Yealink VC Series, Руководство администратора, Страница: 48 / 180

Administrator‘s Guide for Yealink Video Conferencing Systems
38
extension to LLDP that operates between endpoint devices and network connectivity
devices. LLDP-MED provides the following capabilities for the system:

Capabilities Discovery -- allows LLDP-MED system to determine the capabilities
that the connected switch supports and has enabled.

Network Policy -- provides voice VLAN configuration to notify the system which
VLAN to use and QoS-related configuration for voice data. It provides a ―plug and
play‖ network environment.

Power Management -- provides information related to how the system is powered,
power priority, and how much power the system needs.

Inventory Management -- provides a means to effectively manage the system and
its attributes, such as model number, serial number and software revision.
TLVs supported by the system are summarized in the following table:
TLV Type TLV Name Description
Mandatory TLVs
Chassis ID The network address of the system.
Port ID The MAC address of the system.
Time To Live
Seconds until data unit expires.
The default value is 180s.
End of LLDPDU Marks end of LLDPDU.
Optional TLVs
System Name
Name assigned to the system.
The default value is ―VCS‖.
System Description
Description of the system.
Description includes firmware version of
the system.
System Capabilities
The supported and enabled system
capabilities.
The supported capabilities are Bridge,
Telephone and Router.
The enabled capabilities are Bridge and
Telephone by default.
Port Description
Description of port that sends data unit.
The default value is ―WAN PORT‖.
IEEE Std 802.3
Organizationally
Specific TLV
MAC/PHY
Configuration/Status
Duplex mode and network speed
settings of the system.
The Auto Negotiation is supported and
enabled by default.
The advertised capabilities of PMD.