Troubleshooting - H3C S3610-28P Operation Manual

Operation Manual – DLDP
H3C S3610&S5510 Series Ethernet Switches
DLDP interval : 6s
DLDP work-mode : enhance
DLDP authentication-mode
DLDP unidirectional-shutdown : auto
DLDP delaydown-timer : 2s
The number of enabled ports is 2.
Interface GigabitEthernet1/1/1
DLDP port state : disable
DLDP link state : down
The neighbor number of the port is 0.
Interface GigabitEthernet1/1/2
DLDP port state : disable
DLDP link state : down
The neighbor number of the port is 0.
The output information indicates that both GigabitEthernet 1/1/1 and GigabitEthernet
1/1/2 are in Disable state and the links are down, which means unidirectional links are
detected and the two ports are thus shut down.
# Reset DLDP state for the ports shut down by DLDP.
[DeviceA] dldp reset
2) Configuration on Device B
The 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 Troubleshooting

Symptom:
Two DLDP-enabled devices, Device A and Device B, are connected through two fiber
pairs, in which two fibers are cross-connected. The unidirectional links cannot be
detected; all the four ports involved are in Advertisement state.
Analysis:
The problem can be caused by the following.
The intervals for sending Advertisement packets on Device A and Device B are
not the same.
: none
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Chapter 1 DLDP Configuration