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DGS-3600 Series Layer 3 Gigabit Ethernet Managed Switch CLI Manual
253
show duld
Purpose Used to show unidirectional link detection information
Syntax
show duld ports {<portlist>}
Description The command used to show ports unidirectional link information including:
Admin state: port’s unidirectional link detection configuration state.
Discovery Time: the neighbor discovery timer.
Link Status: port’s link detection result. It maybe
Unknown: either local or remote do not support OAM or unidirectional detection.
Bidirectional
TX Fault
RX Fault
Link Down
Oper Status: indicates the detection is operational or not.
Enabled: the port supports OAM and unidirectional detection and discover remote peer
supporting this detection capability.
Disabled: either local or remote do not support OAM or unidirectional detection.
So we should enable OAM when we need to detect the unidirectional link.
Parameters
<portlist> - Specify a range of ports to display.
If no port specified, all ports will be displayed.
Restrictions Only Administrator and Operator-level users can issue this command.
Example usage:
To show ports 1-4 unidirectional link detection information:
DGS-3627:admin# config duld ports 1,2,4 state enable
Commands: config duld ports 1,2,4 state enable
Success
DGS-3627:admin# show duld ports 1-4
Commands: show duld ports 1-4
port Admin State Oper Status Mode Link Status Discovery Time(Sec)
---- ----------- ----------- ---------- -------------- -------------------
1 Enabled Enabled Shutdown Bidirectional 5
2 Enabled Enabled Normal RX Fault 5
3 Enabled Enabled Normal TX Fault 5
4 Disabled Disabled Normal Unknown 5
5 Enabled Enabled Normal Link Down 5
DGS-3627:admin#