Regarding connected endpoint devices, LLDP-MED provides network connectivity devices with the ability
to:
• manage inventory
• manage Power over Ethernet (PoE)
• identify physical location
• identify network policy
LLDP-MED is designed for, but not limited to, VoIP endpoints.
TIA Organizationally Specific TLVs
The Dell Networking system is an LLDP-MED Network Connectivity Device (Device Type 4).
Network connectivity devices are responsible for:
• transmitting an LLDP-MED capability TLV to endpoint devices
• storing the information that endpoint devices advertise
The following table describes the five types of TIA-1057 Organizationally Specific TLVs.
Table 36. TIA-1057 (LLDP-MED) Organizationally Specific TLVs
Type SubType TLV Description
127 1 LLDP-MED Capabilities Indicates:
• whether the
transmitting device
supports LLDP-MED
• what LLDP-MED
TLVs it supports
• LLDP device class
127 2 Network Policy Indicates the application
type, VLAN ID, Layer 2
Priority, and DSCP value.
127 3 Location Identification Indicates that the
physical location of the
device expressed in one
of three possible
formats:
• Coordinate Based
LCI
• Civic Address LCI
• Emergency Call
Services ELIN
127 4 Location Identification Indicates power
requirements, priority,
and power status.
Inventory Management
TLVs
Implementation of this
set of TLVs is optional in
LLDP-MED devices.
548 Link Layer Discovery Protocol (LLDP)