Service Manual

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.

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,

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

9.8(0.0) Introduced on the S3048-ON and S4048-ON.

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.

Commands

• downstream — assigns a port or port-channel to the uplink-state group as a

downstream interface.

Uplink Failure Detection (UFD)

1789