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The Link Layer Discovery Protocol (LLDP) is a vendor-neutral link layer protocol used by network devices for advertising their identity, capabilities, and neighbors on a local area network based on IEEE 802 technology, principally wired Ethernet. [1]
Link Layer Discovery Protocol (additional) 01-80-C2-00-00-08: SNAP (length) Spanning Tree Protocol (for provider bridges) IEEE 802.1ad: 01-80-C2-00-00-0D: 0x88F5 Multiple VLAN Registration Protocol (for provider bridges) IEEE 802.1ad: 01-80-C2-00-00-0E: Local LAN Link, never crosses another device 0x88CC Link Layer Discovery Protocol (primary ...
A solicited-node multicast address is an IPv6 multicast address used by the Neighbor Discovery Protocol to determine the link layer address associated with a given IPv6 address, which is also used to check if an address is already being used by the local-link or not, through a process called DAD (Duplicate Address Detection). The solicited-node ...
It cannot discover devices across routers, an operation which would require Internet Protocol level routing. Link Layer Topology Discovery in Windows Vista consists of two components. The LLTD Mapper I/O component is the master module which controls the discovery process and generates the Network Map.
This article lists protocols, categorized by the nearest layer in the Open Systems Interconnection model.This list is not exclusive to only the OSI protocol family.Many of these protocols are originally based on the Internet Protocol Suite (TCP/IP) and other models and they often do not fit neatly into OSI layers.
The link layer includes the protocols that define communication between local (on-link) network nodes which fulfill the purpose of maintaining link states between the local nodes, such as the local network topology, and that usually use protocols that are based on the framing of packets specific to the link types.
Cisco Discovery Protocol (CDP) is a proprietary data link layer protocol developed by Cisco Systems in 1994 [1] by Keith McCloghrie and Dino Farinacci. It is used to share information about other directly connected Cisco equipment, such as the operating system version and IP address .
Those protocols are used to inform neighboring devices about each other and to provide (data link layer) parameters to network a new device. ^ Device Discovery Protocols in LLDP-MED and Cisco Discovery Protocol , white paper by Cisco Systems, 2006