Symptom

Following error messages could be observed with N9k/3k switches: %ETHPORT-5-IF_SEQ_ERROR: Error ("invalid argument to function call") communicating with MTS_SAP_PIXM_LOCAL for opcode MTS_OPC_PIXM_SET_MULT_CBL_VLAN_PORT_STATE (RID_PORT: Ethernet1/10) %ETHPORT-5-IF_DOWN_ERROR_DISABLED: Interface Ethernet1/10 is down (Error disabled. Reason:invalid argument to function call) Interface is marked as error disabled due to internal error: # show int eth1/10 Ethernet1/10 is down (Internal-Fail errDisable) # show int eth1/10 brief -------------------------------------------------------------------------------- Ethernet VLAN Type Mode Status Reason Speed Port Interface Ch # -------------------------------------------------------------------------------- Eth1/10 1 eth trunk down Internal-Fail errDisabl auto(D) 5

Conditions

NX-OS release 9.3(5), VPC setup with following commands under port-channel interface: switchport trunk allowed vlan none lacp vpc-convergence

Workaround

Allow at least one VLAN under port-channel interface with "lacp vpc-convergence" configured: example: # switchport trunk allowed vlan 2

Further Problem Description