Tia-1057 (Lldp-Med) Overview; Tia Organizationally Specific Tlvs - Dell Force10 Z9000 Configuration Manual

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TIA-1057 (LLDP-MED) Overview

Link layer discovery protocol — media endpoint discovery (LLDP-MED) as defined by ANSI/ TIA-1057— provides additional
organizationally specific TLVs so that endpoint devices and network connectivity devices can advertise their characteristics and
configuration 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 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 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 25. TIA-1057 (LLDP-MED) Organizationally Specific TLVs
Type
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Link Layer Discovery Protocol (LLDP)
TLV
Link Aggregation
Maximum Frame Size
SubType
1
2
Description
Indicates whether the link is capable of
being aggregated, whether it is currently
in a LAG, and the port identification of the
LAG. Dell Networking OS does not
currently support this TLV.
Indicates the maximum frame size
capability of the MAC and PHY.
TLV
LLDP-MED Capabilities
Network Policy
Description
Indicates:
• whether the transmitting
device supports LLDP-
MED
• what LLDP-MED TLVs it
supports
• LLDP device class
Indicates the application type,
VLAN ID, Layer 2 Priority, and
DSCP value.