Dldp Configuration - 3Com 4510G Configuration Manual

4

DLDP Configuration

When performing DLDP configuration, go to these sections for information you are interested in:
Overview
DLDP Configuration Task List
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
Displaying and Maintaining DLDP
DLDP Configuration Example
Troubleshooting
Overview
Background
Sometimes, unidirectional links may appear in
packets from the other end but the other end cannot. Unidirectional links result in problems such as
loops in an STP-enabled network.
As for fiber links, two kinds of unidirectional links exist. One occurs when fibers are cross-connected,
as shown in Figure
fiber pair gets disconnected, as illustrated by the hollow arrows in
Figure 4-1 Unidirectional fiber link: cross-connected fibers
Device A
GE1/0/50
GE1/0/50
Device B
4-1. The other occurs when one end of a fiber is not connected or one fiber of a
GE1/0/51
GE1/0/51
PC
networks. On a unidirectional link, one end can receive
Figure
4-1
4-2.