3com 5500-ei pwr Installation Instruction

 

1-10 

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When connecting two DLDP-enabled devices, make sure the software running on them is of the 

same version. Otherwise, DLDP may operate improperly. 

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When you use the dldp enable/dldp disable command in system view to enable/disable DLDP on 

all optical ports of the switch, the configuration takes effect on the existing optical ports, instead of 

those added subsequently. 

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Make sure the authentication mode and password configured on both sides are the same for DLDP 

to operate properly. 

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When DLDP works in enhanced mode, the system can identify two types of unidirectional links: 

one is caused by fiber cross-connection and the other is caused by one fiber being not connected 

or being disconnected. 

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When DLDP works in normal mode, the system can identify unidirectional links caused by fiber 

cross-connection. 

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When the device is busy with services and the CPU utilization is high, DLDP may issue mistaken 

reports. You are recommended to configure the operating mode of DLDP as manual after 

unidirectional links are detected, so as to reduce the influence of mistaken reports. 

You can reset the DLDP state for the ports shut down by DLDP due to unidirectional links to enable 

DLDP detection again. 

 

This function is only applicable to ports that are in DLDP down state. 

 

Follow these steps to reset DLDP state: 

Reset DLDP state for all the 
ports shut down by DLDP 

interface interface-type 
interface-number  

Reset the DLDP state for a port 
shut down by DLDP 

Select either of the two. 

 

Display the DLDP configuration 
of a unit or a port  

display dldp { unit-id | 
interface-type interface-number } 

Available in any view.