interface TenGigabitEthernet1/1/1
 description //N_638_5548_Nexus1
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 55
 switchport trunk allowed vlan 129,161,202
 switchport mode trunk
 spanning-tree port-priority 0
end


interface TenGigabitEthernet1/1/2
 description //N_638_5548_Nexus2
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 55
 switchport trunk allowed vlan 129,161,202
 switchport mode trunk
 spanning-tree port-priority 144


N_638_3750X_J64_Down#sh spanning-tree blockedports

Name                 Blocked Interfaces List
-------------------- ------------------------------------
VLAN0129             Te1/1/2
VLAN0202             Te1/1/2

Number of blocked ports (segments) in the system : 2