[29254] in North American Network Operators' Group
Re: exchange point media (was: Re: MAE-EAST Moving? ...)
daemon@ATHENA.MIT.EDU (Simon Lockhart)
Thu Jun 15 04:19:54 2000
To: John Fraizer <nanog@EnterZone.Net>
Cc: Mikael Abrahamsson <swmike@swm.pp.se>, nanog@merit.edu
In-Reply-To: Your message of "Thu, 15 Jun 2000 02:47:42 EDT."
<Pine.LNX.3.96.1000615024452.20825A-100000@Overkill.EnterZone.Net>
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Date: Thu, 15 Jun 2000 08:33:08 +0100
Message-Id: <3766.961054388@sunf25>
From: Simon Lockhart <simonl@rd.bbc.co.uk>
Errors-To: owner-nanog-outgoing@merit.edu
>The other question is what is the actual capability of the GigaE cards in
>a cisco box? I have been told (not played with GigaE on cisco yet and for
>that matter, neither has the person who told me) that it is limited to
>around 400Mb/s.
On a 7xxx Cisco, yes, it's limited to 400Mb/s, due to limitations on the
interface to the backplane (or VIP2 in the 75xx).
On the Cisco 12000, the backplane interface is 2.5Gb/s, so the GigE cards
can run at full speed.
Interestingly, no-one seems to have mentioned LINX yet in this discussion.
LINX have been offering GigE connections to their switch for over a year
now as a trial, and in the last few months they are now "live". There are
apparently some LINX members pushing a few 100Mb/s through their GigE
connection.
E.g. see http://stats.sjc.above.net/traffic/lhr/linx-1.html
Simon
--
Simon Lockhart | Tel: +44 (0)1737 839676
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