DGS-1510/ME Series Metro Ethernet Switch CLI Reference Guide
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Chapter 40
Loop Back Detection (LBD)
Command List
config loopdetect
{recover_timer [<value 0> | <sec 60-1000000>] | interval <sec 1-32767> | mode [port-based |
vlan-based]}
config loopdetect ports
[<portlist> | all] state [enable | disable]
enable loopdetect
disable loopdetect
show loopdetect
show loopdetect ports
{<portlist>}
config loopdetect trap
[none | loop_detected | loop_cleared | both]
config loopdetect log
state [enable | disable]
40-1
config loopdetect
Description
This command is used to setup the loop-back detection function (LBD) for the entire Switch.
Format
config loopdetect {recover_timer [<value 0> | <sec 60-1000000>] | interval <sec 1-32767> | mode [port-
based | vlan-based]}
Parameters
recover_timer
- (Optional) Specifies 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. The default value is 60 seconds.
<value 0>
- Enter 0 to disable the auto-recovery mechanism. 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) Specifies 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 value is 10 seconds.
<sec - 1-32767>
- Enter the time interval value here. This value must be between 1 and 32767 seconds.
mode
- (Optional) Specifies 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
- Specifies that the loop-detection operation mode will be set to port-based mode.
vlan-based
- Specifies that the loop-detection operation mode will be set to VLAN-based mode.
Restrictions
Only Administrators, Operators and Power-Users can issue this command.
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