Hirschmann GREYHOUND GRS1020, Справочное руководство

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Operation diagnosis
13.7 Auto-Disable
204
UM Config GRS
Release 8.0 09/2019
13.7 Auto-Disable
The device can disable a port due to several configurable reasons. Each reason causes the port to
“shut down”. In order to recover the port from the shut down state, you can manually clear the
condition which caused the port to shut down or specify a timer to automatically re-enable the port.
If the configuration displays a port as enabled, but the device detects an error or change in the
condition, then the software shuts down that port. In other words, the device software disables the
port because of a detected error or change in the condition.
If a port is auto-disabled, then the device effectively shuts down the port and the port blocks traffic.
The port LED blinks green 3 times per period and identifies the reason for the shutdown. In addition,
the device creates a log file entry which lists the causes of the deactivation. When you re-enable
the port after a timeout using the Auto-Disable function, the device generates a log entry.
The Auto-Disable function provides a recovery function which automatically enables an auto-
disabled port after a user-defined time. When this function enables a port, the device sends an
SNMP trap with the port number, but without a value for the Reason parameter.
The Auto-Disable function serves the following purposes:

It assists the network administrator in port analysis.

It reduces the possibility that this port causes the network to be instable.
The Auto-Disable function is available for the following functions:

Link flap ( Port Monitor function)

CRC/Fragments ( Port Monitor function)

Duplex Mismatch detection ( Port Monitor function)

Spanning Tree

Port Security

Overload detection ( Port Monitor function)

Link speed/Duplex mode detection ( Port Monitor function)
In the following example, you configure the device to disable a port due to detected violations to the
thresholds specified the Diagnostics > Ports > Port Monitor dialog, CRC/Fragments tab, and then
automatically re-enable the disabled port.
Perform the following steps:

Open the
Diagnostics > Ports > Port Monitor
dialog,
CRC/Fragments
tab.

Verify that the thresholds specified in the table concur to your preferences for port 1/1 .

Open the
Diagnostics > Ports > Port Monitor
dialog,
Global
tab.

To enable the function, select the
On
radio button in the
Operation
frame.

To allow the device to disable the port due to detected errors, mark the checkbox in the
CRC/Fragments on
column for port 1/1 .