[AusNOG] back of envelope sizing calculations

[Tony]

Hi Michael,

Adding to the info Brent supplied, if you need 3x GE interfaces, then your best bet for the performance you need would be 3845 (has 2x GE built in, add another) or a 7200 + NPE-1G (has 3x GE on the NPE-1G).

If you want full BGP tables, then Cisco recommends a min of 512MB of RAM.

You'll probably find most people in a similar situation are using a 7200.


regards,
Tony.

--- On Thu, 5/3/09, Brent Paddon <brent.paddon at overthewire.com.au> wrote:

> From: Brent Paddon <brent.paddon at overthewire.com.au>
> Subject: Re: [AusNOG] back of envelope sizing calculations
> To: "Michael Bethune" <michael.bethune at australiaonline.net.au>
> Cc: ausnog at ausnog.net
> Date: Thursday, 5 March, 2009, 2:27 PM
> Michael,
> 
> This may help you :
> 
> http://4isp.ru/admin/images//pp/Doc/routerperformance.pdf
> 
> Brent
> 
> Brent Paddon
> 
> Director | Over the Wire Pty Ltd
> brent.paddon at overthewire.com.au
> | www.overthewire.com.au
> Phone: 07 3847 9292 | Fax: 07 3847 9696 | Mobile: 0400 2400
> 54 | Direct: 07 3503 4807
> 
> 
> 
> Michael Bethune wrote:
> > Hiya,
> >
> > Just doing some back of the envelope calculations and
> I was wondering if 
> > anyone had some ball park ideas?
> >
> > What kind of non-end of life Cisco router model could
> >  handle domestic and international BGP tables + 3
> GigE interfaces
> > peaking at 100Mb/s or so (where the back traffic is a
> third of that).
> >
> > Thanks
> >
> > Michael. 
> >