Nexus9K line card N9K-X9432PQ issue with vpc peer-link

[Sunshine East]

Hi there, 

I am wondering if anyone has configured the 40G line card N9K-X9432PQ with port-channel or vpc-peerlink. I noticed that it requires 'no buffer boost' command and without it you cannot create a port-channel. Does it cause any issue with vpc peer-link or any other network performance? If you have done it (PC, vPC peer-link) succesfully please share your experience. 

[balaji.bandi]

I do not see any issue here.

becuase of line card you need to add that command.

Line cards like the Cisco Nexus 9636PQ and similar, do not offer the buffer-boost feature.

[Sunshine East]

Thanks for your response, Balaji. Do you have the vpc peer-link configured on this card or it is just your suggestion?

[balaji.bandi]

I generally not configured vpc-peer link on the Line cards, i use supervisors always.

i would use supervisor card to use for Peer-link always - Not sure what is the full specification of your kit.

[Sunshine East]

To my knowledge, N9K SUPs (Sup-A in my case) does not have any Eth ports - so you cannot form peer-link.

[balaji.bandi]

I may have missed some information here,. i mean to say Nexus 93XX Model i mean.

In your case yes - again as I mentioned I was not sure which model, i am guessing you having Nexus 9500 chasis, please refer below guide :

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/6-x/interfaces/configuration/guide/b_Cisco_Nexus_9000_Series_NX-OS_Interfaces_Configuration_Guide/b_Cisco_Nexus_9000_Series_NX-OS_Interfaces_Configuration_Guide_chapter_0111.html#...