Port Monitor

The Port Monitor monitors the ports of the device. When an event occurs, the device performs an action for the port, e.g. if there are too many connection breaks due to a loose contact.

Global

On the “Global” tab you define the triggering events and an action for the ports to be monitored:

Tab. Port Monitor Global table

Parameter

Meaning

“Operation” Frame

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

Port table

 

Port

List of the available ports on the device.

Port Monitor on

You select the ports to be monitored here.

Link Changes on

You select here whether link changes trigger an action. Changes from the “Link down” state to “Link up” are treated as link changes.

CRC/Fragment Error 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.

“Link Speed and Duplex Mode on”

You select here whether an incorrect combination of duplex mode and transmission speed 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 that the device performs when the triggering event occurs. The following actions are possible:

  • Disable port

    Disables the port. Then the port LED on the device blinks green 3 times per period.

    The device re-enables the port when you have defined the following settings in the Diagnostics:Ports:Auto Disable dialog.

    • In the “Configuration” frame, the checkbox is marked for the triggering event that disabled the port.

    • The reset timer is defined > 0 for the port.

  • Send trap

    Sends an SNMP trap. The port remains enabled.

  • Auto Disable

    Disables the port depending on the settings on the Diagnostics:Ports:Auto Disable dialog, “Configuration” frame.

    • The device disables the port when the checkbox for the triggering event is marked. Then the port LED on the device blinks green 3 times per period.

      The device re-enables the port when the reset timer for the port is defined >0 in the Diagnostics:Ports:Auto Disable dialog for the port.

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

    • The port remains enabled when the checkbox for the triggering event is unmarked.

Port Status

Displays the current port status.

  • up: data transmission via the port is possible.

  • down: data transmission via the port is interrupted.

  • notPresent: no physical port is present.


Link Flap

On the “Link Flap” tab, define the parameters on the basis of which the device triggers an action for the relevant port if there are too many link changes:

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.

Tab. Link Changes Port Monitor Table

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.


CRC/Fragments

On the “CRC-/Fragments” tab, define the parameters on the basis of which the device triggers an action for the relevant port if too many faulty Ethernet packets are received:

Tab. CRC/Fragments Port Monitor Table

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).


Overload Detection

On the “Overload Detection” tab, define the parameters on the basis of which the device triggers an action for the relevant port if there is an overload.

Tab. CRC/Fragments Port Monitor Table

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.


Speed Duplex

On the “Speed Duplex” tab, you define the permitted combinations of speed and duplex mode. If the device detects an unpermitted combination of speed and duplex mode, it triggers an action for the relevant port:

Note: The port monitor monitors the speed and the duplex mode exclusively on enabled physical ports.

Tab. Port-Monitor Speed Duplex table

Parameters

Meaning

Port

List of the device's available ports.

hdx-10

Activates/deactivates the port monitor to accept a half-duplex and 10 Mbit/s data rate combination on the port.

Possible values:

  • marked (default setting)

    The port monitor allows the speed and duplex combination.

  • unmarked

    If the port monitor detects the speed and duplex combination on the port, then the device executes the action specified in the “Global” tab.

fdx-10

Activates/deactivates the port monitor to accept a full-duplex and 10 Mbit/s data rate combination on the port.

Possible values:

  • marked (default setting)

    The port monitor allows the speed and duplex combination.

  • unmarked

    If the port monitor detects the speed and duplex combination on the port, then the device executes the action specified in the “Global” tab.

hdx-100

Activates/deactivates the port monitor to accept a half-duplex and 100 Mbit/s data rate combination on the port.

Possible values:

  • marked (default setting)

    The port monitor allows the speed and duplex combination.

  • unmarked

    If the port monitor detects the speed and duplex combination on the port, then the device executes the action specified in the “Global” tab.

fdx-100

Activates/deactivates the port monitor to accept a full-duplex and 100 Mbit/s data rate combination on the port.

Possible values:

  • marked (default setting)

    The port monitor allows the speed and duplex combination.

  • unmarked

    If the port monitor detects the speed and duplex combination on the port, then the device executes the action specified in the “Global” tab.

hdx-1000

Activates/deactivates the port monitor to accept a half-duplex and 1 Gbit/s data rate combination on the port.

Possible values:

  • marked (default setting)

    The port monitor allows the speed and duplex combination.

  • unmarked

    If the port monitor detects the speed and duplex combination on the port, then the device executes the action specified in the “Global” tab.

fdx-1000

Activates/deactivates the port monitor to accept a full-duplex and 1 Gbit/s data rate combination on the port.

Possible values:

  • marked (default setting)

    The port monitor allows the speed and duplex combination.

  • unmarked

    If the port monitor detects the speed and duplex combination on the port, then the device executes the action specified in the “Global” tab.

fdx-10000

Available on the MACH4002 24G/48G and MACH104:

Activates/deactivates the port monitor to accept a full-duplex and 10 Gbit/s data rate combination on the port.

Possible values:

  • marked (default setting)

    The port monitor allows the speed and duplex combination.

  • unmarked

    If the port monitor detects the speed and duplex combination on the port, then the device executes the action specified in the “Global” tab.


Buttons

Tab. Buttons (Forts.)

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.