
> Cc: cisco-nsp@puck.nether.net
> Subject: Re: Full BGP and memory
> References: <200105311601.MAA17037@shandakor.tharsis.com>
> In-Reply-To: <200105311601.MAA17037@shandakor.tharsis.com>; from George Robbins on Thu, May 31, 2001 at 12:01:37PM -0400
> X-mgetty-docs: http://alpha.greenie.net/mgetty/
>
> Hi,
>
> On Thu, May 31, 2001 at 12:01:37PM -0400, George Robbins wrote:
> > Avoid "expensive" BGP options like "soft reconfig", "bgp multipath" or
> > "dampening" which can increase the size of bgp tables. Don't run an
> > IGP unless you need one. 8-)
>
> One question on "soft reconfig". I'm one of the people that have problems
> with their 7206 and 128 Mb RAM - on both "full" BGP peers (one internal,
> one external) "soft reconfig" has been switched off, but didn't bring
> any memory benefits (!).
>
> I have a number of "small" peers, that *do* use "soft reconfig".
>
> Is it possible that once you switch on "soft reconfig" for any peer
> it will eat up memory for *all* BGP entries? (This is just wild
> speculation, but this is the only way I could explain why turning off
> the "soft in" on the full eBGP peer didn't change anything).
>
> gert
> --
> USENET is *not* the non-clickable part of WWW!
> //www.muc.de/~gert/
> Gert Doering - Munich, Germany gert@greenie.muc.de
> fax: +49-89-35655025 gert.doering@physik.tu-muenchen.de
>
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