Reference Guide

4. (Optional) Enable auto-recovery so that UFD-disabled downstream ports in the uplink-state group come up when a disabled
upstream port in the group comes back up.
UPLINK-STATE-GROUP mode
downstream auto-recover
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) Enters a text description of the uplink-state group.
UPLINK-STATE-GROUP mode
description text
The maximum length is 80 alphanumeric characters.
6. (Optional) Disables 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:
○ 10-Gigabit Ethernet: enter tengigabitethernet {slot/port | slot/port-range}
○ 40-Gigabit Ethernet: enter fortyGigE {slot/port |slot/port-range}
○ Port channel: 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: %SYSTEM-P:CP %IFMGR-5-ASTATE_DN: Changed interface Admin state to down: Te
0/46
02:36:43: %SYSTEM-P:CP %IFMGR-5-OSTATE_DN: Changed interface state to down: Te 0/46
02:36:43: %SYSTEM-P:CP %IFMGR-5-OSTATE_DN: Downstream interface set to UFD error-disabled: Fo 1/0
02:36:43: %SYSTEM-P:CP %IFMGR-5-OSTATE_DN: Downstream interface set to UFD error-disabled: Fo 1/4
02:36:43: %SYSTEM-P:CP %IFMGR-5-OSTATE_DN: Downstream interface set to UFD error-disabled: Fo 1/8
02:36:43: %SYSTEM-P:CP %IFMGR-5-OSTATE_DN: Downstream interface set to UFD error-disabled: Fo
1/12
02:36:43: %SYSTEM-P:CP %IFMGR-5-OSTATE_DN: Changed interface state to down: Fo 1/0
02:36:43: %SYSTEM-P:CP %IFMGR-5-OSTATE_DN: Changed interface state to down: Fo 1/4
02:36:43: %SYSTEM-P:CP %IFMGR-5-OSTATE_DN: Changed interface state to down: Fo 1/8
02:36:43: %SYSTEM-P:CP %IFMGR-5-OSTATE_DN: Changed interface state to down: Fo 1/12
Uplink Failure Detection (UFD)
761