CLI Guide

Version Description
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.2(1.0) Introduced on the Z9500.
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.
Related
Commands
● 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 enables the tracking of upstream links.
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 the UFD brings down. 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, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.10.0.2 Introduced on the Z9100–ON.
9.8(2.0) Introduced on the S3100 series.
9.10(0.0) Introduced on the S3148.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.2(1.0) Introduced on the Z9500.
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
When one upstream interface in an uplink-state group goes down, you can configure the number of
downstream interfaces in an uplink-state group are put into a link-down state with an UFD-Disabled error
message.
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.
1596 Uplink Failure Detection (UFD)