03-31-2008 01:30 PM - edited 03-05-2019 10:05 PM
I am looking into the NME-XD-24ES-1S-P modules to interface a 3845 with two 3750 switches. The one question that I have has to do with the backplane.
Unless I read it wrong, the documentation seems to state the there is only a 1GB backplane connection between the switches and the 3845. Does anybody know if I read this wrong? If the backplane is the 32GB stackwise connection, I am sold but not if it is only a 1GB connection from the 3845 to the switches.
04-04-2008 11:34 AM
It is not possible to utilize 32 Gbps bandwidth for different switches/stacks as if they are individual entities, because you can use it by only redundant connection using stackwise ports within a single stack and not otherwise. Thus, you can use clusters within stacks but the 32 Gbic bandwisth will be within the specific stacks only.
04-04-2008 04:27 PM
The 1Gbps limitation is between the switch module on the router and the router itself (the NME interface's bandwidth), not between the router's switch module and other 3750 switches via Stackwise cables (only available with the NME-XD-24ES-1S-P[?]).
The 3845, not the switch module, is hard pressed to substain even 1 Gbps of bandwidth, so additional bandwidth to/from the 3845, whether internal or external, would be unused.
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: