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Uplink Failure Detection (UFD)
Uplink failure detection (UFD) provides detection of the loss of upstream connectivity and, if you use this
with NIC teaming, automatic recovery from a failed link.
clear ufd-disable
Re-enable one or more downstream interfaces on the switch/router that are in a UFD-Disabled Error
state so that an interface can send and receive traffic.
Syntax
clear ufd-disable {interface interface | uplink-state-group
group-id}
Parameters
interface
interface
Specify one or more downstream interfaces. For interface,
enter one of the following interface types:
• 10 Gigabit Ethernet: tengigabitethernet {slot/
port | slot/port-range}
• 40-Gigabit Ethernet:fortyGigE {slot/port}
• Port channel: port-channel {1–128 | 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:
gigabitethernet 1/1-2,5,9,11-12 port-channel
1-3,5
. A comma is required to separate each port and port-
range entry.
uplink-state-
group group-id
Re-enables all UFD-disabled downstream interfaces in the
group. The valid group-id values are from 1 to 16.
Defaults A downstream interface in a UFD-disabled uplink-state group is also disabled and is
in a UFD-Disabled Error state.
Command
Modes
CONFIGURATION
Command
History
This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
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Uplink Failure Detection (UFD)