Signamax Managed Hardened PoE Industrial DIN-rail Mount Switch - Manual (Page 51)

9 LLDP
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Caution: The port should not be a member of a trunk group.
9.1.2 TLVs
TLVs are type, length, and value sequences that carry information elements. The type field
identifies the type of information, the length field measures the length of the information field
in octets, and the value field contains the information itself.
LLDPDU TLVs fall into these categories: basic management TLVs, organizationally (IEEE
802.1 and IEEE 802.3) specific TLVs, and LLDP-MED (media endpoint discovery) TLVs.
Basic management TLVs are essential to device management. Organizationally specific
TLVs and LLDP-MED TLVs are used for enhanced device management; they are defined by
standardization or other organizations and thus are optional to LLDPDUs.
Decide which of the following information is included in LLDPDU.
Port Description：Identifies information of the interface, including the name of manufacturer,
product name, and the version of the interface hardware & software.
System Name：Identifies the administratively-assigned name for the device.
System Description：A textual description of the device, this value typically includes the full
name and version identification of the system’s hardware type, software operating system,
and networking software.
System Capability：identifies the capabilities of the device and its primary function (e.g.
repeater, Bridge, WLAN, Access Point, Router, Telephone, DOCSIS cable device, Station,
etc.)
Management Address： Identifies the IP address or MAC address of the device.
9.1.3 LLDP Parameters
This page sets LLDP parameters: TX Interval, Tx Hold, Tx Delay, Re-init Delay, and Fast
Count.
Tx Interval：The time interval between sending LLDP packets, its range is from 5 to 32768
seconds. The default value is 30 seconds.
Tx Hold：TTL multiplier. TTL of TLV carried in LLDPDU is used to set the aging time on the
neighbor device. Since TTL of TLV = TTL multiplier × Tx Interval, the aging time on the
neighbor device can be adjusted by the TTL multiplier. The range of this value is from 2 to 10,