03-27-2006 12:24 AM - edited 03-03-2019 02:29 AM
Hi,
If you use a 6509-E with a Sup 720 this gives you a 720 Aggregate switch fabric which is broken down across all of teh 9 slots. However each slot only has 2 x 20 Gbps interfaces, so if you plugged in a 48 10/100/1000 you will not be able to get the full 48 Gbps throughput.
I know it is probably impossible to generate so much traffic but i am curious as the modules are marketed as non-blocking?
does anybody have some infor on this
Thanks
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03-27-2006 01:12 AM
Fabric channels run at 20 Gbps Full Duplex, so 20 Gbps in / 20 Gbps out, so the claim is 40 Gbps in full duplex and 80 Gbps/slot with dual fabric channels
Search for 80 Gbps:
http://www.cisco.com/en/US/products/hw/modules/ps4835/products_data_sheet09186a00801dce34.html
03-27-2006 01:12 AM
Fabric channels run at 20 Gbps Full Duplex, so 20 Gbps in / 20 Gbps out, so the claim is 40 Gbps in full duplex and 80 Gbps/slot with dual fabric channels
Search for 80 Gbps:
http://www.cisco.com/en/US/products/hw/modules/ps4835/products_data_sheet09186a00801dce34.html
03-27-2006 02:32 AM
Of course
That actually makes perfect sense now
thanks a bunch !!
03-27-2006 04:09 AM
Actually....
if Full Duplex is in the question then a 48 x 1000 Mbps would need 96 Gbps not 80 ??
03-27-2006 04:35 AM
I believe this only applies if you are running fabric enabled cards like dfc3's , if you are running older cards this thruput doesn not apply .
03-27-2006 07:21 AM
Even if the card is fabric enabled with 48 x 1000 Mbps ports you still only have 2 x 20 Gbps connections for each module
+(i have just found out) access to the shared 32 Gbps Bus
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