LLDP-MED (media-endpoint-discovery)
LLDP-MED (ANSI/TIA-1057/D6) extends the LLDP (IEEE 802.1AB) industry standard to support advanced
features on the network edge for Voice Over IP (VoIP) endpoint devices with specialized capabilities and LLDP-
MED standards-based functionality. LLDP-MED in the switches uses the standard LLDP commands described
earlier in this section, with some extensions, and also introduces new commands unique to LLDP-MED operation.
The show commands described elsewhere in this section are applicable to both LLDP and LLDP-MED operation.
LLDP-MED benefits include:
• Plug-and-play provisioning for MED-capable, VoIP endpoint devices
• Simplified, vendor-independent management enabling different IP telephony systems to interoperate on one
network
• Automatic deployment of convergence network policies (voice VLANs, Layer 2/CoS priority, and Layer 3/QoS
priority)
• Configurable endpoint location data to support the Emergency Call Service (ECS) (such as Enhanced 911
service, 999, 112)
• Detailed VoIP endpoint data inventory readable via SNMP from the switch
• Power over Ethernet (PoE) status and troubleshooting support via SNMP
• support for IP telephony network troubleshooting of call quality issues via SNMP
This section describes how to configure and use LLDP-MED features in the switches to support VoIP network
edge devices (media endpoint devices) such as:
• IP phones
• Voice/media gateways
• Media servers
• IP communications controllers
• Other VoIP devices or servers
Figure 32: Example: of LLDP-MED network elements
LLDP-MED endpoint support
LLDP-MED interoperates with directly connected IP telephony (endpoint) clients having these features and
services:
Chapter 7 Configuring for Network Management Applications 233
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