Planet IGS-5225 Series, Руководство пользователя

Страница: 247 / 463

User’s Manual of IGS-5225 series
247
Object Description
•
Port The port on which the LLDP frame was received.
•
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
Within the LLDP-MED Endpoint Device category, the LLDP-MED scheme is
broken into further Endpoint Device Classes, as defined in the following.
Each LLDP-MED Endpoint Device Class is defined to build upon the capabilities
defined for the previous Endpoint Device Class. Fore-example will any
LLDP-MED Endpoint Device claiming compliance as a Media Endpoint (Class II)
also support all aspects of TIA-1057 applicable to Generic Endpoints (Class I),
and any LLDP-MED Endpoint Device claiming compliance as a Communication
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,
however 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 however may or may not be associated
with a particular end user. Capabilities include all of the capabilities defined for
the previous Generic Endpoint Class (Class I), and are extended to include