Lldp Terminology - HP ProCurve 6400cl Series Management And Configuration Manual

Configuring for Network Management Applications
LLDP (Link-Layer Discovery Protocol)
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Also, by using show commands to access the switch's neighbor database for
information collected by an individual switch, system administrators can learn
about other devices connected to the switch, including device type (capabil­
ity) and some configuration information.

LLDP Terminology

Adjacent Device: Refer to "Neighbor or Neighbor Device".
Advertisement: See LLDPDU.
Active Port: A port linked to another active device (regardless of whether
STP is blocking the link).
LLDP: Link Layer Discovery Protocol:
• 5300xl and 6400cl Switches: IEEE 802.1AB/D11 or greater
• 3400cl Switches: IEEE 802.1AB/D9 or greater
LLDP-Aware: A device that has LLDP in its operating code, regardless of
whether LLDP is enabled or disabled.
LLDP Device: A switch, server, router, or other device running LLDP.
LLDP Neighbor: An LLDP device that is either directly connected to another
LLDP device or connected to that device by another, non-LLDP Layer 2 device
(such as a hub) Note that an 802.1D-compliant switch does not forward LLDP
data packets even if it is not LLDP-aware.
LLDPDU (LLDP Data Unit): LLDP data packet are transmitted on active
links and include multiple TLVs containing global and per-port switch infor­
mation. In this guide, LLDPDUs are termed "advertisements" or "packets".
MIB (Management Information Base): An internal database the switch main­
tains for configuration and performance information.
Neighbor: See "LLDP Neighbor".
Non_LLDP Device: A device that is not capable of LLDP operation.
TLV (Type-Length-Value): A data unit that includes a data type field, a data
unit length field (in bytes), and a field containing the actual data the unit is
designed to carry (as an alphanumeric string, a bitmap, or a subgroup of
information). Some TLVs include subelements that occur as separate data
points in displays of information maintained by the switch for LLDP adver­
tisements. (That is, some TLVs include multiple data points or subelements.)