Problem wih channel-port on Nexus5000

[joyride_us2]

Hi,

I have 2 Nexus5000 completed with 2 nexus 2000.

I am trying to get a vPC up between both.

On the nexus 5000 :

Int eth103/1/13

switchport mode trunk

switchtrunk trunk native vlan 110

switchport trunk allowed 2,3,4

channel-group 121 mode active

interface port-channel 121

switchport trunk native vlan 110

switch trunk allowed vlan 2,3,4

vpc 121

On the other nexus :

interface eth104/1/12

switchport mode trunk

switch trunk  native vlan 110

switchport trunk allowed vlan  2,3,4

channel-group 121 mode active

Interface po121

switch mode trunk

switchport trunk native vlan 110

switchport trunk allowed vlan 2,3,4

vpc 121

Sh int ethernet104/1/12 >> up and up

sh int po121 >> down and down (no operational members)

why?

:)

thanks!

[joyride_us2]

...although it does declare the eth104/1/2 as a "Members in this channel"

[Mark Malone]

ok thats strange as to connect a device to a server on 2k ports in po you just need a standard port-channel setup rather than a vpc setup

The citrix side is definitly set to team yes

Try this command it will tell whether the 5k is even trying to form the po through lacp, if you see sent packets and none on recieve there s an issue on server side

Show lacp counters interface po 200

should look like this if servers not responding being sent by 5k but nothing coming back

# Show lacp counters interface po 177

                    LACPDUs         Marker      Marker Response    LACPDUs

Port              Sent   Recv     Sent   Recv     Sent   Recv      Pkts Err

---------------------------------------------------------------------

port-channel177

Ethernet117/1/2    453    0        0      0        0      0        0

Ethernet118/1/2    433    0        0      0        0      0        0

[joyride_us2]

the funny thing is that I have nother VPC (199) just neighbor...working just fine!

Anyway :

on Po200:

Sent : 35606

Rvc : 68

On the working vPC :

Sent 35399

Rcv : 35373

[Mark Malone]

Hmmm Ye you should not need vpc because it's a fex and 5k already does that bit,but either way I had issue like this before linux server was set for lacp seen the same as you posted ,nexus doing it's best sending the packets to try form th po but even though it was set for lacp the linux guy had to set the lacp on there side to be aggressive that fixed it packets started flooding in from server side.To me from experience something s not right on server side you set that many packets but received so few,I don't think your config is wrong

[joyride_us2]

Thank you.

[joyride_us2]

Do you want stars ? :)

[Mark Malone]

ah theres no point marking it till its fixed :) then its useful as the fixed ones show up for other users if they have the same issue , did you have any luck on the server side ?