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Need vPC Help ASAP

visitor68
Level 5
Level 5

Folks:

I have ports 17-20 on each non-Cisco access switch configured to be part of a LACP LAG.

I have a vPC peer Link configured. vPC is up.

Do I have to configure ports 13 and 14 on each of the N5K switches to be part of a port-channel? And then also ports 15 and 16 from each N5K to be part of another port-channel to match the corresponding ports on the access switches?

In other words, I mean something like port-channel 50 on N5K1 and N5K2 to include ports 13 and 14 - a total of 4 ports

AND ALSO

port-channel 60 on N5K1 and N5K2 to include ports 15 and 16 - a total of 4 ports again.

I tried doing what I just described and the vPC would not come up. All the member physical ports remained in the (I) state. "I" for Individual, meaning they are not part of a port channel (P).

THANKS!

3 Replies 3

Jerry Ye
Cisco Employee
Cisco Employee

You can create the port-channel in the following order for both N5K1 and N5K2:

interface e0/13 - 14

switchport

channel-group 50 mode active

interface po50

switchport mode trunk

switchport trunk allowed vlan x,y,z

vpc 50

interface e0/15 - 16

switchport

channel-group 60 mode active

interface po60

switchport mode trunk

switchport trunk allowed vlan x,y,z

vpc 60

After you are done and no shut all the ports, use show vpc to verify the output.

HTH,

jerry

Jerry, thank you.

I'll get back to you on whether our configs are indeed what you show or whether we are missing something.

Are there any requirements with regard to the non-cisco switches in terms of technology or protocols that must be supported? 

In term of port-channel. No, all it needs is the 3rd party device to negotiate with the Nexus via LACP.

Regards,

jerry