Re: [nsp] BGP memory requirement increase with IOS 12.2?

From: Gert Doering (gert@greenie.muc.de)
Date: Tue Jun 26 2001 - 11:43:07 EDT


Hi,

On Tue, Jun 26, 2001 at 11:12:10AM -0400, Przemyslaw Karwasiecki wrote:
> Basically BGP router process on box running IOS 12.1 is holding
> ~45MB of memory, while on box working in comparable condition,
> but wth IOS upgraded to 12.2 the same BGP router process is holding
> ~73MB of memory. Is it normal and expected?
> In other words: Is it a feature, or is it a bug :-) ?

This is likely to be CEF (memory used by CEF is accounted to the BGP
process). And yes, this amount of memory seems to be "normal" for
a full BGP table.

With 12.0S, I have:

 - no CEF, NPE-225:
  84 0 139795568 47721452 58320988 0 0 BGP Router

 - with CEF, NPE-400:
  91 0 79328336 1014588 75063872 0 0 BGP Router

so those figures match what you observe.

(What BGP *does* with these amounts of memory hasn't been answered
yet - "show ip b su" adds up to only about half the amount of memory)

gert

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Gert Doering - Munich, Germany                             gert@greenie.muc.de
fax: +49-89-35655025                        gert.doering@physik.tu-muenchen.de



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