I'm new to configuring vPC, but ran into a problem with a set of Nexus 5548s. When I add the vpc peer-link command to my port channel, SPT becomes unavailable for that interface. Note, I have the exact same configuration running on another set of 5548 (not connected to this set) with no issue. When SPT becomes unavailable, I'm no longer capable of reaching the mgmt interface of the peer Nexus. When the command is removed, I can ping across.
nx1
cfs eth distribute
feature lacp
feature vpc
feature lldp
feature ftp
spanning-tree vlan 1-3967 priority 4096
vrf context management
ip route 0.0.0.0/0 10.244.137.225
vpc domain 100
peer-keepalive destination 10.244.137.228
interface port-channel1
switchport mode trunk
spanning-tree port type network
speed 1000
vpc peer-link
interface Ethernet1/1
description asa-1-pri gi0/0
switchport access vlan 50
speed 1000
interface Ethernet1/2
description asa-1-pri gi0/1
speed 1000
interface Ethernet1/3
description asa-1-pri gi0/2
switchport access vlan 10
speed 1000
interface Ethernet1/4
description asa-1-pri gi0/3
switchport access vlan 99
speed 1000
interface Ethernet1/5
description asa-1-pri mgmt
speed 1000
interface Ethernet1/6
description ch2-lb-1 eth0/1
shutdown
switchport access vlan 10
speed 1000
interface Ethernet1/7
description ch2-lb-1 eth0/2
shutdown
switchport access vlan 11
speed 1000
interface Ethernet1/8
description ch2-lb-1 mgmt
switchport access vlan 99
speed 1000
interface Ethernet1/9
description Internet
switchport access vlan 50
speed 1000
interface Ethernet1/10
description Temp-Switch
switchport access vlan 50
speed 1000
interface Ethernet1/11
description nx2 mgmt port
switchport access vlan 99
spanning-tree port type edge
speed 1000
interface Ethernet1/23
description temp-pc-access
switchport access vlan 99
speed 1000
interface Ethernet1/24
description ch2-ucs01 mgmt
switchport access vlan 99
speed 1000
interface Ethernet1/25
description ch2-netapp-1 E0E
speed 1000
interface Ethernet1/26
description ch2-netapp-1 mgmt
switchport access vlan 99
speed 1000
interface Ethernet1/27
description ch2-netapp-1 E0C
interface Ethernet1/28
description ch2-netapp-2 E0C
interface Ethernet1/29
description ch2-ucs-1 Po29
interface Ethernet1/30
description ch2-ucs-2 Po30
interface Ethernet1/31
description ch2-nx-2 eth1/31
switchport mode trunk
speed 1000
channel-group 1 mode active
interface Ethernet1/32
description ch2-nx-2 eth1/32
switchport mode trunk
speed 1000
channel-group 1 mode active
interface mgmt0
description mgmt int to nx-2 eth 1/11
vrf member management
ip address 10.244.137.227/27
nx2
cfs eth distribute
feature lacp
feature vpc
feature lldp
feature vtp
spanning-tree vlan 1-100 priority 28672
vrf context management
ip route 0.0.0.0/0 10.244.137.225
vpc domain 100
peer-keepalive destination 10.244.137.227
interface port-channel1
switchport mode trunk
spanning-tree port type network
speed 1000
vpc peer-link
interface Ethernet1/1
description asa-1-sec gi 0/0
switchport access vlan 50
speed 1000
interface Ethernet1/2
description asa-1-sec gi 0/1
speed 1000
interface Ethernet1/3
description asa-1-sec gi 0/2
switchport access vlan 10
speed 1000
interface Ethernet1/4
description asa-1-sec gi 0/3
switchport access vlan 99
speed 1000
interface Ethernet1/5
description asa-1-sec mgmt
shutdown
switchport access vlan 99
speed 1000
interface Ethernet1/6
description ch2-lb-2 eth0/1
shutdown
switchport access vlan 10
speed 1000
interface Ethernet1/7
description ch2-lb-2 eth0/2
shutdown
switchport access vlan 11
speed 1000
interface Ethernet1/8
description ch2-lb-2 mgmt
switchport access vlan 99
speed 1000
interface Ethernet1/11
description dc5-nx-1 mgmt 0
switchport access vlan 99
spanning-tree port type edge
speed 1000
interface Ethernet1/23
description temp-pc-link
switchport access vlan 99
speed 1000
interface Ethernet1/24
description ch2-ucs-2 mgmt
switchport access vlan 99
speed 1000
interface Ethernet1/25
description ch2-netapp-2 E0E
speed 1000
interface Ethernet1/26
description ch2-netapp-2 mgmt
switchport access vlan 99
speed 1000
interface Ethernet1/27
description ch2-netapp-1 E0D
interface Ethernet1/28
description ch2-netapp-2 E0D
interface Ethernet1/29
description ch2-ucs-2 Po29
interface Ethernet1/30
description ch2-ucs-1 Po30
interface Ethernet1/31
description ch2-nx-1 eth 1/31
switchport mode trunk
speed 1000
channel-group 1 mode active
interface Ethernet1/32
description ch2-nx-2 eth 1/32
switchport mode trunk
speed 1000
channel-group 1 mode active
interface mgmt0
description mgmt int to nx-1 eth 1/11
vrf member management
ip address 10.244.137.228/27
nx-1# sho spanning-tree int port-channel 1
No spanning tree information available for port-channel1
nx-1# sho vpc brief
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id : 100
Peer status : peer link is down
vPC keep-alive status : peer is not reachable through peer-keepalive
Configuration consistency status : failed
Per-vlan consistency status : success
Configuration inconsistency reason: Consistency Check Not Performed
Type-2 consistency status : failed
Type-2 inconsistency reason : QoSMgr type-1 configuration incompatible
vPC role : none established
Number of vPCs configured : 0
Peer Gateway : Disabled
Dual-active excluded VLANs : -
Graceful Consistency Check : Disabled (due to peer configuration)
Auto-recovery status : Disabled
vPC Peer-link status
---------------------------------------------------------------------
id Port Status Active vlans
-- ---- ------ --------------------------------------------------
1 Po1 up -
Once again, I have this same configuration running on another set with no issue.
Any suggestions would be appreciated.
