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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.
Z9500
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
|
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:
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.
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
Uplink Failure Detection (UFD)
1813
