VPC on Nexus 2Ks

[zyang]

So my setup is a VPC with 5Ks and with each 2K with uplinks to only one 5K.  Is it possible for servers to port-channel to both 2Ks for a VPC?  Or is that only possible if the 2Ks have a VPC back to the 5Ks?

[Reza Sharifi]

That would work only if each 2k was connected to both 5ks (VPC).

HTH

[mlund · Accepted solution]

I think that would work. depending on the fex type.

From NX-OS 4.2(1)N1(1), it is posible to connect a server with vpc to two fexes that  are single attached.

From NX-OS 5.1(3)N1(1), it is posible to connect a server with vpc to two fexes that are dual attached with vpc, this is called enhanced vpc.

see this for example

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/layer2/521_n1_3/b_5k_Layer2_Config_521N13/b_5k_Layer2_Config_521N13_chapter_0110.html#concept_4DB9D39D3A2E4C2DBA631257BC6A5C5E

/Mikael

[zyang]

Thanks for the handy info!