Users Guide

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)
Command History
Version Description
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-congurable 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
To disable upstream-link tracking without deleting the uplink-state group, use the no enable command.
group-id Enables debugging on the specied uplink-state group. Valid group-id values are 1 to 16.
Defaults Upstream-link tracking is automatically enabled in an uplink-state group.
Command Modes UPLINK-STATE-GROUP
Supported Modes All Modes
Command History
Version Description
9.4(0.0) Supported on the FN I/O Aggregator.
9.2(0.0) Supported on the M I/O Aggregator.
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Uplink Failure Detection (UFD)