3com 4210 User Manual

The configuration on Switch B is the same as that on Switch A.

1 When enabling DLDP on two connected devices, make sure that they are using the 

same software version. Otherwise, DLDP may malfunction.

2 When optical fibers are cross-connected, two or three ports are in the disable 

state, and the remaining ports are in the inactive state.

3 DLDP in the enhanced mode can identify unidirectional links caused by fiber 

cross-connection or fiber cut.

4 DLDP in the normal mode can identify only unidirectional links caused by fiber 

cross-connection.

5 You are recommended to set the Delaydown timer to 5 seconds on the 

DLDP-enabled devices that are connected with each other.