To configure the VLT port channel and interfaces connecting to the ACI leaf switches, run the commands shown in the following table. This table also shows how to configure and enable uplink failure detection (UFD).
interface port-channel 100 description “ACI connection” no shutdown switchport mode trunk switchport access vlan 1 switchport trunk allowed vlan 1612-1616 vlt-port-channel 100 interface ethernet 1/1/55 description “ACI connection leaf 1 eth 1/1” no shutdown channelgroup 100 mode active no switchport interface ethernet 1/1/56 description “ACI connection leaf 2 eth 1/1” no shutdown channel-group 100 mode active no switchport uplink-state-group 1 enable downstream ethernet1/1/3-1/1/4 upstream port-channel 100 | interface port-channel 100 description “ACI connection” no shutdown switchport mode trunk switchport access vlan 1 switchport trunk allowed vlan 1612-1616 vlt-port-channel 100 interface ethernet 1/1/55 description “ACI connection leaf 1 eth 1/2” no shutdown channel-group 100 mode active no switchport interface ethernet 1/1/56 description “ACI connection leaf 2 eth 1/2” no shutdown channel-group 100 mode active no switchport uplink-state-group 1 enable downstream ethernet1/1/3-1/1/4 upstream port-channel 100 |
Note: UFD is a feature that disables downlink interfaces due to uplink interface failures. Configuration of UFD is a best practice to prevent downstream resources from sending traffic to a switch with failed uplinks.