Re: [Idr] why has 4096 bytes limit on BGP messages size?

Curtis Villamizar <curtis@occnc.com> Fri, 15 June 2007 05:20 UTC

Message-Id: <200706150521.l5F5LAM9001940@sailbum.orleans.occnc.com>
To: Vishwas Manral <vishwas.ietf@gmail.com>
From: Curtis Villamizar <curtis@occnc.com>
Subject: Re: [Idr] why has 4096 bytes limit on BGP messages size?
In-reply-to: Your message of "Thu, 14 Jun 2007 11:27:53 PDT." <77ead0ec0706141127i61017d2av74151c7dd4004044@mail.gmail.com>
Date: Fri, 15 Jun 2007 01:20:50 -0400
Cc: idr <idr@ietf.org>
Precedence: list
Reply-To: curtis@occnc.com
Errors-To: idr-bounces@ietf.org

In message <77ead0ec0706141127i61017d2av74151c7dd4004044@mail.gmail.com>
"Vishwas Manral" writes:
>  
> Its again a memory management issue of an implementation right. We
> could allocate a central pool and extract memory from there.
>  
> Thanks,
> Vishwas

Yes and no.  Dynamic allocation is a wonderful thing but you have to
allocate memory and post a read on every BGP session simultaneously.
There is no way to know which one will have updates to send next.  You
should post a big enough read that TCP and your BGP implementation can
operate efficiently if you instantaneously go from quiescent to a
torrent of BGP updates.

Curtis

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[Idr] why has 4096 bytes limit on BGP messages si… Fenggen Jia
Re: [Idr] why has 4096 bytes limit on BGP message… Tony Li
Re: Re: [Idr] why has 4096 bytes limit on BGP mes… Fenggen Jia
Re: Re: [Idr] why has 4096 bytes limit on BGP mes… Jeffrey Haas
Re: [Idr] why has 4096 bytes limit on BGP message… Enke Chen
Re: [Idr] why has 4096 bytes limit on BGP message… Pekka Savola
Re: Re: [Idr] why has 4096 bytes limit on BGP mes… Vishwas Manral
Re: [Idr] why has 4096 bytes limit on BGP message… Erblichs
Re: [Idr] why has 4096 bytes limit on BGP message… Danny McPherson
Re: [Idr] why has 4096 bytes limit on BGP message… Danny McPherson
Re: [Idr] why has 4096 bytes limit on BGP message… Erblichs
Re: [Idr] why has 4096 bytes limit on BGP message… Curtis Villamizar
Re: [Idr] why has 4096 bytes limit on BGP message… Curtis Villamizar
Re: [Idr] why has 4096 bytes limit on BGP message… Curtis Villamizar
Re: [Idr] why has 4096 bytes limit on BGP message… Pekka Savola
Re: [Idr] why has 4096 bytes limit on BGP message… Curtis Villamizar
Re: [Idr] why has 4096 bytes limit on BGP message… Curtis Villamizar
RE: [Idr] why has 4096 bytes limit on BGP message… Susan Hares
RE: [Idr] why has 4096 bytes limit on BGP message… Susan Hares
Re: Re: Re: [Idr] why has 4096 bytes limit on BGP… Fenggen Jia
Re: [Idr] why has 4096 bytes limit on BGP message… Tony Li
Re: [Idr] why has 4096 bytes limit on BGP message… Curtis Villamizar
Re: [Idr] why has 4096 bytes limit on BGP message… Vishwas Manral
RE: [Idr] why has 4096 bytes limit on BGP message… Bhatia, Manav (Manav)