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Note: 
For detailed introduction of TLV, please refer to IEEE 802.1AB standard.   
In TP-LINK switch, the following LLDP optional TLVs are supported. 
Port Description TLV 
The Port Description TLV allows network management to 
advertise the IEEE 802 LAN station's port description. 
System Capabilities TLV  The System Capabilities TLV identifies the primary functions of 
the system and whether or not these primary functions are 
enabled. 
System Description TLV  The System Description TLV allows netw
advertise the system's description, which should include the full 
name and version identification of the system's hardware type, 
software operating system, and networking software. 
System Name TLV  The System Name TLV allows network manag
ement to 
advertise the system's assigned name, which should be the 
system's fully qualified domain name. 
TLV 
The Management Address TLV identifies an address 
associated with the local LLDP agent that may be used to reach 
higher entities to assist discovery by network management. 
Port VLAN ID TLV 
The Port VLAN ID TLV allows a VLAN bridge port to advertise 
the port's VLAN identifier (PVID) that will be associated with 
untagged or priority tagged frames. 
Port And Protocol VLAN 
The 
Port And Protocol VLAN ID TLV allows a bridge port to 
advertise a port and protocol VLAN ID. 
VLAN Name TLV  The VLAN Name TLV allows an IEEE 802.1Q-
802 LAN station to advertise the assigned name of any VLAN 
with which it is configured. 
Link Aggregation TLV  The Link Aggregation TLV indicates whether the link is capable 
of being aggregated, whether the link is currently in an 
aggregation, and if in an aggregation, the port identification of 
MAC/PHY 
TLV 
The MAC/PHY Configuration/Status TLV identifies: a)The duplex 
and bit-
rate capability of the sending IEEE 802.3 LAN node that 
is connected to the physical medium; b)The current duplex and 
bit-
rate settings of the sending IEEE 802.3 LAN node; 
c)Whether these settings are the result of auto-negotiation 
during link initiation or of manual set override action. 
Max Frame Size TLV 
The Maximum Frame Size TLV indicates the maximum frame 
size capability of the implemented MAC and PHY.