RE: [nsp] Gigabit Ether Channel on Cisco 12000s

From: Chris Whyte (cwhyte@microsoft.com)
Date: Thu Jul 18 2002 - 16:07:06 EDT


>
> On Thu, Jul 18, 2002 at 08:22:30PM +0200, Mikael Abrahamsson wrote:
> > On Thu, 18 Jul 2002, Clinton Work wrote:
> > > Anybody heard any details about Cisco supporting Gigabit
> Ether Channel
> > > on the Cisco 12000 3-Port GigE line cards?
> >
> > I have asked the question to my cisco rep and the answer was "no".
> >
> > Multipath OSPF or alike works though.
>
> Note also that the card in question is constrained to 2.4G
> of throughput (in theory, I doubt you'll get that much out of it), so
> trying to balance more than two GigE links on it may result in a
> nasty surprise.

It's actually a bit more than that. Remember, the interconnect from the
LC to the fabric is 5Gbps (including overhead). The overhead varies, of
course, due to cellification but you can actually get around 2.8Gbps to
possibly 3.0Gbps (subtracting overhead), if I remember correctly.

Thanks,

Chris

>
> --msa
>
>



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