Configuring for Network Management Applications

LLDP (Link-Layer Discovery Protocol)

■able to use the following network policy elements configured on the client port

•voice VLAN ID

•802.1p (Layer 2) QoS

•Diffserv codepoint (DSCP) (Layer 3) QoS

■discover and advertise device location data learned from the switch

■support emergency call service (ECS—such as E911, 999, and 112)

■advertise device information for the device data inventory collected by the switch, including:

•

hardware revision

•

serial number

• asset ID

•

firmware revision

•

manufacturer name

 

•

software revision

•

model name

 

■provide information on network connectivity capabilities (for example, a multi-port VoIP phone with Layer 2 switch capability)

■support the fast start capability

N o t e

LLDP-MED on the switches covered in this guide is intended for use with VoIP

 

endpoints, and is not designed to support links between network

 

infrastructure devices, such as switch-to-switch or switch-to-router links.

 

 

LLDP-MED Endpoint Device Classes. LLDP-MED endpoint devices are, by definition, located at the network edge and communicate using the LLDP- MED framework. Any LLDP-MED endpoint device belongs to one of the following three classes:

■Class 1 (Generic Endpoint Devices): These devices offer the basic LLDP discovery services, network policy advertisement (VLAN ID, Layer 2/802.1p priority, and Layer 3/DSCP priority), and PoE manage- ment. This class includes such devices as IP call controllers and communication-related servers.

■Class 2 (Media Endpoint Devices): These devices offer all Class 1 features plus media streaming capability, and include such devices as voice/media gateways, conference bridges, and media servers.

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