Port Monitor

The Port Monitor dialog enables you to monitor ports. When particular conditions occur, such as connection problems due to a loose connection, the device performs a pre-defined action, e.g. it deactivates the port.

This dialog provides you with the following functions:

This is how you activate a "Global" card index action:

Note: Set the appropriate parameters in the corresponding card index. Using the "Reload" button, you discard unsaved changes in every card index.
Using the "Set" button, you save the settings of every card index.

Parameters

Meaning

“Operation” Frame

Switches the “Port monitor” function for the device on or off.

Port table

 

Port

List of the device's available ports.

Port Monitor on

You select the ports to be monitored here.

Link Flap on

You select here whether link changes trigger an action. Switchovers from the “Link down” state following “Link up” are considered as a link changes.

CRC/Fragments on

You select here whether CRC or fragment errors that occur trigger an action.

Overload Detection on

You select here whether Overload Detection triggers an action.

Active Condition

Shows the condition on the basis of which the device performed an action on this port.

Action

You select the action here, which the device performs when a condition occurs. The following actions are possible:

  • Deactivating the port

  • Sending a trap.

Port Status

Displays the current port status.

  • up: Data transmission via the port is possible.

  • down: Data transmission via the ports is interrupted.

Tab. Global Port Monitor Table


Note: If the device deactivates a port after an interface disable condition occurs, use the auto disable function to recover this deactivation.

You set the parameters for the "Link Change" conditions as follows:

Note: The parameters set apply to every port that you have activated the "Link Change on" setting in the "Global" card index for.
Using the "Reload" button, you discard unsaved changes in every card index.
Using the "Set" button, you save the settings of every card index.

Note: For ports at which you have set the number of link changes to the value of 1, note the following particularity:
If you have selected the "Disable Port" action, the device deactivates the port as early as after the 1st link change. The "Link Up" change also relates to this in the following instances:
If the device deactivated all the ports, you can only access the Switch via the V.24 access.

Parameters

Meaning

Link Flap Count

Number of link changes in the completed sampling interval that leads to an action by the device.

Sampling Interval [s]

Length of the sampling interval in which the device determines the number of link changes.

Port table

 

Port

List of the device's available ports.

Last Sampling Interval

Number of link changes during the last sampling interval. Link changes are also still counted after the port is deactivated.

Total

Sum of all link changes having occurred up to now. Link changes are also still counted after the port is deactivated.

Tab. Link Changes Port Monitor Table


You set the parameters for the “CRC/Fragments” conditions as follows:

Note: The parameters set apply to every port that you have activated the "CRC/Fragments" setting in the "Global" card index for.
Using the "Reload" button, you discard unsaved changes in every card index.
Using the "Set" button, you save the settings of every card index.
To reset the values in the table to 0, click the "Reset“button.

Parameters

Meaning

CRC/Fragments count [ppm]

Fragment error rate in the completed sampling interval that leads to an action by the device.

Sampling Interval [s]

Length of the sampling interval in which the device determines the CRC/fragment error rate.

Port table

 

Port

List of the device's available ports.

Last active Interval [ppm]

Detected error rate during the last active sampling interval that triggered the action.

Total [ppm]

Total error rate that has occurred so far in ppm (parts per million).

Tab. CRC/Fragments Port Monitor Table


You set the parameters for the overload conditions as follows:

Note: The parameters set apply to every port that you have activated the “Overload Detection” setting in the “Global” card index for.
Using the "Reload" button, you discard unsaved changes in every card index.
Using the "Set" button, you save the settings of every card index.

Parameters

Meaning

Sampling Interval [s]

Length of the sampling interval in which the device determines the amount of values below and above the permitted thresholds.

Port table

 

Port

List of the device's available ports.

Traffic Type

Defines the overload detection traffic type. The following types are possible:

  • all: The overload function uses unicast, broadcast and multicast traffic for threshold detection.

  • bc: The overload function uses broadcast traffic for threshold detection.

  • bc-mc: The overload function uses broadcast and multicast traffic for threshold detection.

Threshold Type

Defines the overload detection threshold type. The following types are possible:

  • pps - packets per second

Available on the MACH1040 and MACH104:

  • kbps - kilobits per second

  • link-capacity - percent of the link capacity

Lower Threshold

Defines the value at which the device auto-enables the port.

Upper Threshold

Defines the value at which the device auto-disables the port.

Tab. CRC/Fragments Port Monitor Table


Buttons

Button

Meaning

“Set”

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

“Reload”

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

“Reset”

Resets the port monitor function for the selected interface and enables the port when disabled by the Port Monitor function.

“Help”

Opens the online help.

Tab. Buttons