CDP (Cisco Discovery Protocol) and LLDP (Link Layer Discovery Protocol) are protocols used in networking for device discovery and network topology mapping.
CDP and LLDP serve the purpose of enabling devices to discover and learn information about neighboring devices connected directly to them in a network. They facilitate automatic discovery of network neighbors, including device type, capabilities, and connection status, without manual configuration.
CDP is a proprietary protocol developed by Cisco for discovering information about directly connected Cisco devices. It operates at the data link layer (Layer 2) of the OSI model and provides detailed information such as device type, IP addresses, and port IDs of neighboring Cisco devices. CDP helps network administrators manage and troubleshoot Cisco networks by providing visibility into the network topology.
LLDP (Link Layer Discovery Protocol) is an industry-standard protocol used for device discovery and network mapping in multi-vendor environments. Unlike CDP, LLDP is vendor-neutral and operates at Layer 2 of the OSI model. It allows devices from different vendors to exchange information about their identities, capabilities, and neighbors in a standardized format. LLDP is used to automate network management tasks, improve network visibility, and enhance interoperability between different networking devices.
LLDP is used to provide information about directly connected devices in a network, aiding in network discovery, troubleshooting, and management. It facilitates automatic configuration and monitoring of network devices by exchanging standardized information about device capabilities, network connections, and physical topology.
CDP (Cisco Discovery Protocol) operates at Layer 2 of the OSI model. It functions within the data link layer to provide detailed information about neighboring Cisco devices directly connected to the network. CDP enables Cisco devices to exchange information such as device type, IP addresses, and capabilities, enhancing network management and troubleshooting capabilities within Cisco environments.
