Chapter 6: Configuration
Device Type: LLDP-MED devices are comprised of two primary device types: network connectivity devices and endpoint devices.
LLDP-MED network connectivity device definition: LLDP-MED network connectivity devices, as defined in TIA-1057, provide access to the IEEE 802 based LAN infrastructure for LLDP-MED endpoint devices. An LLDP-MED network connectivity device is a LAN access device based on any of the following technologies:
1.LAN switch/router
2.IEEE 802.1 bridge
3.IEEE 802.3 repeater (included for historical reasons)
4.IEEE 802.11 wireless access point
5.Any device that supports the IEEE 802.1AB and MED extensions defined by TIA-1057 and can relay IEEE 802 frames via any method.
LLDP-MED endpoint device definition: LLDP-MED endpoint devices, as defined in TIA-1057, are located at the IEEE 802 LAN network edge, and participate in IP communication service using the LLDP-MED framework.
Within the LLDP-MED endpoint device category, the LLDP-MED scheme is broken into further endpoint device classes, as defined next.
Each LLDP-MED endpoint device class is defined to build upon the capabilities defined for the previous endpoint device class. For example, any LLDP-MED endpoint device claiming compliance as a media endpoint (Class II) will also support all aspects of TIA-1057 applicable to generic endpoints (Class I), and any LLDP-MED endpoint device claiming compliance as a communicatio device (Class III) will also support all aspects of TIA-1057 applicable to both media endpoints (Class II) and generic endpoints (Class I).
LLDP-MED generic endpoint (Class I): The LLDP-MED generic endpoint (Class I) definition is applicable to all endpoint products that require the base LLDP discovery services defined in TIA-1057, but do not support IP media or act as an end-user communication appliance. Such devices may include (but are not limited to) IP communication controllers, other communication- related servers, or any device requiring basic services as defined in TIA-1057.
Discovery services defined in this class include LAN configuration, device location, network policy, power management, and inventory management.
LLDP-MED media endpoint (Class II): The LLDP-MED media endpoint (Class II) definition is applicable to all endpoint products that have IP media capabilities, but may or may not be associated with a particular end user. Capabilities include all the capabilities defined for the previous generic endpoint class (Class I), and are extended to include aspects related to media streaming.
Example product categories expected to adhere to this class include (but are not limited to) voice/media gateways, conference bridges, media servers, and similar devices.
Discovery services defined in this class include media-type-specific network layer policy discovery.
LLDP-MED communication endpoint (Class III):
The LLDP-MED communication endpoint (Class III) definition is applicable to all endpoint products that act as end user communication appliances supporting IP media. Capabilities include all of the capabilities defined for the previous generic endpoint (Class I) and media endpoint (Class II) classes, and are extended to include aspects related to end user devices. Example product categories expected to adhere to this class include (but are not limited to) end user communication appliances, such as IP phones, PC-based softphones, or other communication appliances that directly support the end user.
Discovery services defined in this class include provision of location identifier (including ECS/E911 information), embedded L2 switch support, and inventory management.
LLDP-MED capabilities: LLDP-MED capabilities describe the neighborhood unit’s LLDP-MED capabilities. The possible capabilities are:
