Regarding connected endpoint devices, LLDP-MED provides network connectivity devices with the abilityto:• manage inventory• manage Power over Ethernet (PoE)• identify physical location• identify network policyLLDP-MED is designed for, but not limited to, VoIP endpoints.TIA Organizationally Specific TLVsThe 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 advertiseThe following table describes the five types of TIA-1057 Organizationally Specific TLVs.Table 25. TIA-1057 (LLDP-MED) Organizationally Specific TLVsType SubType TLV Description127 1 LLDP-MED Capabilities Indicates:• whether thetransmitting devicesupports LLDP-MED• what LLDP-MEDTLVs it supports• LLDP device class127 2 Network Policy Indicates the applicationtype, VLAN ID, Layer 2Priority, and DSCP value.127 3 Location Identification Indicates that thephysical location of thedevice expressed in oneof three possibleformats:• Coordinate BasedLCI• Civic Address LCI• Emergency CallServices ELIN127 4 Location Identification Indicates powerrequirements, priority,and power status.Inventory ManagementTLVsImplementation of thisset of TLVs is optional inLLDP-MED devices.Link Layer Discovery Protocol (LLDP) 465
