Users Guide

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.

Topics:

• clear ufd-disable

• debug uplink-state-group

• description

• downstream

• downstream auto-recover

• downstream disable links

• enable

• show running-config uplink-state-group

• show uplink-state-group

• uplink-state-group

• upstream

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[/subport] | slot/port[/subport]-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

Uplink Failure Detection (UFD) 2011