CLI Guide

downstream disable links
Configure the number of downstream links in the uplink-state group that are disabled if one upstream
link in an uplink-state group goes down.
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 from 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
Supported Modes Programmable-Mux (PMUX)
Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.4(0.0) Supported on the FN I/O Aggregator.
9.2(0.0) Supported on the M I/O Aggregator.
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
Re-enable upstream-link tracking for an uplink-state group after it has been disabled.
Syntax
enable
1498
Uplink Failure Detection (UFD)