[c-nsp] ASIC to switch port mapping

Jeff Kell jeff-kell at utc.edu
Fri Sep 10 18:27:52 EDT 2010


 On 9/10/2010 5:47 PM, Vincent Aniello wrote:
> Any recommendations on a switch with larger buffers?  I would like to
> stick with the 1U form factor.  
>
> Also, are you saying that the microbursts cause the switch to exceed 1Gb
> port speed which causes the drops?  Cisco claims that the
> WS-C3560E-24TD-E switch has a 128-Gbps wire rate non-blocking switching
> fabric capacity.  I may be oversimplifying this, but to me, Cisco's
> claim implies that I should be able to run every port on this switch
> simultaneously at a full 1Gb in both directions.
>

Stick one 100Mb or 10Mb device on it and all those bets are off.  It's still
"store-and-forward" and you can only buffer 1Gb-input-to-less-Mb-output for so long.

Jeff


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