throughput in WS-x6700 modules - help

[tacisco]

I have a question.

I have a WS-X6548-GE-TX-45AF board: There are 48 ports. It has a throughput / traffic of 1 Gbps every 8 ports, that is, the 8 ports share a band of 1Gbps. I discovered this by performing tests.

However, I did not find this information anywhere in the DataSheet.

I have other boards:

- WS-X6704-10GE

-WS-X6708-10GE

- WS-X6724-SFP

I need to know the actual traffic capacity of each of these cards. I need to know if the ports share bandwidth (similar to the X6548 board).

The best thing is if I learn to look at this information in Datasheets. So I can analyze other models of board.

Could someone please help me?

[a.alekseev]

https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/product_data_sheet09186a00801dce34.html

http://mor-pah.net/2014/10/02/cisco-6500-line-card-throughput/

[tacisco]

a.alekseev, Thank you very much.

I'm beginning to understand.

One question: How do I find out how many ASICs there is a one module?

[a.alekseev]

just google it, something like WS-C6748 architecture
https://www.google.ru/search?q=WS-X6748+architecture&newwindow=1&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwi6zvCdxprcAhWHPZoKHXDrD8cQsAQINg&biw=1361&bih=885

[Joseph W. Doherty]

"However, I did not find this information anywhere in the DataSheet."

Hmm, I just quickly looked, and didn't find that noted either. The card is noted as 8 ports share a hardware queue and and a 1 MB buffer. Also that's it a CEF256 card (which means it has a least one 8 Gbps fiber connection).

The 3 other cards you've listed are all CEF720 cards, which means each card has dual 20 Gbps fabric connections. The 6808 is 2:1 oversubscribed unless you run it in performance mode. I recall (?) somewhere Cisco documents which 6408 10g port pairs share 10g.

I also suspect each bank of 24 ports, on the 6748, shares 20 Gbps.

Way back when, when there was also the 6702 card, it was noted it, but not the 6704, was true wire speed capable. This might be due to a slight bit of overhead on the 6704 needing more than the dual 20 Gbps fabric channels, and/or that a DFC (provides 48 Mpps - need 60 Mpps) doesn't guarantee wire rate for 40 Gbps.