Whats this port channel error

[mahesh18]

Hi,

I have seen this in device logs

extende: %EC-SP-5-CANNOT_BUNDLE2: Gi2/6 is not compatible with Po5 and will be suspended (vlan mask is different)
extende: %EC-SP-5-CANNOT_BUNDLE2: Gi2/7 is not compatible with Po5 and will be suspended (vlan mask is different)
extende: %EC-SP-5-CANNOT_BUNDLE2: Gi3/7 is not compatible with Po5 and will be suspended (vlan mask is different)
extende: %EC-SP-5-CANNOT_BUNDLE2: Gi3/8 is not compatible with Po5 and will be suspended (vlan mask is different)
extende: %EC-SP-5-CANNOT_BUNDLE2: Gi4/7 is not compatible with Po5 and will be suspended (vlan mask is different)
extende: %EC-SP-5-CANNOT_BUNDLE2: Gi1/6 is not compatible with Po5 and will be suspended (vlan mask is different)
extende: %EC-SP-5-CANNOT_BUNDLE2: Gi1/7 is not compatible with Po5 and will be suspended (vlan mask is different)
extende: %EC-SP-5-CANNOT_BUNDLE2: Gi2/6 is not compatible with Po5 and will be suspended (vlan mask is different)

can someone explain what does this  mean right now port channel 5 has

5      Po5(SU)         PAgP      Gi1/6(P)   Gi1/7(P)   Gi2/6(P)   Gi2/7(P)
                                 Gi3/7(P)   Gi3/8(P)   Gi4/7(P)   Gi4/8(P)
many thanks

mahesh

[ryanulr]

I've also found before when receiving the error below that also in the log is the a message about LACP not being enabled on the remote port. In this case please check to see if using channel-group X mode desirable or channel-group X mode on would fix your issue! I know the original issue has been solved, but posting this for others who may be receiving the same error.  

extende: %EC-SP-5-CANNOT_BUNDLE2: Gi2/6 is not compatible with Po5 and will be suspended (vlan mask is different)

[anishreddysathi]

Adding Vlan 1 to port-channel will solve  it.

[DayeshShetty44737]

Even I faced the same problem.

There was a mismatch between Portchannel allowed vlan list and Physical Interface (in that port channel) allow vlan list.

Corrected it and the issue got fixed.

[Chris1350]

Thanks ! This solved my issue on Cat4500 with SUP6, by the way this issue is really specific on the IOS build because no issue at all with SUP8 but running another release (and SUP8 is running XE)

[RachelGomez161999]

Troubleshooting asymmetric port channels -

• Use APC when you want to configure a port channel whose members are connected to two different
upstream switches.
• APC depends on Cisco Discovery Protocol (CDP). Make sure CDP is enabled on VSM and upstream
switches.
• Physical ports within an APC get assigned subgroup IDs based on the CDP information received
from upstream switches.
• A user can manually configure subgroup IDs in interface configuration submode.
• Make sure that you configured sub-group CDP either with a port profile or on the port channel
interface.
• Ports in APC will come up only when they are assigned subgroup IDs manually or through CDP.
• Issue the show cdp neighbors command on the VSM and check the output.
• Once the ports came up, check that ports are put in the correct sub-groups by issuing the module
vem module-number execute vemcmd show pc command on the VEM.
• Use the debug port-channel trace command to collect information.

Regards,

Rachel Gomez