Operation Manual – DLDPH3C S3610&S5510 Series Ethernet Switches Chapter 1 DLDP Configuration1-17DLDP interval : 6sDLDP work-mode : enhanceDLDP authentication-mode : noneDLDP unidirectional-shutdown : autoDLDP delaydown-timer : 2sThe number of enabled ports is 2.Interface GigabitEthernet1/1/1DLDP port state : disableDLDP link state : downThe neighbor number of the port is 0.Interface GigabitEthernet1/1/2DLDP port state : disableDLDP link state : downThe neighbor number of the port is 0.The output information indicates that both GigabitEthernet 1/1/1 and GigabitEthernet1/1/2 are in Disable state and the links are down, which means unidirectional links aredetected and the two ports are thus shut down.# Reset DLDP state for the ports shut down by DLDP.[DeviceA] dldp reset2) Configuration on Device BThe configuration on Device B is the same as that on Device A and is thus omitted.Note:If two fibers are cross-connected, all the four ports involved will be shut down by DLDP.1.5 TroubleshootingSymptom:Two DLDP-enabled devices, Device A and Device B, are connected through two fiberpairs, in which two fibers are cross-connected. The unidirectional links cannot bedetected; all the four ports involved are in Advertisement state.Analysis:The problem can be caused by the following.z The intervals for sending Advertisement packets on Device A and Device B arenot the same.
