peer-link is down,vPC keep-alive is Suspended

[weihu24345251]

SW1# interface Ethernet1/1 no switchport channel-group 10 mode active no shutdown interface Ethernet1/2 no switchport channel-group 10 mode active no shutdown interface Ethernet1/3 switchport mode trunk channel-group 20 mode active interface Ethernet1/4 switchport mode trunk channel-group 20 mode active interface port-channel10 no switchport ip address 1.1.1.1/24 interface port-channel20 switchport mode trunk spanning-tree port type network vpc peer-link vpc domain 100 role priority 4098 peer-keepalive destination 1.1.1.2 source 1.1.1.1 delay restore 150 auto-recovery	SW2# interface Ethernet1/1 no switchport channel-group 10 mode active no shutdown interface Ethernet1/2 no switchport channel-group 10 mode active no shutdown interface Ethernet1/3 switchport mode trunk channel-group 20 mode active interface Ethernet1/4 switchport mode trunk channel-group 20 mode active interface port-channel10 no switchport ip address 1.1.1.2/24 interface port-channel20 switchport mode trunk spanning-tree port type network vpc peer-link vpc domain 100 role priority 4096 peer-keepalive destination 1.1.1.1 source 1.1.1.2 delay restore 150 auto-recovery
SW1# show port-channel summary Flags: D - Down P - Up in port-channel (members) I - Individual H - Hot-standby (LACP only) s - Suspended r - Module-removed b - BFD Session Wait S - Switched R - Routed U - Up (port-channel) p - Up in delay-lacp mode (member) M - Not in use. Min-links not met -------------------------------------------------------------------------------- Group Port- Type Protocol Member Ports Channel -------------------------------------------------------------------------------- 10 Po10(RU) Eth LACP Eth1/1(P) Eth1/2(P) 20 Po20(SU) Eth LACP Eth1/3(P) Eth1/4(P)	sw2# show port-channel summary Flags: D - Down P - Up in port-channel (members) I - Individual H - Hot-standby (LACP only) s - Suspended r - Module-removed b - BFD Session Wait S - Switched R - Routed U - Up (port-channel) p - Up in delay-lacp mode (member) M - Not in use. Min-links not met -------------------------------------------------------------------------------- Group Port- Type Protocol Member Ports Channel -------------------------------------------------------------------------------- 10 Po10(RU) Eth LACP Eth1/1(P) Eth1/2(P) 20 Po20(SU) Eth LACP Eth1/3(P) Eth1/4(P)
SW1# show vpc Legend: (*) - local vPC is down, forwarding via vPC peer-link vPC domain id : 100 Peer status : peer link is down vPC keep-alive status : Suspended (Destination IP not reachable) Configuration consistency status : failed Per-vlan consistency status : success Configuration inconsistency reason: Consistency Check Not Performed Type-2 inconsistency reason : Consistency Check Not Performed 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 : Enabled, timer is off.(timeout = 240s) Delay-restore status : Timer is off.(timeout = 150s) Delay-restore SVI status : Timer is off.(timeout = 10s) Operational Layer3 Peer-router : Disabled vPC Peer-link status --------------------------------------------------------------------- id Port Status Active vlans -- ---- ------ ------------------------------------------------- 1 Po20 up -	sw2# show vpc Legend: (*) - local vPC is down, forwarding via vPC peer-link vPC domain id : 100 Peer status : peer link is down vPC keep-alive status : Suspended (Destination IP not reachable) Configuration consistency status : failed Per-vlan consistency status : success Configuration inconsistency reason: Consistency Check Not Performed Type-2 inconsistency reason : Consistency Check Not Performed 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 : Enabled, timer is off.(timeout = 240s) Delay-restore status : Timer is off.(timeout = 150s) Delay-restore SVI status : Timer is off.(timeout = 10s) Operational Layer3 Peer-router : Disabled vPC Peer-link status --------------------------------------------------------------------- id Port Status Active vlans -- ---- ------ ------------------------------------------------- 1 Po20 up -

[Narayan Dev Sarma]

Hi,

Show vpc clearly states that

vPC keep-alive status : Suspended (Destination IP not reachable) that means the somehow your routing is not working.

vpc domain 100
role priority 4098
peer-keepalive destination 1.1.1.2 source 1.1.1.1

Here, by default Management VRF is chosen to route. So please check what VRF you are using in order to route the keepalive link traffic.

You can check if any firewall in between that might be blocking the default port UDP / 3200 used by the keepalive process.

[chanakya]

peer-keepalive destination 1.1.1.1 source 1.1.1.2  vrf default 

it will work

[markwaltersccie]

that worked, thanks.  what a ridiculous command!