Auto Disable

The auto-disable function allows you to automatically re-enable ports that the port monitor has disabled after a user-defined period of time. In the process, the device allows multiple triggering events to be considered.

You define the triggering events on the basis of which the device disables the ports in the settings for the port security (refer Port Security) and the port monitor (refer Port Monitor).

When the port monitor performs the Auto Disable action for a port, the settings in the “Auto-Disable” dialog, “Configuration” frame, decide what happens to the port:

Configuration

Tab. “Configuration” frame in the Diagnostics:Ports:Auto Disable dialog (Forts.)

Parameters

Meaning

“Link Flap”

Enables/disables the monitoring of link changes on the ports.

Possible values:

  • marked

    The auto-disable function monitors link changes on the ports. When the port monitor disables a port due to too many link changes, the device re-enables the port after the time defined in the “Reset Timer” field has elapsed. The prerequisite for this is that the “Reset Timer” value for the port is >0.

  • unmarked (default setting)

    The auto-disable function ignores link changes on the ports.

“CRC/Fragments”

Enables/disables the monitoring of CRC/fragment errors on the ports.

Possible values:

  • marked

    The auto-disable function monitors CRC/fragment errors on the ports. When the port monitor disables a port due to too many CRC/fragments, the device re-enables the port after the time defined in the “Reset Timer” field has elapsed. The prerequisite for this is that the “Reset Timer” value for the port is >0.

  • unmarked (default setting)

    The auto-disable function ignores CRC/fragment errors on the ports.

“Overload Detection”

Enables/disables the monitoring of the load on the ports.

Possible values:

  • marked

    The auto-disable function monitors the load on the ports. When the port monitor disables a port due to an overload, the device re-enables the port after the time defined in the “Reset Timer” field has elapsed. The prerequisite for this is that the “Reset Timer” value for the port is >0. For more prerequisites, see See Overload Detection..

  • unmarked (default setting)

    The auto-disable function ignores the load on the ports.

“Speed Duplex”

Enables/disables the monitoring of the speed and duplex combination on the ports.

Possible values:

  • marked

    The auto-disable function monitors the speed and duplex combination on the ports. When the port monitor disables a port due to an unpermitted combination of speed and duplex mode, the device re-enables the port after the time defined in the “Reset Timer” field has elapsed. The prerequisite for this is that the “Reset Timer” value for the port is >0.

  • unmarked (default setting)

    The auto-disable function ignores the speed and duplex combination on the ports.

“Port Security”

Enables/disables the monitoring of unauthorized accesses to the ports in combination with the “Port Security” function (refer Port Security).

Possible values:

  • marked

    The auto-disable function monitors unauthorized accesses to the ports. When the port monitor disables a port due to too many CRC/fragment errors, the device re-enables the port after the time defined in the “Reset Timer” field has elapsed. The prerequisite for this is that the “Reset Timer” value for the port is >0.

  • unmarked (default setting)

    The auto-disable function ignores unauthorized accesses to the ports.


Table

Tab. Table in the Diagnostics:Ports:Auto Disable dialog (Forts.)

Parameter

Meaning

“Port”

Shows the number of the device port to which the table entry relates.

“Reset Timer [s]”

Defines the time in seconds after which the device automatically re-enables the port disabled by the port monitor.

Possible values:

  • 0 (default setting)

    Timer is deactivated. The port remains disabled.

  • 30...2147483

If the port monitor has disabled the port due to an overload, further prerequisites apply for the re-enabling of the port (refer Overload Detection).

“Remaining Time [s]”

Remaining time in seconds until the automatic re-enabling of the port.

“Component”

Shows the name of the function that disabled the port.

“Reason”

Shows the triggering event due to which the port monitor disabled the port.

“Active”

Shows whether the auto-disable function is active on the relevant port.

Possible values:

  • marked

    The auto-disable function is active on the port. The port is currently disabled. After the time defined in the “Reset Timer” field has elapsed, the auto-disable function re-enables the port.

  • unmarked (default setting)

    The auto-disable function is inactive on the port.


Buttons

Tab. Buttons (Forts.)

Button

Meaning

“Set”

Transfers the changes to the volatile memory (RAM) of the device. To permanently save the changes afterwards, you open the Basic Settings:Load/Save dialog and click “Save”.

“Reload”

Updates the fields with the values that are saved in the volatile memory (RAM) of the device.

“Reset”

Enables the port when disabled by the Port Monitor or Port Security function.

“Help”

Opens the online help.