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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
Command
History
This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.2(0.0) Introduced on the M I/O Aggregator. This command is
supported in Programmable-Mux (PMUX) mode only.
8.3.19.0 Introduced on the S4820T.
8.3.12.0 Introduced on the S4810.
8.4.2.3 Introduced on the S-Series S50.
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.
Uplink Failure Detection (UFD)
1823