DGS-1510/ME Series Metro Ethernet Switch CLI Reference Guide
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Chapter 23
D-Link Unidirectional Link
Detection (DULD) Command List
config duld ports
[<portlist> | all ] {state [enable | disable] | mode [shutdown | normal] | discovery_time <sec 5-
65535>}(1)
show duld ports {<portlist>}
23-1
config duld ports
Description
The command is used to configure unidirectional link detection on ports. Unidirectional link detection provides
discovery mechanism based on 802.3ah to discovery its neighbor. If the OAM discovery can complete in
configured discovery time, it concludes the link is bidirectional. Otherwise, it starts detecting task to detect the link
status.
Format
config duld ports [<portlist> | all ] {state [enable | disable] | mode [shutdown | normal] | discovery_time
<sec 5-65535>}(1)
Parameters
<portlist>
- Enter a range of ports.
all
- Specifies to select all ports.
state
- Specifies these ports unidirectional link detection status.
enable
- Specifies to enable unidirectional link detection status.
disable
- Specifies to disable unidirectional link detection status.
mode
- Specifies the mode when detecting unidirectional link.
shutdown
- Specifies to disable the port and log an event when any unidirectional link is detected.
normal
- Specifies to only log an event when a unidirectional link is detected.
discovery_time
- Specifies these ports neighbor discovery time. If OAM discovery cannot complete in the
discovery time, the unidirectional link detection will start.
<sec 5-65535>
- Enter a time in second. The default discovery time is 5 seconds.
Restrictions
Only Administrators, Operators and Power-Users can issue this command.
Example
To enable unidirectional link detection on port 1:
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