3Com S7906E - Switch, Configuration Manual

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DelayDown timer setting applies to all DLDP-enabled ports.
Setting the Port Shutdown Mode
On detecting a unidirectional link, the ports can be shut down in one of the following two modes.
z
Manual mode. This mode applies to networks with low performance, where normal links may be
treated as unidirectional links. It protects service packet transmission against false unidirectional
links. In this mode, DLDP only detects unidirectional links and generates log and traps. The
operations to shut down unidirectional link ports are accomplished by the administrator.
z
Auto mode. In this mode, when a unidirectional link is detected, DLDP transits to Disable state,
generates log and traps, and set the port as DLDP Down.
Follow these steps to set port shutdown mode:
To do… Use the command… Remarks
Enter system view system-view —
Set port shutdown mode
dldp unidirectional-shutdown
{ auto | manual }
Optional
auto by default
z
On a port with both remote OAM loopback and DLDP enabled, if the port shutdown mode is auto
mode, the port will be shut down by DLDP when it receives a packet sent by itself, causing remote
OAM loopback to operate improperly. To prevent this, you need to set the port shutdown mode to
auto mode.
z
If the device is busy, or the CPU utilization is high, normal links may be treated as unidirectional
links. In this case, you can set the port shutdown mode to manual mode to eliminate the effects
caused by false unidirectional link report.
Configuring DLDP Authentication
Follow these steps to configure DLDP authentication:
To do… Use the command… Remarks
Enter system view system-view —
Configure DLDP
authentication
dldp authentication-mode
{ md5 md5-password | none |
simple simple-password }
Required
none by default