Dldp Configuration Task List - 3Com S7906E Configuration Manual

RecoverEcho packet. Upon receiving the RecoverEcho packet, the local port checks whether neighbor
information in the RecoverEcho packet is the same as the local port information. If they are the same,
the link between the local port and the neighbor is considered to have been restored to a bidirectional
link, and the port will transit from Disable state to Active state and re-establish neighborship with the
neighbor.
Only DLDP down ports can send and process Recover packets, including RecoverProbe packets and
RecoverEcho packets. The auto-recovery mechanism does not take effect on ports manually shut
down.
DLDP neighbor state
A DLDP neighbor can be in one of the three states described in
Table 1-7 Description on DLDP neighbor states
DLDP neighbor
state
Unknown
Two way
Unidirectional

DLDP Configuration Task List

Complete the following tasks to configure DLDP:
Enabling DLDP
Setting DLDP Mode
Setting the Interval for Sending Advertisement Packets
Setting the DelayDown Timer
Setting the Port Shutdown Mode
Configuring DLDP Authentication
Resetting DLDP State
Note that:
DLDP takes effects only on Ethernet interfaces.
DLDP can detect unidirectional links only after all links are connected. Therefore, before enabling
DLDP, make sure that optical fibers or copper twisted pairs are connected.
To ensure unidirectional links can be detected, make sure these settings are the same on the both
sides: DLDP state (enabled/disabled), the interval for sending Advertisement packets,
authentication mode, and password.
A neighbor is in this state when it is just detected and is being probed. No
information indicating the state of the neighbor is received. A neighbor is in
this state only when it is being probed. It transits to Two way state or
Unidirectional state after the probe operation finishes.
A neighbor is in this state after it receives response from its peer. This state
indicates the link is a two-way link.
A neighbor is in this state when the link connecting it is detected to be a
unidirectional link. After a device transits to this state, the corresponding
neighbor entries maintained on other devices are removed.
Task
1-8
Table 1-7.
Description
Required
Optional
Optional
Optional
Optional
Optional
Optional
Remarks