Dell Force10 S4820T FTOS Command Reference Guide - Page 1501
downstream disable links, Defaults, Command Modes, Command, History, Usage, Information
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Defaults Command Modes Command History Usage Information Related Commands The auto-recovery of UFD-disabled downstream ports is enabled. UPLINK-STATE-GROUP Version 8.3.19.0 Version 8.3.12.0 Version 8.4.2.3 Introduced on S4820T Introduced on S4810 Introduced on the S-Series S50. To disable auto-recovery on downstream links, enter the no downstream auto-recover command. downstream uplink-state-group Assign a port or port-channel to the uplink-state group as a downstream interface. Create an uplink-state group and enabling the tracking of upstream links. downstream disable links s S50 only Configure the number of downstream links in the uplink-state group that will be disabled if one upstream link in an uplink-state group goes down. Syntax Parameters Defaults Command Modes Command History Usage Information downstream disable links {number |all} number all Enter the number of downstream links to be brought down by UFD. Range: 1 to 1024. Brings down all downstream links in the group. No downstream links are disabled when an upstream link in an uplink-state group goes down. UPLINK-STATE-GROUP Version 8.3.19.0 Version 8.3.12.0 Version 8.4.2.3 Introduced on S4820T Introduced on S4810 Introduced on the S-Series S50. 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. To revert to the default setting, enter the no downstream disable links command. Uplink Failure Detection (UFD) | 1501