Loop-Back Detection Commands - D-Link xStack DES-3528 Series Cli Reference Manual

xStack® DES-3528/DES-3552 Series Layer 2 Managed Stackable Fast Ethernet Switch CLI Reference Guide

Loop-back Detection Commands

The Loop-back Detection commands in the Command Line Interface (CLI) are listed (along with the appropriate
parameters) in the following table.
Command
config loopdetect
config loopdetect ports
config loopdetect trap
enable loopdetect
disable loopdetect
show loopdetect
show loopdetect ports
config loopdetect log
state
Each command is listed, in detail, in the following sections.
config loopdetect
Purpose
Syntax
Description
Parameters
Restrictions
Example usage:
To set the recover time to 0, and interval to 20, and VLAN-based mode:
Parameters
{recover_timer [0 | <sec 60-1000000>] | interval <sec 1-32767> | mode [port-based |
vlan-based]}
[<portlist> | all] state [enable | disable]
[none | loop_detected | loop_cleared | both]
{<portlist>}
[enable | disable]
Used to configure loop-back detection on the Switch.
config loopdetect {recover_timer [0 | <sec 60-1000000>] | interval <sec 1-32767> |
mode [port-based | vlan-based]}
This command is used to configure loop-back detection on the Switch.
recover_timer - (Optional) The time interval (in seconds) used by the Auto-Recovery
mechanism to decide how long to check before determining that the loop status has gone.
The valid range is from 60 to 1000000. 0 is a special value that specifies that the auto-
recovery mechanism should be disabled. When the auto-recovery mechanism is disabled, a
user would need to manually recover a disabled port. The default value for the recover timer
is 60 seconds.
0 - 0 is a special value that specifies that the auto-recovery mechanism should be disabled.
When the auto-recovery mechanism is disabled, a user would need to manually recover a
disabled port.
<sec 60-1000000> - Enter the recovery timer value here. This value must be between 60 and
1000000 seconds.
interval - (Optional) The time interval (in seconds) that the device will transmit all the CTP
(Configuration Test Protocol) packets to detect a loop-back event. The default setting is 10
seconds. The valid range is from 1 to 32767 seconds.
<sec - 1-32767> - Enter the time interval value here. This value must be between 1 and
32767 seconds.
mode - (Optional) Specify the loop-detection operation mode. In port-based mode, the port
will be shut down (disabled) when loop has been detected In VLAN-based mode, the port
cannot process the packets of the VLAN that has detected the loop.
port-based - Specify that the loop-detection operation mode will be set to port-based mode.
vlan-based - Specify that the loop-detection operation mode will be set to vlan-based mode.
Only Administrator and Operator and Power-User-level users can issue this command.
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