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The 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 mode
description text
The maximum length is 80 alphanumeric characters.
6. (Optional) Disable upstream-link tracking without deleting the uplink-state group.
UPLINK-STATE-GROUP mode
no enable
The 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 Interface
You 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 mode
clear 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 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 1/1-2,5,9,11-12
port-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-
disabled downstream interfaces in the group. The range is from 1 to 16.
The following example message shows the Syslog messages that display when you clear the UFD-Disabled state from
all disabled downstream interfaces in an uplink-state group by using the clear ufd-disable uplink-state-group
group-id command. All downstream interfaces return to an operationally up state.
02:36:43: %RPM0-P:CP %IFMGR-5-ASTATE_DN: Changed interface Admin state to down: Te 1/6
02:36:43: %RPM0-P:CP %IFMGR-5-OSTATE_DN: Changed interface state to down: Te 1/6
02:36:43: %RPM0-P:CP %IFMGR-5-OSTATE_DN: Downstream interface set to UFD error-disabled: Fo 3/48
02:36:43: %RPM0-P:CP %IFMGR-5-OSTATE_DN: Downstream interface set to UFD error-disabled: Fo 3/52
02:36:43: %RPM0-P:CP %IFMGR-5-OSTATE_DN: Downstream interface set to UFD error-disabled: Fo 3/56
02:36:43: %RPM0-P:CP %IFMGR-5-OSTATE_DN: Changed interface state to down: Fo 3/48
02:36:43: %RPM0-P:CP %IFMGR-5-OSTATE_DN: Changed interface state to down: Fo 3/52
02:36:43: %RPM0-P:CP %IFMGR-5-OSTATE_DN: Changed interface state to down: Fo 3/56
02:37:29: %RPM0-P:CP %IFMGR-5-ASTATE_DN: Changed interface Admin state to down: Te 1/7
02:37:29: %RPM0-P:CP %IFMGR-5-OSTATE_DN: Changed interface state to down: Te 1/7
02:37:29 : UFD: Group:3, UplinkState: DOWN
02:37:29: %RPM0-P:CP %IFMGR-5-OSTATE_DN: Changed uplink state group state to down: Group 3
02:37:29: %RPM0-P:CP %IFMGR-5-OSTATE_DN: Downstream interface set to UFD error-disabled: Fo 3/60
02:37:29: %RPM0-P:CP %IFMGR-5-OSTATE_DN: Changed interface state to down: Fo 3/60
02:38:31 : UFD: Group:3, UplinkState: UP
02:38:31: %RPM0-P:CP %IFMGR-5-OSTATE_UP: Changed uplink state group state to up: Group 3
Uplink Failure Detection (UFD)
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