CLI Guide

Table Of Contents
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:
1 Gigabit Ethernet: gigabitethernet {slot/port | slot/port-
range}
For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port | slot/port-range
Port channel: port-channel {1128 | 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, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.10.0.2 Introduced on the Z9100ON.
9.8(2.0) Introduced on the S3100 series.
9.10(0.0) Introduced on the S3148.
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