Configuring Dldp Authentication; Resetting Dldp State - HP A5830 series Configuration Manual

To do...
•
Set port shutdown mode
If the device is busy, or the CPU usage is high, normal links may be treated as unidirectional links. In this
case, you can set the port shutdown mode to manual mode to alleviate the impact caused by false
unidirectional link report.

Configuring DLDP authentication

You can guard your network against attacks and malicious probes by configuring an appropriate DLDP
authentication mode, which can be clear text authentication or MD5 authentication. If your network is
safe, you can choose not to authenticate.
To configure DLDP authentication:
To do...
• Enter system view
• Configure DLDP
authentication
To enable DLDP to operate properly, make sure that DLDP authentication modes and passwords on both
sides of a link are the same.

Resetting DLDP state

After DLDP detects a unidirectional link on a port, the port enters Disable state. In this case, DLDP
prompts you to shut down the port manually or it shuts down the port automatically depending on the
user-defined port shutdown mode. To enable the port to perform DLDP detect again, you can reset the
DLDP state of the port by using one of the following methods:
If the port is shut down with the shutdown command manually, run the undo shutdown command
•
on the port.
If DLDP automatically shuts down the port, run the dldp reset command on the port to enable the
•
port to perform DLDP detection again. Another option is to wait for DLDP to enable the port
automatically when it detects that the link has been restored to bidirectional. For how to reset the
DLDP state by using the dldp reset command, see
"Resetting DLDP state in interface view/port group
The DLDP state that the port transits to upon the DLDP state reset operation depends on its physical state.
If the port is physically down, it transits to Inactive state. If the port is physically up, it transits to Active
state.
Resetting DLDP state in system view
Resetting DLDP state in system view applies to all ports of the device.
To reset DLDP in system view:
To do...
•
Enter system view
Use the command...
dldp unidirectional-shutdown { auto |
manual }
Use the command...
system-view
dldp authentication-mode { md5
md5-password | none | simple
simple-password }
Use the command...
system-view
45
Remarks
Optional
auto by default
Remarks
—
Required
none by default
"Resetting DLDP state in system
view."
Remarks
—
view" and