Configuring Dldp Authentication; Resetting Dldp State - 3Com 4500G Family Configuration Manual

Configuring DLDP Authentication

You can guard your network against attacks and vicious 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.
Follow these steps to configure DLDP authentication:
To do...
Enter system view
Configure DLDP
authentication
To enable DLDP to operate properly, make sure the DLDP authentication modes and the passwords of
the 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 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 in 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 the port is shut down by DLDP automatically, run the dldp reset command on the port.
Alternatively, you can leave the work to DLDP, which can enable the port automatically upon
detecting that the link has been restored to bidirectional. For how to reset DLDP state with the dldp
reset command, refer to
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 the ports shut down by DLDP.
Follow these steps to reset DLDP in system view:
To do...
Enter system view
Reset DLDP state
Use the command...
system-view
dldp authentication-mode
{ md5 md5-password | none |
simple simple-password }
Resetting DLDP State in System View
View.
Use the command...
system-view
dldp reset
—
Required
none by default
1-12
Remarks
and Resetting DLDP State in Port
Remarks
—
Required