Lldp-Med - Cisco ASR 920 Series Configuration Manual Ethernet Router

Using Link Layer Discovery Protocol in Multivendor Networks
include network topology discovery, inventory management, emergency services, VLAN assignment, and
inline power supply.
LLDP and Cisco Discovery Protocol can operate on the same interface.
Note
The figure below shows a high-level view of LLDP operating in a network node.
When you configure LLDP or Cisco Discovery Protocol location information on a per-port basis, remote
devices can send Cisco medianet location information to the switch. For more information, see the Using
Cisco Discovery Protocol module.

LLDP-MED

LLDP-MED operates between several classes of network equipment such as IP phones, conference bridges,
and network connectivity devices such as routers and switches. By default, a network connectivity device
sends out only LLDP packets until it receives LLDP-MED packets from an endpoint device. The network
device then sends out LLDP-MED packets until the remote device to which it is connected ceases to be
LLDP-MED capable.
Classes of Endpoints
LLDP-MED network connectivity devices provide IEEE 802 network access to LLDP-MED endpoints.
LLDP-MED supports the following three classes of endpoints:
• Generic (class 1)—Basic participant endpoints; for example, IP communications controllers.
• Media (class 2)—Endpoints that support media streams; for example, media gateways and conference
bridges.
Carrier Ethernet Configuration Guide (Cisco ASR 920 Series)
LLDP-MED
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