Dell EMC Configuration Guide for the S4048T–ON System 9.14.2.4

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LLDP-MED Capabilities TLV

The LLDP-MED capabilities TLV communicates the types of TLVs that the endpoint device and the network connectivity device support. LLDP-MED network connectivity devices must transmit the Network Policies TLV.

The value of the LLDP-MED capabilities field in the TLV is a 2–octet bitmap, each bit represents an LLDP-MED capability (as shown in the following table).
The possible values of the LLDP-MED device type are shown in the following. The Dell EMC Networking system is a network connectivity device, which is Type 4.

When you enable LLDP-MED in Dell EMC Networking OS (using the advertise med command), the system begins transmitting this TLV.

Illustration of LLDP-MED capabilities TLV. — Figure 1. LLDP-MED Capabilities TLV

Table 1. Dell EMC Networking OS LLDP-MED CapabilitiesDell EMC Networking OS LLDP-MED Capabilities
Bit Position	TLV	Dell EMC Networking OS Support
0	LLDP-MED Capabilities	Yes
1	Network Policy	Yes
2	Location Identification	Yes
3	Extended Power via MDI-PSE	Yes
4	Extended Power via MDI-PD	No
5	Inventory	No
6–15	reserved	No

Table 2. LLDP-MED Device TypesLLDP-MED Device Types
Value	Device Type
0	Type Not Defined
1	Endpoint Class 1
2	Endpoint Class 2
3	Endpoint Class 3
4	Network Connectivity
5–255	Reserved