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 LLDP-MED protocol extension was formally approved and published as the standard ANSI/TIA-1057 by the Telecommunications Industry Association (TIA) in April 2006. [3] Check a real world use of LLDP . LLDP-MED simplifies VoIP deployments | Network World . As an open standard, LLDP is being used more and more by Network Tester equipment

I'm reading different articles which state the same thing all the time that "LLDP-MED is an enhancement/extension of LLDP". But, in fact, this definition says nothing. LLDP is customizable, that is, it may support many additional TLVs for different capabilites discovery.

Raymond, I have the similar experience with LLDP on a Cisco-device. It's a one-hop protocol. Farroar, I agree about the documentation about Meraki. Many other vendors have the same problem, it's almost impossible to understand exactly how things work if you go with

Indeed cisco has used cdp in many ways like sending voice vlan info to IP phones negotiating for power requirement over POE. so we use lldp or lldp-med when non cisco device is there. Expand Post Like Liked Unlike Reply

There's a different procedure for hooking up a non-Cisco phone to a Cisco switch. Normally, the phone is assigned to the voice VLAN because of CDP communication between the switch and the phone.

These organizationally specific LLDP TLVs are also advertised to support LLDP-MED. • GIF Port VLAN ID TLV ((IEEE 802.1 organizationally specific TLVs) • GIF MAC/PHY configuration/status TLV(IEEE 802.3 organizationally specific TLVs)

CDP is a Cisco proprietary protocol that is used for collecting directly connected neighbor device information like hardware, software, device name details and many more...

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