[AusNOG] back of envelope sizing calculations
mmc at internode.com.au
Thu Mar 5 15:25:37 EST 2009
For "much faster VPN" read "much faster CPU".
Trying to think about too many things at once.
On 05/03/2009, at 2:50 PM, Matthew Moyle-Croft wrote:
> Skeeve's recommendation is a good one:
> 7206VXR-NPE-G1s are the swiss army knife - well debugged, well
> understood, easy to obtain parts new and after market and will be
> supported for a long time to come and easily handle full BGP tables.
> Even though they're no longer something we use in our core they are
> now excellent PE routers for terminating customer sessions or
> smaller LNSes etc. We've got a frightening number still humming
> away and unlikely to be replaced. Because of this Cisco are
> unlikely to EOL them for a LONG time to come (think of the ROI of
> that platform for them).
> (We've got many dozens - I wouldn't want to try and count - it'd
> take too long).
> The news G2s are nice as they have an extra GE port and much faster
> VPN BUT remember they need SFPs (SFP slots only for 2 of the ports).
> On 05/03/2009, at 2:15 PM, 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 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
>>> Just doing some back of the envelope calculations and I was
>>> 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
>>> AusNOG mailing list
>>> AusNOG at lists.ausnog.net
>> AusNOG mailing list
>> AusNOG at lists.ausnog.net
> Matthew Moyle-Croft Internode/Agile Peering and Core Networks
> Level 5, 162 Grenfell Street, Adelaide, SA 5000 Australia
> Email: mmc at internode.com.au Web: http://www.on.net
> Direct: +61-8-8228-2909 Mobile: +61-419-900-366
> Reception: +61-8-8228-2999 Fax: +61-8-8235-6909
> AusNOG mailing list
> AusNOG at lists.ausnog.net
Matthew Moyle-Croft Internode/Agile Peering and Core Networks
Level 5, 162 Grenfell Street, Adelaide, SA 5000 Australia
Email: mmc at internode.com.au Web: http://www.on.net
Direct: +61-8-8228-2909 Mobile: +61-419-900-366
Reception: +61-8-8228-2999 Fax: +61-8-8235-6909
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