Command History This guide is platform-specific. For command information about other platforms, seethe relevant Dell Networking OS Command Line Reference Guide.The following is a list of the Dell Networking OS version history for this command.Version Description9.9(0.0) Introduced on the C9010.9.2(1.0) Introduced on the Z9500.8.3.19.0 Introduced on the S4820T.8.3.12.0 Introduced on the S4810.8.4.2.3 Introduced on the S-Series S50.Usage Information 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 interfaceassigned to an uplink-state group as either an upstream or downstream interface, butnot both.You can assign individual member ports of a port channel to the group. An uplink-stategroup can contain either the member ports of a port channel or the port channel itself,but not both.RelatedCommands • upstream — assigns a port or port-channel to the uplink-state group as anupstream interface.• uplink-state-group — creates an uplink-state group and enables the tracking ofupstream links.downstream auto-recoverEnable auto-recovery so that UFD-disabled downstream ports in an uplink-state group automatically comeup when a disabled upstream port in the group comes back up.C9000 SeriesSyntax downstream auto-recoverTo disable auto-recovery on downstream links, use the no downstream auto-recover command.Defaults The auto-recovery of UFD-disabled downstream ports is enabled.Uplink Failure Detection (UFD) 2195
