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New Member

2 N7K, 4 N5K, 8 N2K - double sided VPC

Hello All,

I have a clarification with respect to double sided VPC.

Following are the details:-

1) Nexus 7K - 2 numbers

2) Nexus 5K - 4 numbers

3) Nexus 2K - 8 numbers

The 2K will be connected to 5Ks and 5Ks to the 7Ks. We plan to use double sided VPC and enhanced VPC design. The NXOS on the 5Ks are 5.3(1)N2.

Now in case of two N7Ks and two N5Ks, there is documented case for double sided VPC configuration i.e. the same portchannel everywhere between N7Ks and N5Ks

N7K1 --->N5K1

N7K1---->N5K2

N7K2 --->N5K1

N7K2---->N5K2

i.e

interface <int>

  channel-group 11 mode active

interface po 11

  switchport

  switchport mode trunk

  switchport trunk allowed vlan a,b,c

  vpc11

In our case, in addition to the below

N7K1 --->N5K1

N7K1---->N5K2

N7K2 --->N5K1

N7K2---->N5K2

we also have

N7K1---->N5K3

N7K1---->N5K4

and

N7K2---->N5K3

N7K2---->N5K4

So in this scenario can we use the port channel template that was shown above? Or in other words the double sided VPC design that was valid for two N7Ks and two N5Ks, can it be valid/extended for lets say total of four(or 'n' number) of N5Ks.

I hope the question is clear.

Thanks in advace.

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

2 N7K, 4 N5K, 8 N2K - double sided VPC

Sorry for the confusion, let me clarify it a bit more:

N7K1 & 2 <-> N5K1 & 2 - Po11, vpc 11

N7K1 & 2 <-> N5K3 & 4 - Po12, vpc 12

N7K1 & 2 vpc domain 1 (let's say)

N5K1 & 2 vpc domain 2

N5K3 & 4 vpc domain 3

HTH,

jerry

4 REPLIES
Cisco Employee

2 N7K, 4 N5K, 8 N2K - double sided VPC

Except you need to use a different vpc number. For example, N7K1/2 <-> N5K1/2 will be vpc11. N7K1/2 <-> N7K3/4 will be vpc 12.

HTH,

jerry

New Member

Re: 2 N7K, 4 N5K, 8 N2K - double sided VPC

Thank you for the reply. So:-

N7K1 --->N5K1 VPC 11

N7K1---->N5K2 VPC 11

N7K2 --->N5K1 VPC 11

N7K2---->N5K2 VPC 11

N7K1---->N5K3 VPC 12

N7K1---->N5K4 VPC 12

N7K2---->N5K3 VPC 12

N7K2---->N5K4 VPC 12

N7K Domain ID 1

N5K Domain ID 2

ALL portchannels will be as lets say Po10..

Is the above correct?

Regards!!

Cisco Employee

2 N7K, 4 N5K, 8 N2K - double sided VPC

Sorry for the confusion, let me clarify it a bit more:

N7K1 & 2 <-> N5K1 & 2 - Po11, vpc 11

N7K1 & 2 <-> N5K3 & 4 - Po12, vpc 12

N7K1 & 2 vpc domain 1 (let's say)

N5K1 & 2 vpc domain 2

N5K3 & 4 vpc domain 3

HTH,

jerry

New Member

2 N7K, 4 N5K, 8 N2K - double sided VPC

Thanks a lot

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