02-20-2012 04:25 AM - edited 03-07-2019 05:02 AM
Hi,
I would like to make a design with 4 Nexus 5596UP. 2 of them equipped with Layer 3 Expansion Module so they can serve as core layer and the other 2 Nexus used as Layer 2 for aggregation server layer.
What I am ensure of is how the vpc and port-channel configuration should look like between the 4 nexus. What I was thinking is to run vpc between the 2 Nexus in the aggregation layer and between the 2 Nexus in the core layer. Than I was thinking of connecting each Nexus in the aggragtion layer to both Nexus in the core layer using port-channel and vice-versa.
I have made a drawing og the design I have described above:
Do you have any recommendations/comments or improments to this design?
Regards,
Laurent
02-20-2012 07:13 AM
Laurent, you can get inspiration in following example:
Topology is called back-to-back vpc - both peers in one vpc domain will have one virtual port-chanel to downstream switches, and same from downstream switches perspective.
Please remember one important restriction: VPC domain numbers must be unique within each vpc domain (pair o switches).
HTH,
Alex
02-21-2012 12:23 AM
Hi Alex,
Thanks a lot for replying to my post. It looks like that is what I am looking for. Instead of ussing 2 links to each pair, is it possible to bundle 4 links on each side like on this picture:
Is back-to-back the best practice design in my case?
Regards,
Laurent
02-21-2012 06:17 AM
You're right Laurent.
In your case it's best practice.
HTH,
Alex
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