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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 network interface controller (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:
• Fast Ethernet:
fastethernet {
slot/port
|
slot/
port-range
}
• 10 Gigabit Ethernet:
tengigabitethernet {
slot/
port
|
slot/ port-range
}
• 40 Gigabit Ethernet:
fortygigabitethernet {
slot/
port
|
slot/ port-range
}
• Port channel:
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:
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.
Command
Modes
EXEC Mode
Command
History
Version 8.3.16.1
Introduced on the MXL 10/40GbE Switch IO Module.
Related
Commands
•
downstream
— assigns a port or port-channel to the uplink-state group as a
downstream interface.
Uplink Failure Detection (UFD)
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