CLI Guide

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.

NOTE: In Standalone, VLT, and Stacking modes, the UFD group number is 1 by default and cannot

be changed.

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}

• 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

Supported Modes Programmable-Mux (PMUX)

Full–Switch

Uplink Failure Detection (UFD)

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