[isp-bgp] giwwytea /var/www/html/bluegrassmike.com 1007 1007 delete edit

["Ejay Hire" <ejayhire@...>]

X-OriginalArrivalTime: 12 Mar 2006 16:30:46.0557 (UTC) FILETIME=[50BC7CD0:01C645F2]
Date: 12 Mar 2006 08:30:46 -0800
tandmlogs
	qualno
Date: Sun, 12 Mar 2006 10:30:43 -0600
Mime-Version: 1.0
Content-Type: text/plain; format=flowed

>Subject: Re: Cisco 7204VXR/NPE-400
>From: "David J. Hughes" <bambi@....au>
>Date: Sun, 12 Mar 2006 17:46:51 +1000
>X-Message-Number: 1
>
>On 10/03/2006, at 3:06 AM, Sylvain Coutant wrote:
>
> > Hi,
> >
> > Can someone here give some hints about performance a NPE-400 can
> > achieve with 2 or 3 full bgp feeds plus peerings ? How many routes can
> > it handle at most ?
>
>Do you want performance figures or the number of routes it can hold?
>Performance numbers are here :
>
>http://www.cisco.com/warp/public/765/tools/quickreference/
>routerperformance.pdf
>
>Number of prefixes is a function of the amount of RAM you have in the
>box and has no impact on the packet forwarding performance.
>
>David

A minor addition.

Total number of routes doesn't directly affect forwarding performance, but 
you will see a marked performance hit in the forwarding plane while the 
router is converging.  The faster the links to your peers, the more marked 
the effect.

An npe-400 will hold 512Mb of RAM.  A single feed on my router is ~165,000 
routes and together with the (huge) IOS (i have to run to support ssh and 
llq qos) uses  170Mb each additional feed adds about 20mb each.

if all of your peers support route refresh (most do), you don't need 
neighbor x.x.x.x soft reconfig inbound, which helps with the memory 
requirements.

ejay hire
hostsouth.com

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