Reference Guide

Uplink Failure Detection (UFD) | 1501
Defaults
The auto-recovery of UFD-disabled downstream ports is enabled.
Command Modes
UPLINK-STATE-GROUP
Command
History
Usage
Information
To disable auto-recovery on downstream links, enter the no downstream auto-recover
command.
Related
Commands
downstream disable links
s S50 only
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.
Syntax
downstream disable links {number |all}
Parameters
Defaults
No downstream links are disabled when an upstream link in an uplink-state group
goes down.
Command Modes
UPLINK-STATE-GROUP
Command
History
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.
To revert to the default setting, enter the
no downstream disable links command.
Version 8.3.19.0 Introduced on S4820T
Version 8.3.12.0 Introduced on S4810
Version 8.4.2.3 Introduced on the S-Series S50.
downstream Assign a port or port-channel to the uplink-state group as a downstream
interface.
uplink-state-group Create an uplink-state group and enabling the tracking of upstream
links.
number Enter the number of downstream links to be brought down by UFD.
Range: 1 to 1024.
all Brings down all downstream links in the group.
Version 8.3.19.0 Introduced on S4820T
Version 8.3.12.0 Introduced on S4810
Version 8.4.2.3 Introduced on the S-Series S50.