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Dell Configuration Guide for the S4048–ON System 9.14.2.5

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Sample Configuration: Uplink Failure Detection

The following example shows a sample configuration of UFD on a switch/router in which you configure as follows.

  • Configure uplink-state group 3.
  • Add downstream links Tengigabitethernet 1/1, 1/2, 1/5, 1/9, 1/11, and 1/12.
  • Configure two downstream links to be disabled if an upstream link fails.
  • Add upstream links Tengigabitethernet 1/3 and 1/4.
  • Add a text description for the group.
  • Verify the configuration with various show commands.

Example of Configuring UFD

DellEMC(conf)# uplink-state-group 3
00:08:11: %STKUNIT0-M:CP %IFMGR-5-ASTATE_UP: Changed uplink state group Admin state to up:
Group 3
DellEMC(conf-uplink-state-group-3)# downstream tengigabitethernet 1/1-2,5,9,11-12
DellEMC(conf-uplink-state-group-3)# downstream disable links 2
DellEMC(conf-uplink-state-group-3)# upstream tengigabitethernet 1/3-4
00:10:00: %STKUNIT0-M:CP %IFMGR-5-OSTATE_DN: Downstream interface set to UFD error-disabled:
Te 1/1
DellEMC#
00:10:00: %STKUNIT0-M:CP %IFMGR-5-OSTATE_DN: Changed interface state to down: Te 1/1
DellEMC(conf-uplink-state-group-3)# description Testing UFD feature

DellEMC(conf-uplink-state-group-3)# show config
!
uplink-state-group 3
description Testing UFD feature
downstream disable links 2
downstream TenGigabitEthernet 1/1-2,5,9,11-12
upstream TenGigabitEthernet 1/3-4
DellEMC(conf-uplink-state-group-3)#
DellEMC(conf-uplink-state-group-3)#exit
DellEMC(conf)#exit
DellEMC#
00:13:06: %STKUNIT0-M:CP %SYS-5-CONFIG_I: Configured from console by console

DellEMC# show running-config uplink-state-group
!
uplink-state-group 3
description Testing UFD feature
downstream disable links 2
downstream TenGigabitEthernet 1/1-2,5,9,11-12
upstream TenGigabitEthernet 1/3-4

DellEMC# show uplink-state-group 3

Uplink State Group: 3 Status: Enabled, Up

DellEMC# show uplink-state-group detail

(Up): Interface up (Dwn): Interface down (Dis): Interface disabled
Uplink State Group    : 3 Status: Enabled, Up
Upstream Interfaces   : Te 1/3(Up) Te 1/4(Dwn)
Downstream Interfaces : Te 1/1(Dis) Te 1/2(Dwn) Te 1/5(Dwn) Te 1/9(Dwn) Te 1/11(Dwn)
Te 1/12(Dwn)

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