Cdp which layer

Platform - the hardware platform for the network device. Hold time - is the time it takes for a neighbor device to receive the message containing the neighbor device information. Cisco Discovery Protocol CDP Cisco Discovery Protocol CDP is a Cisco-based protocol enabled on Cisco devices by default to help network administrators gather and discover information about the local and remote devices attached to the network.

CDP and LLDP Network verification and configurations We will learn how to configure the two discovery protocols for network management on network devices. R2 config terminal Enter configuration commands, one per line. R2 config cdp run! R1 show cdp neighbor detail Device ID: R2! R2 config terminal R2 config no lldp run! Follow AtonyaDenis. This article was contributed by a student member of Section's Engineering Education Program.

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I think Ubiquiti and Mikrotik also have some support for it. Ask a question or join the discussion by visiting our Community Forum. Skip to content Search for: Search. CDP can tell us even more however…. Routers do not forward layer 2 frames out of other interfaces, therefore only directly connected neighbors receive the CDP advertisements.

Enter your search terms Submit search form. Earn on the Web. Version - CDP version 0x01 or 0x02 Time to Live TTL - this is the holdtime in seconds that the information should be kept for by the receiving device default seconds. Port ID - This has an ASCII string that names the port from which the message is sent Capabilities - has a value describing the device capabilities 0x01 - level 3 routing 0x02 - level 2 transparent bridging or source-route bridging if 0x04 bit set 0x04 - level 2 source-route bridging 0x08 - level 2 switching not running Spanning Tree 0x10 - sends and receives packets for a network layer protocol 0x20 - the device does not forward IGMP reports 0x40 - level 1 function Version - Software version running on the device Platform - ASCII string describing the device e.