Concept Guide

Type TLV Description
in the Dell EMC Networking OS
implementation of LLDP, but is available and
mandatory (non-congurable) in the LLDP-
MED implementation.
127 Power via MDI Dell EMC Networking supports the LLDP-
MED protocol, which recommends that
Power via MDI TLV be not implemented, and
therefore Dell EMC Networking implements
Extended Power via MDI TLV only.
127 Link Aggregation Indicates whether the link is capable of
being aggregated, whether it is currently in a
LAG, and the port identication of the LAG.
Dell EMC Networking OS does not currently
support this TLV.
127 Maximum Frame Size Indicates the maximum frame size capability
of the MAC and PHY.
TIA-1057 (LLDP-MED) Overview
Link layer discovery protocol — media endpoint discovery (LLDP-MED) as dened by ANSI/ TIA-1057— provides additional organizationally
specic TLVs so that endpoint devices and network connectivity devices can advertise their characteristics and conguration information;
the OUI for the Telecommunications Industry Association (TIA) is 00-12-BB.
• LLDP-MED Endpoint Device — any device that is on an IEEE 802 LAN network edge can communicate using IP and uses the LLDP-
MED framework.
• LLDP-MED Network Connectivity Device — any device that provides access to an IEEE 802 LAN to an LLDP-MED endpoint device
and supports IEEE 802.1AB (LLDP) and TIA-1057 (LLDP-MED). The Dell EMC Networking system is an LLDP-MED network
connectivity device.
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 Specic TLVs
The Dell EMC 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 ve types of TIA-1057 Organizationally Specic TLVs.
566
Link Layer Discovery Protocol (LLDP)