QTECH QSW-3400 Инструкция по настройке - Manual (Page 126)

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SysName :****
SysDesc :*****
SysCapSupported :4
SysCapEnabled :4
Explanation:
1. Both Ethernet2 of switch A and Ethernet1 of switch B are the ports of network connection
device, they will not send LLDP packets with MED TLV information forwardly. Although
configure Ethernet1 of switch B to send MED TLV information, it will not send the related
MED information, that results the corresponding Remote table without the related MDE
information on Ethernet2 of switch A.
2. LLDP-MED device is able to send LLDP packets with MED TLV forwardly, so the
corresponding Remote table with LLDP MED information on Ethernet1 of switch A.
15.4 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.