[c-nsp] LACP Nexus vpc down after server reboot

[Gustav Ulander]

We have had some issues with VPC over non networking hw.
Works great towards our Juniper switches but is a pain to all things EMC more or less.
Its hit and miss towards some IBM AIX machines. It gets broken quite often when they patch the AIX machines. 
I would be abit careful running VPC to non networking hw and test a lot not just initialization of the channel but also failover, redundancy tests and so on.  

//Gustav

-----Ursprungligt meddelande-----
Från: cisco-nsp <cisco-nsp-bounces at puck.nether.net> För Satish Patel
Skickat: den 9 juli 2018 18:44
Till: Cisco Network Service Providers <cisco-nsp at puck.nether.net>
Ämne: [c-nsp] LACP Nexus vpc down after server reboot

I have Nexus 3064 with vPC configuration and some strange issue going on, I have configured LACP 802.3ad bonding with my Linux server everything was good and working great but as soon as i reboot server i found on Nexus switch vpc is down

N3K(config-if)# sh vpc 137


vPC status
----------------------------------------------------------------------
id   Port   Status Consistency Reason                     Active vlans
--   ----   ------ ----------- ------                     ------------
137  Po137  down*  success     success                    -


But as soon as i do "shut/no shut" on po137 interface it works and vpc brought up.

is this normal behavior on Cisco Nexus switches? I am using many IOS switch in same config and it works but with vpc i am having issue.

This is my switch config, i am running nexus 7.0.x NX-OS

interface port-channel137
  switchport mode trunk
  switchport trunk native vlan 40
  switchport trunk allowed vlan 10,20,30,100
  speed 10000
  vpc 137


on Linux side i have following config.

BONDING_OPTS="mode=4 miimon=500 downdelay=1000 lacp_rate=1"
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