Management and Configuration Guide K/KA/KB.15.15

The port VLAN ID TLV local information can be obtained from the MIB object
lldpXdot1LocPortVlanId in the local information table lldpXdot1LocTable.
The port VLAN ID TLV information about all the connected peer devices can be obtained from the
MIB object lldpXdot1RemPortVlanId in the remote information table lldpXdot1RemTable.
LLDP-MED
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
LLDP-MED interoperates with directly connected IP telephony (endpoint) clients having these features
and services:
• Auto-negotiate speed and duplex configuration with the switch
• 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 ECS (such as E911, 999, and 112)
• Advertise device information for the device data inventory collected by the switch, including:
• Asset ID•• Serial numberHardware revision
• •Firmware revision Manufacturer name
•• Model nameSoftware revision
258 Configuring for Network Management Applications