Terminology - ProCurve 6400cl Management And Configuration Manual

N o t e
LLDP (Link Layer Discovery Protocol): provides a standards-based
method for enabling the switches covered by this guide to advertise
themselves to adjacent devices and to learn about adjacent LLDP devices.
LLDP-MED (LLDP Media Endpoint Discovery): Provides an extension to
LLDP and is designed to support VoIP deployments.
LLDP-MED is an extension for LLDP, and the switch requires that LLDP be
enabled as a prerequisite to LLDP-MED operation. As of October, 2005, LLDP­
MED operates on 5300xl and 4200vl switches. This feature is not currently
offered on the 3400cl and 6400cl switches.
An SNMP utility can progressively discover LLDP devices in a network by:
1. Reading a given device's Neighbors table (in the Management Information
Base, or MIB) to learn about other, neighboring LLDP devices.
2. Using the information learned in step 1 to find and read the neighbor
devices' Neighbors tables to learn about additional devices, and so on.
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
(capability) and some configuration information. In VoIP deployments using
LLDP-MED on the 5300xl or 4200vl switches, additional support unique to
VoIP applications is also available. Refer to "LLDP-MED (Media-Endpoint-
Discovery) for the 5300xl and 4200vl Switches" on page 15-44.

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).
ELIN (Emergency Location Identification Number): A valid telephone
number in the North American Numbering Plan format and assigned to a
multiline telephone system operator by the appropriate authority. This
number calls a public service answering point (PSAP) and relays automatic
location identification data to the PSAP.
LLDP: Link Layer Discovery Protocol:
• 5300xl, 4200vl, and 6400cl Switches: IEEE 802.1AB
Configuring for Network Management Applications
LLDP (Link-Layer Discovery Protocol)
15-25