NOTE: Downstream interfaces in an uplink-state group are put into a Link-Down state with an UFD-Disabled errormessage only when all upstream interfaces in the group go down.To revert to the default setting, use the no downstream disable links command.4 (Optional) Enable auto-recovery so that UFD-disabled downstream ports in the uplink-state group come up when a disabled upstreamport in the group comes back up.UPLINK-STATE-GROUP modedownstream auto-recoverThe default is auto-recovery of UFD-disabled downstream ports is enabled.To disable auto-recovery, use the no downstream auto-recover command.5 (Optional) Enter a text description of the uplink-state group.UPLINK-STATE-GROUP modedescription textThe maximum length is 80 alphanumeric characters.6 (Optional) Disable upstream-link tracking without deleting the uplink-state group.UPLINK-STATE-GROUP modeno enableThe default is upstream-link tracking is automatically enabled in an uplink-state group.To re-enable upstream-link tracking, use the enable command.Clearing a UFD-Disabled InterfaceYou can manually bring up a downstream interface in an uplink-state group that UFD disabled and is in a UFD-Disabled Error state.To re-enable one or more disabled downstream interfaces and clear the UFD-Disabled Error state, use the following command.• Re-enable a downstream interface on the switch/router that is in a UFD-Disabled Error State so that it can send and receive traffic.EXEC modeclear ufd-disable {interface interface | uplink-state-group group-id}For interface, enter one of the following interface types:• For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the slot/port information.• For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the slot/port/subport information.• For a 25-Gigabit Ethernet interface, enter the keyword twentyFiveGigE then the slot/port/subport information.• For a 50-Gigabit Ethernet interface, enter the keyword fiftyGigE then the slot/port/subport information.• For a 100-Gigabit Ethernet interface, enter the keyword hundredGigE then the slot/port/subport information.• For a port channel interface, enter port-channel {1-512 | port-channel-range}• Where port-range and port-channel-range specify a range of ports separated by a dash (-) and/or individual ports/port channels in any order; for example:tengigabitethernet 1/1/1-1/1/2,1/5/1,1/9/1,1/11/1-1/12/2port-channel 1-3,5• A comma is required to separate each port and port-range entry.clear ufd-disable {interface interface | uplink-state-group group-id}: re-enables all UFD-disableddownstream interfaces in the group. The range is from 1 to 16.Uplink Failure Detection (UFD) 905
