Setting The Port Shutdown Mode; Configuring Dldp Authentication - HP 5900 Series Configuration Manual

Setting the port shutdown mode

On detecting a unidirectional link, the ports can be shut down in one of the following modes:
• Auto mode—When a unidirectional link is detected, DLDP changes the DLDP port state to
Unidirectional. The unidirectional port periodically sends RecoverProbe packets. When a correct
RecoverEcho packet is received, the link is restored to a bidirectional link, and the port state
changes from Unidirectional to Bidirectional. This process is called "link auto-recovery
mechanism."
Manual mode—When a unidirectional link is detected, DLDP does not shut down the port, and you
•
need to manually shut it down. When the link state is restored to Bidirectional, you must manually
bring up the port. If the network performance is low, the device is busy, or the CPU usage is high,
use this mode to prevent normal links from being shut down because of false unidirectional link
reports.
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. This causes remote OAM
loopback failure. To prevent this, set the port shutdown mode to manual mode. For more information
about Ethernet OAM, see
To set port shutdown mode:
Step
1. Enter system view.
Set port shutdown mode.
2.

Configuring DLDP authentication

You can guard your network against attacks and malicious probes by configuring an appropriate DLDP
authentication mode, which can be plain text authentication or MD5 authentication. If your network is
safe, you can choose not to authenticate.
To configure DLDP authentication:
Step
1. Enter system view.
2. Configure a DLDP
authentication mode.
3. Configure the password for
DLDP authentication.
"Configuring Ethernet
Command
system-view
dldp unidirectional-shutdown
{ auto | manual }
Command
system-view
dldp authentication-mode { md5 |
none | simple }
dldp authentication-password
{ cipher cipher | simple simple }
31
OAM."
Remarks
N/A
The default mode is auto.
Remarks
N/A
The default authentication mode is
none.
By default, no password is
configured for DLDP
authentication.
If you do not configure the
authentication password after you
configure the authentication mode,
the authentication mode is none no
matter which authentication mode
you configure.