686 PowerConnect B-Series FCX Configuration Guide
53-1002266-01
LLDP-MED overview
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• Accurate topologies simplify troubleshooting within enterprise networks
• Can discover devices with misconfigured or unreachable IP addresses
LLDP-MED overview
LLDP-MED is an extension to LLDP. This protocol enables advanced LLDP features in a Voice over
IP (VoIP) network. Whereas LLDP enables network discovery between Network Connectivity
devices, LLDP-MED enables network discovery between Network Connectivity devices and media
Endpoints such as, IP telephones, softphones, VoIP gateways and conference bridges
.Figure 116 demonstrates LLDP-MED connectivity.
FIGURE 116 LLDP-MED connectivity
Benefits of LLDP-MED
LLDP-MED provides the following benefits:
• Vendor-independent management capabilities, enabling different IP telephony systems to
interoperate in one network.
LLDP-MED Network Connectivity Devices
(e.g., L2/L3 switch, bridge, etc.) provide IEEE
802 network access to LLDP-MED endpoints
LLDP-MED Generic Endpoints (Class I)
act as basic participants in LLDP-MED.
Example Class I device: Communications
controller
LLDP-MED Media Endpoints
(Class II) support IP media
streams.
Example Class II devices:
media gateway, conference
bridge
LLDP-MED Comunication Device Endpoints
(Class III) support end user IP communication.
Example Class III devices: IP telephone,
softphone
IP Network
Infrastructure
(IEEE 802 LAN)
