Link layer discovery protocol (LLDP) is a network protocol used for discovering information about neighboring network devices and for advertising device capabilities on a network. LLDP is used by network devices to exchange information about their configuration and capabilities. LLDP is similar to the CDP (Cisco Discovery Protocol) used by Cisco devices.
LLDP uses a simple discovery process that does not require any configuration or management. LLDP discovery messages are sent periodically by each device on a network. These messages contain information about the device's identity, capabilities, and configuration. LLDP discovery messages are forwarded by intermediate devices, so that each device on the network can learn about all of the other devices on the network.
LLDP is used by network devices to automatically configure themselves. For example, LLDP can be used to automatically configure switches to use the correct VLANs (virtual LANs) for each port. LLDP can also be used to automatically configure 802.1X authentication on ports.
LLDP is an open standard, defined in IEEE 802.1AB. LLDP is supported by a number of vendors, including Cisco, HP, and Microsoft. What is the purpose of LLDP? LLDP is a media-independent protocol used to discover basic information about neighboring devices on a network, regardless of the underlying network type. This information includes the device's identity, capabilities, and connectivity. LLDP is used by network administrators to simplify the configuration and management of networked devices.
Is LLDP needed?
LLDP is a layer 2 protocol that allows network devices to discover each other and exchange information. It is used by network administrators to troubleshoot network problems and to manage network configuration.
LLDP is not strictly required in order to have a functioning network. However, it can be very useful in helping to troubleshoot and manage network configuration.
What is a difference between CDP and LLDP?
The main difference between CDP and LLDP is that CDP is a Cisco proprietary protocol while LLDP is an IEEE standard protocol. CDP is used to discover information about neighboring Cisco devices, while LLDP is used to discover information about neighboring devices in general. CDP is supported by most Cisco devices, while LLDP is supported by a wider range of devices from different vendors. Is LLDP a neighbors information? LLDP is a Layer 2 protocol that is used to exchange information about the link between two devices. This information includes the devices' capabilities, identities, and neighbors. Therefore, LLDP can be used to discover the neighbors of a device. Is LLDP an open standard? Yes, LLDP is an open standard. The standard is maintained by the IEEE, and it is available for free from the IEEE website.