Users Guide

Version Description
8.3.12.0 Introduced on the S4810.
8.4.2.3 Introduced on the S-Series S50.
Usage Information
You can assign physical port or port-channel interfaces to an uplink-state group.
You can assign an interface to only one uplink-state group. Configure each interface assigned to an uplink-state
group as either an upstream or downstream interface, but not both.
You can assign individual member ports of a port channel to the group. An uplink-state group can contain either
the member ports of a port channel or the port channel itself, but not both.
Related
Commands
• upstream — assigns a port or port-channel to the uplink-state group as an upstream interface.
• uplink-state-group — creates an uplink-state group and enables the tracking of upstream links.
downstream auto-recover
Enable auto-recovery so that UFD-disabled downstream ports in an uplink-state group automatically come up when a disabled upstream
port in the group comes back up.
Syntax
downstream auto-recover
To disable auto-recovery on downstream links, use the no downstream auto-recover command.
Defaults The auto-recovery of UFD-disabled downstream ports is enabled.
Command Modes UPLINK-STATE-GROUP
Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.8(2.0) Introduced on the S3100 series.
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.
1378 Uplink Failure Detection (UFD)