Netgear M4100-24G-POE+ (GSM7224P) - ProSAFE Gigabit L2+ Managed Switch Software Guide

If you do not enter a value for the <slot/port> parameter, the command output displays 
the fields that are shown in the following table.

If you enter a value for the <slot/port> parameter or you use the all keyword, the 
command output displays the fields that are shown in the following table.

Undetermined. UDLD has not collected enough information to determine the state of 
the port.

Not applicable. UDLD is disabled, either globally or on the port

Shutdown. UDLD has detected a unidirectional link and shutdown the port, That is, 
the port is in an errDisabled state.

Bidirectional. UDLD has detected a bidirectional link.

Undetermined(Link Down). The port would transition into this state when the port link 
physically goes down due to any reasons other than the port been put into D-Disable 
mode by UDLD protocol on the switch.

If there is an USB flash device in the USB slot, the commands display the device status and 
content.

This command displays USB flash device details.

Admin Mode

The global administrative mode of UDLD.

Message Interval The time period (in seconds) between the transmission of UDLD probe packets.

Timeout Interval

The time period (in seconds) before making decision that link is unidirectional.

Slot/Port

The identifying slot and port of the interface.

Admin Mode

The administrative mode of UDLD configured on this interface. This is either Enabled or 
Disabled.

UDLD Mode

The UDLD mode configured on this interface. This is either Normal or Aggressive.

UDLD Status

The status of the link as determined by UDLD. The options are:

Format

show USB device

Mode

Privileged EXEC