[c-nsp] Card Throughput - 6148A-GE-TX

Pete Templin petelists at templin.org
Sun Jan 31 09:06:20 EST 2010


Matt Buford wrote:

> Each range of 8 ports (1-8, 9-16, 17-24, 25-32, 33-40, 41-48) has an ASIC.
>  Each ASIC can do a max of 1 Gb in each direction.  If all ports on a group
> of 8 were to upload and download, their combined throughput would be 1 Gb
> upload and 1 Gb download.  If all ports on the card were to upload and
> download at the same time, the combined throughput would be 6 Gb upload and
> 6 Gb download (1 Gb per group with 6 groups).

I've also heard that there's a 1Gbps limit on EtherChannels - apparently 
EtherChannel packets have to be sent to each ASIC, so building any 
EtherChannels on the card could be detrimental.

pt


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