Netgear M4100-26G CLI Manual - Page 618
UDLD Commands, show rmon {hcalarms | hcalarm <alarm index>}, udld enable, udld message time
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ProSafe M4100 and M7100 Managed Switches show rmon {hcalarms | hcalarm } This command displays the entries in the RMON hcAlarmTable. Format Mode show rmon {hcalarms | hcalarm } Privileged Exec UDLD Commands The UDLD feature detects unidirectional links physical ports. A unidirectional link is a forwarding anomaly in a Layer 2 communication channel in which a bi-directional link stops passing traffic in one direction. UDLD must be enabled on both sides of the link in order to detect a unidirectional link. The UDLD protocol operates by exchanging packets containing information about neighboring devices. udld enable This command enables UDLD globally on the switch. Default Format Mode disabled udld enable Global Config no udld enable This command disables udld globally on the switch. Format Mode no udld enable Global Config udld message time This command configures the interval between UDLD probe messages on ports that are in the advertisement phase. The range is from 7 to 90 seconds. Default Format Mode 15 udld message time Global Config Utility Commands 618