QTECH QSW-2800 Инструкция по настройке - Manual (Page 113)

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14.4 LLDP-MED Troubleshooting
If problems occur when configuring LLDP-MED, please check whether the problem is caused
by the following reasons:
Check whether the global LLDP is enabled.
Only network connection device received LLDP packets with LLDP-MED TLV from the near
MED device, it sends LLDP-MED TLV. If network connection device configured the command
for sending LLDP-MED TLV, the packets also without LLDP-MED TLV sent by the port, that
means no MED information is received and the port does not enable the function for sending
LLDP-MED information.
If neighbor device has sent LLDP-MED information to network connection device, but there is
no LLDP-MED information by checking show lldp neighbors command, that means LLDP-
MED information sent by neighbor is error.