Cisco Nexus 9000 Series - Cannot Enable the Vpc Feature; Vpcs in Blocking State; Vlans on a Vpc Moved to Suspend State

STP MST Region Instance to 1
VLAN Mapping
STP Loopguard 1 Disabled Disabled
STP Bridge Assurance 1 Enabled Enabled
STP Port Type 1 Normal Normal
STP MST Simulate PVST 1 Enabled Enabled
Allowed VLANs - 1-10,15-20,30,37,99 1-10,15-20,30,37,99
Cannot Enable the vPC Feature
You might receive an error when you enable the vPC feature.
SolutionPossible CauseSymptom
Use the show modulecommand to
determine the hardware version of each
Ethernet module.
The hardware is incompatible with
the vPC.
Cannot enable the vPC
feature.
This example shows how to display the module hardware version:
switch# show module
Mod Ports Module-Type Model Status
--- ----- ----------------------------------- ------------------ ----------
22 0 Fabric Module N9K-C9508-FM ok
24 0 Fabric Module N9K-C9508-FM ok
26 0 Fabric Module N9K-C9508-FM ok
27 0 Supervisor Module N9K-SUP-A active *
29 0 System Controller N9K-SC-A active
30 0 System Controller N9K-SC-A standby
Mod Sw Hw
--- ---------------- ------
22 6.1(2)I1(1) 0.4040
24 6.1(2)I1(1) 0.4040
26 6.1(2)I1(1) 0.4040
27 6.1(2)I1(1) 0.4080
29 6.1(2)I1(1) 0.2170
30 6.1(2)I1(1) 0.2170
vPCs in Blocking State
vPCs might be in the blocking state because of bridge assurance (BA).
SolutionPossible CauseSymptom
Do not enable BA on the vPC.BPDU only sends on a single link of
a port channel. If a BA dispute is
detected, the entire vPC will be in
the blocking state.
vPC is in blocking state.
VLANs on a vPC Moved to Suspend State
VLANs on a vPC might move to the suspend state.
Cisco Nexus 9000 Series NX-OS Troubleshooting Guide, Release 7.x
48
Troubleshooting vPCs
Cannot Enable the vPC Feature