3Com Switch 7750 Configuration Guide

DLDP Network Example 223
# Set the interval of sending DLDP packets to 15 seconds
[SW7750A] dldp interval 15
# Configure DLDP to work in enhanced mode
[SW7750A] dldp work-mode enhance
# Set the DLDP handling mode to auto after unidirectional links are detected
[SW7750A] dldp unidirectional-shutdown auto
# Display the DLDP status
[SW7750A] display dldp
n
If the fibers are correctly connected between the two switches, the system displays
the connections with the neighbor as bidirectional links.
When the fibers are not correctly connected:
■ When the fibers are cross-connected, both ends are unidirectional links and the
two ends are displayed as in Disable status;
■ When one end is correctly connected and the other end is not connected, one
end is in Advertisement status and the other is in Inactive status.
# Restore the ports taken down by DLDP
[SW7750A] dldp reset
2 Configure Switch B
The configuration of Switch B is the same to that of Switch A.
n
Suppose the port works in the mandatory full duplex mode and the connection at
both ends of the link is normal. After DLDP is enabled, if the optical fiber in one
end is not connected, DLDP will report that the link is a unidirectional link.