From: Church, Chuck (cchurch@wamnetgov.com)
Date: Thu Mar 18 2004 - 00:17:04 GMT-3
I've seen 2600s with 32 megs of RAM handle 1400 OSPF inner and intra-area routes without issue. Don't remember the memory statistics though. 4000 shouldn't be an issue with even 32. Looking at:
Route Source Networks Subnets Overhead Memory (bytes)
connected 1 0 132 144
static 1 0 64 144
ospf 1 21 61 5248 11808
from a router, you can see that each OSPF route uses under 200 bytes. 4000 routes is still under a megabyte. There are other limiting factors to why OSPF won't scale to a whole internet table such as number of neighbors and links, but with just 4000, I don't think you'll have a problem.
Chuck Church
Lead Design Engineer
CCIE #8776, MCNE, MCSE
Wam!Net Government Services - Design & Implementation Team
13665 Dulles Technology Dr. Ste 250
Herndon, VA 20171
Office: 703-480-2569
Cell: 703-819-3495
cchurch@wamnetgov.com
PGP key: http://pgp.mit.edu:11371/pks/lookup?op=index&search=cchurch%40wamnetgov.com
> -----Original Message-----
> From: Richard Dumoulin [mailto:richard.dumoulin@vanco.es]
> Sent: Wednesday, March 17, 2004 1:48 PM
> To: MADMAN
> Cc: ccielab@groupstudy.com
> Subject: RE: OSPF routes
>
>
> But the 90000 routes were applicable to BGP right. For OSPF it may be
> different, I think it is less robust than BGP,
>
> --Richard
>
> -----Mensaje original-----
> De: MADMAN [mailto:dmadlan@qwest.com]
> Enviado el: miircoles, 17 de marzo de 2004 18:18
> Para: Richard Dumoulin
> CC: ccielab@groupstudy.com
> Asunto: Re: OSPF routes
>
>
> Richard Dumoulin wrote:
>
> > How can I know if a 2611 with 128 M of RAM can hold 4000 routes ?
>
> Since 128M or RAM was enough for full routing not too long ago,
> roughly 90K routes, 4K should be no problem.
>
> Your bigger problem is stuffing 128M into your 2611!!!
>
> Dave
> >
> > Regards
> >
> > --Richard
> >
> >
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> --
> David Madland
> CCIE# 2016
> Sr. Network Engineer
> Qwest Communications
> 612-664-3367
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