N7k Interconnection between Multiple VDCs .

Hi
I have 2 N7Ks
N7K-1 have 2 VDCs, D1 and D2
N7K-2 have 2 VDCc S1 and S2
D1&D2 have vPC configured between them and S1&S2 also have vPCs b/w them.
What is the best practice to interconnect D1&D2 to S1&S2 with redundancy ? I am yet to see a Cisco Doc that discusses this design, Please let me know your suggestions.
TIA.

Hello, So then you could do this:
Physically:
D1 to S1
D1 to S2
D2 to S1
D2 to S2
(not including the VPC peer or keepalives)
1)
From N7K1 and 2 Core VDC's
Have 1 VPC to N7K1-Access VDC
Have 1 VPC to N7K2-Access VDC
This means that your core will have VPC's but your access will have port-channels to your core and not vpc's.
And then have your N7K2's / FEX attached to this access layer.
D1 and 2 to S1 - VPC 1 on CORE
D1 and 2 to S2 - VPC 2 on CORE
or
2)
The other way, which I haven't quite tried before, but no reason why it shouldn't work...
You have D1 and D2 provide one VPC (a) to S1 and S2
You have D1 and D2 provide one VPC (b) to S1 and S2
In this scenario you would have x2 VPC's on the core, and x2 VPC's on the access.
D1 to S2 - VPC1 - both sides
D2 to S1 - VPC1 - both sides
D1 to S1 - VPC2 - both sides
D2 to S2 - VPC2 - both sides
Just be sure to enable peer-switch, peer-gateway, ip arp synchronize for the VPC domain for efficiency
hth.

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Message was edited by: jfaughnan

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N7k Interconnection between Multiple VDCs .

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