[AusNOG] back of envelope sizing calculations

Julien Goodwin ausnog at studio442.com.au
Thu Mar 5 14:50:47 EST 2009


Or for probably around the same as the 3800 you can look at the Juniper
J-series whic I'm fond of these days, they handle multiple BGP feeds
just fine.

On 05/03/09 14:45, Skeeve Stevens wrote:
> 7200-G1 - 512mb mtp (max throughput)
> 7200-G2 - 1024mb mtp
> 
> They have 3 * GE
> 
> 2851 with an extra GE would be pushing it with 112mb mtp
> 
> 3825 - need two extra gig ports - 179 mtp
> 3845 - need two extra gig ports - 256 mtp
> 
> A G1 which can either be in 7200 form or 7301 form.
> 
> A G2 can be in 7204/6 form or 7201 form.
> 
> HWIC-GE cards are more expensive that PA-GE's.
> 
> My recommendation is a 7204VXR-NPE-G1 for cost, expandability (can go to 4 GE - maybe 5 if the bandwidth points aren't counted from slot 0 NPE), or a G2 if you can afford it.
> 
> 
> ...Skeeve
> 
> --
> Skeeve Stevens, CEO/Technical Director
> eintellego Pty Ltd - The Networking Specialists
> skeeve at eintellego.net / www.eintellego.net
> Phone: 1300 753 383, Fax: (+612) 8572 9954
> Cell +61 (0)414 753 383 / skype://skeeve
> --
> NOC, NOC, who's there?
> 
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> 
>> -----Original Message-----
>> From: ausnog-bounces at lists.ausnog.net [mailto:ausnog-
>> bounces at lists.ausnog.net] On Behalf Of Michael Bethune
>> Sent: Thursday, 5 March 2009 1:17 PM
>> To: ausnog at ausnog.net
>> Subject: [AusNOG] back of envelope sizing calculations
>>
>> 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.
>>
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