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DGS-3400 Series Layer 2 Gigabit Ethernet Managed Switch CLI Manual
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show duld
1. Unknown: either local or remote do not support OAM or unidirectional detection.
2. Bidirectional
3. TX Fault
4. RX Fault
5. Link Down
Oper Status:
indicates the detection is operational or not.
1. Enabled: the port supports OAM and unidirectional detection and discover remote
peer supporting this detection capability.
2. 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-3450:admin# config duld ports 1,2,4 state enable
Commands: config duld ports 1,2,4 state enable
Success
DGS-3450: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-3450:admin#