Reference Guide

downstream disable links
Configure the number of downstream links in the uplink-state group that will be disabled if one upstream
link in an uplink-state group goes down.
S5000
Syntax
downstream disable links {number |all}
To revert to the default setting, use the no downstream disable links
command.
Parameters
number Enter the number of downstream links to be brought down
by UFD. The range is 1 to 1024.
all Brings down all downstream links in the group.
Defaults No downstream links are disabled when an upstream link in an uplink-state group
goes down.
Command
Modes
UPLINK-STATE-GROUP
Command
History
Version 9.0(1.3) Introduced on the S5000.
Usage
Information
A user-configurable number of downstream interfaces in an uplink-state group are
put into a link-down state with an UFD-Disabled error message when one
upstream interface in an uplink-state group goes down.
If all upstream interfaces in an uplink-state group go down, all downstream
interfaces in the same uplink-state group are put into a link-down state.
Related
Commands
• downstream – assigns a port or port-channel to the uplink-state group as a
downstream interface.
• uplink-state-group – creates an uplink-state group and enables the tracking of
upstream links.
enable
Enable uplink state group tracking for a specific UFD group.
S5000
Syntax
enable
To disable upstream-link tracking without deleting the uplink-state group, use the
no enable command.
Uplink Failure Detection (UFD)
1353