3560G Catalyst switches

[tech]

I have read that the 3560G series has an oversubscription ratio of 52 Gbps to 32 Gbps on the backplane. Is there documentation that states how many ports are in each port group and what the non blocking connection to the backplane per port group is?

Thanks,

RJ

[jackyoung]

AFAIK the 52Gbps is combined with 48 x built-in 1Gbps port + 4 x SFP = 52Gbps.

Where the 32Gbps is the forwarding bandwidth in the whole 3560(G).

I can't find such info. that describes the ratio or port group in 3560(G).

http://www.cisco.com/en/US/products/hw/switches/ps5528/products_data_sheet09186a00801f3d7d.html

Hope this helps.

[tech]

That is what I read. I was hoping for information similar to the 4500 documentation. Port groups of 8 (1-8, 9-16, etc) have a 1 Gbps connection to the backplane. This helps to plan server order on the switch.

Thanks for the post.

[jackyoung]

IC. I believe those port are not grouped in 3560G as similiar as 4500. Not all models group the port and share the bandwidth.

The reason of 4500 group the port that is because the bandwidth per module is limited, so group the port and share the bandwidth. In 3560G, all ports share the whole backplane, so I believe there is no such limitation.

Or may be someone in Cisco can tell.