Lab 4.1.6 Using CDP Commands

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Lab 4.1.6 Using CDP Commands

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CDP discovers and shows information about directly connected Cisco devices, including routers and switches. CDP is a Cisco proprietary protocol that runs at the data link layer of the OSI model. The data link layer is Layer 2 of the OSI model. This allows devices that may be running different network Layer 3 protocols, such as IP or IPX, to learn about each other. CDP begins automatically upon a device system startup. However, if Cisco IOS Release 10.3 or a newer version is used, CDP must be enabled on each of the device interfaces. Enable CDP by using the cdp enable command. Using the command show...

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