Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Sup 720 Fabric questions

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

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Sup 720 Fabric questions

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

5 REPLIES

Re: Sup 720 Fabric questions

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

New Member

Re: Sup 720 Fabric questions

Of course

That actually makes perfect sense now

thanks a bunch !!

New Member

Re: Sup 720 Fabric questions

Actually....

if Full Duplex is in the question then a 48 x 1000 Mbps would need 96 Gbps not 80 ??

Purple

Re: Sup 720 Fabric questions

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 .

New Member

Re: Sup 720 Fabric questions

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

129
Views
0
Helpful
5
Replies
CreatePlease to create content