[c-nsp] ingress vs egress queues

Phil Mayers p.mayers at imperial.ac.uk
Fri Mar 4 08:45:51 EST 2011


On 04/03/11 13:33, Nick Hilliard wrote:
>> Do you have a pointer to any docs on this?
>
> There are several ways of implementing buffering on a cut-thru switch.
> The N55k mechanism is documented here:
>
> http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9670/ps11215/white_paper_c11-622479.html
>
>
> The n5k/n55k implements virtual output queues. It's quite an elegant and
> conceptually simple method of dealing with the issue, but there are
> other mechanisms too.

Fascinating stuff - thanks for the info!


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