Dell PowerEdge FX2/FX2s - Manual (Page 210)

The default is auto-recovery of UFD-disabled downstream ports is enabled.
To disable auto-recovery, use the no downstream auto-recover command.
6. Specify the time (in seconds) to wait for the upstream port channel (LAG 128) to come back up
before server ports are brought down.
UPLINK-STATE-GROUP mode
defer-timer seconds
NOTE: This command is available in Standalone and VLT modes only.
The range is from 1 to 120.
7. (Optional) Enter a text description of the uplink-state group.
UPLINK-STATE-GROUP mode
description text
The maximum length is 80 alphanumeric characters.
8. (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 (in PMUX mode)
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}
– 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 0/1-2,5,9,11-12
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.
210 Uplink Failure Detection (UFD)