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

[Satish Patel]

Thanks Gustav,

After unlimited try i found following issue, its on Linux server side,
as soon as i removed "downdelay=1000" option and restart server
everything works, my vpc came up immediately, now question is why does
nexus doesn't like that option?

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

Changed to

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

On Mon, Jul 9, 2018 at 8:28 PM, Gustav Ulander
<gustav.ulander at telecomputing.se> wrote:
> 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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