WS-X6816-10GE over-subscription ? line rate ? please help !

[Shlomy Maron]

Hi,

I didn't understand the documentation - what is the throughput of WS-X6816-10GE with CFC sub module ?

what would I gain if I buy DFC sub module ?

what is the effect of the Port-Grouping ? what are the Port-Grouping ?

I have the following Issue - ports 22 to 30 are in use , while most of them are in 50-70% usage of bandwidth.

one of them complained about packet loss when receiving multicast stream.

the way I've solved it was to move his port to 40, while 30-48 are empty.

I've tested it several times with the same cable - and it is the right solution.

(the multicast stream is incoming from another line card)

so I must ask - isn't WS-X6816-10GE line rate module ?

please help with some explanation 

[Madhukrishnan Gopinathan Nair · Accepted solution]

Hello Shlomy,

These cards are 4:1 oversubscribed by default.

If you want to use them at line rate you need to use that in Performance mode (disabling 3 ports in a port group and using only 1)

http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/data_sheet_c78-451794.html

Thanks,
Madhu

[Madhukrishnan Gopinathan Nair · Accepted solution]

One more useful link

http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/qa_c67-362061.html