182 Brocade ICX 6650 Administration Guide
53-1002600-01
LLDP terms used in this chapter
8
This chapter describes how to configure the following protocols:
Link layer discovery protocol (LLDP) – The Layer 2 network discovery protocol described in the IEEE
802.1AB standard, Station and Media Access Control Connectivity Discovery. This protocol
enables a station to advertise its capabilities to, and to discover, other LLDP-enabled stations in the
same 802 LAN segments.
LLDP media endpoint devices (LLDP-MED) – The Layer 2 network discovery protocol extension
described in the ANSI/TIA-1057 standard, LLDP for Media Endpoint Devices. This protocol enables
a switch to configure and manage connected Media Endpoint devices that need to send media
streams across the network (e.g., IP telephones and security cameras).
LLDP enables network discovery between Network Connectivity devices (such as switches),
whereas LLDP-MED enables network discovery at the edge of the network, between Network
Connectivity devices and media Endpoint devices (such as IP phones).
The information generated by LLDP and LLDP-MED can be used to diagnose and troubleshoot
misconfigurations on both sides of a link. For example, the information generated can be used to
discover devices with misconfigured or unreachable IP addresses, and to detect port speed and
duplex mismatches.
LLDP and LLDP-MED facilitate interoperability across multiple vendor devices. Brocade devices
running LLDP can interoperate with third-party devices running LLDP.
The Brocade LLDP and LLDP-MED implementation adheres to the IEEE 802.1AB and TIA-1057
standards.
LLDP terms used in this chapter
Endpoint device – An LLDP-MED device located at the network edge, that provides some aspect of
IP communications service based on IEEE 802 LAN technology. An Endpoint device is classified in
one of three class types (I, II, or III) and can be an IP telephone, softphone, or conference bridge,
among others.
LLDP agent – The protocol entity that implements LLDP for a particular IEEE 802 device.
Depending on the configured LLDP operating mode, an LLDP agent can send and receive LLDP
advertisements (frames), or send LLDP advertisements only, or receive LLDP advertisements only.
LLDPDU (LLDP Data Unit) – A unit of information in an LLDP packet that consists of a sequence of
short variable length information elements, known as TLVs. LLDP pass-through is not supported in
conformance to IEEE standard.
MIB (Management Information Base) – A virtual database that identifies each manageable object
by its name, syntax, accessibility, and status, along with a text description and unique object
identifier (OID). The database is accessible by a Network Management Station (NMS) using a
management protocol such as the Simple Network Management Protocol (SNMP).
LLDP-MED network policy Yes
LLDP statistics and configuration details Yes
TABLE 41 Supported LLDP features
Feature Brocade ICX
6650