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vPC member port keeps on getting suspended

Hi,

I'm trying to create my first vPC on my Nexus5K for my UCS server but one port keeps on getting suspended. I'm using 2 ports on each 5K, E1/1 and E1/2 and port-channel 100 for both interface. Out of these 2 ports, 1 port always gets suspended. If i try to shutdown the working port, the suspended port comes UP and works fine. If i remove the suspended interface out of the port-channel bundle, the interface comes up. i have tried to rebuild the configuration and still doesnt work.

How can i resolve this issue? Thanks in advance.

Po500 - vPC peer link

Po100 - port-channel to my server

Config:

=====


interface Ethernet1/2

  switchport mode trunk

  channel-group 100 mode active

interface Ethernet1/2

  switchport mode trunk

  channel-group 100 mode active

interface port-channel100

  switchport mode trunk

  speed 10000

  vpc 100

  interface port-channel500

  switchport mode trunk

spanning-tree port type network

  speed 10000

  vpc peer-link

Port-Channel summary

=================

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

Group Port-       Type     Protocol  Member Ports

      Channel

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

100   Po200(SU)   Eth      LACP      Eth1/1(P)   Eth1/2(s)

500  500(SU)  Eth      LACP      Eth1/10(P)   Eth1/11(P) 

Interface Status:

============

Ethernet1/1 is up

Dedicated Interface

  Belongs to Po100

Ethernet1/2 is down (suspended)

Dedicated Interface

  Belongs to Po200

VPC Status

==========

N5K-1# show vpc brief

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                          : primary                      

Number of vPCs configured         : 1  

Peer Gateway                      : Enabled

Peer gateway excluded VLANs     : -

Dual-active excluded VLANs        : -

Graceful Consistency Check        : Enabled

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

vPC Peer-link status

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

id   Port   Status Active vlans   

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

1    Po500 up     1-100        

vPC status

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

id     Port        Status Consistency Reason                     Active vlans

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

100    Po100       up     success     success                                                                  1-100

Logs

=====

2013 Sep  4 04:14:37 N5K-1 %ETHPORT-5-IF_ADMIN_UP: Interface port-channel100 is admin up .

2013 Sep  4 04:14:37 N5K-1 %ETHPORT-5-IF_DOWN_PORT_CHANNEL_MEMBERS_DOWN: Interface port-channel100 is down (No operational members)

N5K-1(config-if)# 2013 Sep  4 04:14:38 N5K-1 %ETHPORT-5-SPEED: Interface Ethernet1/1, operational speed changed to 10 Gbps

2013 Sep  4 04:14:38 N5K-1 %ETHPORT-5-IF_DUPLEX: Interface Ethernet1/1, operational duplex mode changed to Full

2013 Sep  4 04:14:38 N5K-1 %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface Ethernet1/1, operational Receive Flow Control state changed to off

2013 Sep  4 04:14:38 N5K-1 %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface Ethernet1/1, operational Transmit Flow Control state changed to off

2013 Sep  4 04:14:38 N5K-1 %ETHPORT-5-SPEED: Interface port-channel100, operational speed changed to 10 Gbps

2013 Sep  4 04:14:38 N5K-1 %ETHPORT-5-IF_DUPLEX: Interface port-channel100, operational duplex mode changed to Full

2013 Sep  4 04:14:38 N5K-1 %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface port-channel100, operational Receive Flow Control state changed to off

2013 Sep  4 04:14:38 N5K-1 %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface port-channel100, operational Transmit Flow Control state changed to off

2013 Sep  4 04:14:39 N5K-1 %ETHPORT-5-SPEED: Interface Ethernet1/2, operational speed changed to 10 Gbps

2013 Sep  4 04:14:39 N5K-1 %ETHPORT-5-IF_DUPLEX: Interface Ethernet1/2, operational duplex mode changed to Full

2013 Sep  4 04:14:39 N5K-1 %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface Ethernet1/2, operational Receive Flow Control state changed to off

2013 Sep  4 04:14:39 N5K-1 %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface Ethernet1/2, operational Transmit Flow Control state changed to off

2013 Sep  4 04:14:39 N5K-1 %ETHPORT-5-SPEED: Interface port-channel100, operational speed changed to 10 Gbps

2013 Sep  4 04:14:39 N5K-1 %ETHPORT-5-IF_DUPLEX: Interface port-channel100, operational duplex mode changed to Full

2013 Sep  4 04:14:39 N5K-1 %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface port-channel100, operational Receive Flow Control state changed to off

2013 Sep  4 04:14:39 N5K-1 %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface port-channel100, operational Transmit Flow Control state changed to off

2013 Sep  4 04:14:42 N5K-1 %ETH_PORT_CHANNEL-5-PORT_SUSPENDED: Ethernet1/2: Ethernet1/2 is suspended

2013 Sep  4 04:14:42 N5K-1 %ETH_PORT_CHANNEL-5-PORT_UP: port-channel100: Ethernet1/1 is up

2013 Sep  4 04:14:42 N5K-1 %ETH_PORT_CHANNEL-5-FOP_CHANGED: port-channel100: first operational port changed from none to Ethernet1/1

2013 Sep  4 04:14:42 N5K-1 %ETHPORT-5-IF_UP: Interface Ethernet1/1 is up in mode trunk

2013 Sep  4 04:14:42 N5K-1 %ETHPORT-5-IF_UP: Interface port-channel100 is up in mode trunk

3 REPLIES
VIP Super Bronze

vPC member port keeps on getting suspended

Hi,

Eth1/1(P) Eth1/2(s)

On the UCS side, is the ports that connets to e1/2 configured correctly for LACP?

HTH

Purple

Re: vPC member port keeps on getting suspended

  If your post is correct you need to find out why it says this . This shows them in 2 different port-channels and why it would suspend the second member.  both have to be in the same portchannel

Interface Status:

============

Ethernet1/1 is up

Dedicated Interface

  Belongs to Po100

Ethernet1/2 is down (suspended)

Dedicated Interface

  Belongs to Po200

New Member

vPC member port keeps on getting suspended

Hi Glenn,

E1/2 is also po100, i miss copied it from another switch. Thanks!

Ethernet1/2 is down (suspended)

Dedicated Interface

  Belongs to Po100

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