No operational members and UCS vPC

[Terry MacDougal]

I am getting the following error message when trying to configure a vPC from a set of 6248 FIs to a set of N5Ks. Lacp and vpc are enabled on the 5ks.

"No operational members"

sho vpc br

Legend:

                (*) - local vPC is down, forwarding via vPC peer-link

vPC domain id                     : 1  

Peer status                       : peer adjacency formed ok     

vPC keep-alive status             : peer is alive                

Configuration consistency status  : success

Per-vlan consistency status       : success                      

Type-2 consistency status         : success

vPC role                          : secondary                    

Number of vPCs configured         : 1  

Peer Gateway                      : Disabled

Dual-active excluded VLANs        : -

Graceful Consistency Check        : Enabled

Auto-recovery status              : Enabled (timeout = 240 seconds)

sho vpc consistency-parameters int po 22

    Legend:

        Type 1 : vPC will be suspended in case of mismatch

Name                        Type  Local Value            Peer Value            

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

Shut Lan                    1     No                     No                   

STP Port Type               1     Default                Default              

STP Port Guard              1     None                   None                 

STP MST Simulate PVST       1     Default                Default              

mode                        1     on                     on                   

Speed                       1     10 Gb/s                10 Gb/s              

Duplex                      1     full                   full                 

Port Mode                   1     trunk                  trunk                

Native Vlan                 1     1                      1                    

MTU                         1     1500                   1500                 

Admin port mode             1                                                 

vPC card type               1     Empty                  Empty                

Allowed VLANs               -     1-4094                 1,xxx.xxx.xxx.xxx.xxx.xxx

sho int po 22 br

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

Port-channel VLAN    Type Mode   Status  Reason                    Speed   Protocol

Interface                                                                 

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

Po22         1       eth  trunk  up      none                       a-10G(D)  none

feat(config-if)#

sho run int po 22 membership

!Command: show running-config interface port-channel22 membership

!Time: Mon Sep 28 18:31:06 2009

version 6.0(2)N2(2)

interface port-channel22

  switchport mode trunk

  speed 10000

  vpc 22

interface Ethernet1/15

  switchport mode trunk

  channel-group 22

interface Ethernet1/16

  switchport mode trunk

  channel-group 22

[Terry MacDougal]

N5Ks = 6.0(2)N1(2)

UCS = 2.1(3a)

[Robert Burns]

Just to confirm, you're connecting like this:

FI-A Port X_____PoX______N5K1

FI-A Port Y              N5K2

FI-B Port X_____PoY______N5K1

FI-B Port Y              N5K2

Ensure the same VLANs are allowed on each N5K for each VPC.  From your output above they dont look consistent.

Confirm your topology with as much detail as you can so we can assist further.

**Also ensure on your N5K side you're using "channel-group X mode active" to ensure LACP is enabled.  We only support active Port Channels with UCS.

Robert

[Terry MacDougal]

FI-A Port 17_____Po22______N5K1

FI-A Port 18             N5K2

FI-B Port 17_____Po22_____N5K1

FI-B Port 18              N5K2

Checking vlans now.....

[Robert Burns]

**Also ensure on your N5K side you're using "channel-group X mode  active" to ensure LACP is enabled.  We only support active Port Channels  with UCS.

[Terry MacDougal]

Here are the commands, I might have missed something...

xxxx(config)# int e1/15-16

xxxx(config-if-range)# channel-group 22

xxxx(config-if-range)# int po 22

xxxx(config-if)# vpc 22

[Robert Burns]

That creates a static port channel (mode on) vs. active (mode active aka LACP).

Change your Port channel mode to "mode active" on the N5K sides as detailed above.

Robert

[Terry MacDougal]

Almost there.... So the port channel is up on FI-A and still getting no operational members on FI-B.

[Tom MacDonald · Accepted solution]

Terry,

I had the same error when starting to integrate UCS with the Nexus product line. In addition to LACP, how many vPC's do you have on "each" 5K? From the diagrams above, you should have 2. I bet you have only 1.

Mike