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Cisco Discovery Protocol information


Cisco Discovery Protocol
Communication protocol
AbbreviationCDP
Developer(s)Cisco Systems
Introduction1994; 30 years ago (1994)
OSI layerData link layer

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. CDP can also be used for On-Demand Routing, which is a method of including routing information in CDP announcements so that dynamic routing protocols do not need to be used in simple networks.

  1. ^ "LLDP-MED and Cisco Discovery Protocol [IP Telephony/Voice over IP (VoIP)]".

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Cisco Discovery Protocol

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Cisco Discovery Protocol (CDP) is a proprietary data link layer protocol developed by Cisco Systems in 1994 by Keith McCloghrie and Dino Farinacci. It...

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Link Layer Discovery Protocol

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proprietary protocols, such as Cisco Discovery Protocol, Foundry Discovery Protocol, Nortel Discovery Protocol and Link Layer Topology Discovery. Information...

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Service discovery

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Cisco Discovery Protocol (both referred to as CDP but different formats). Local Peer Discovery, or Local Service Discovery Multicast Source Discovery...

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CDP spoofing

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employed to compromise the operation of network devices that use Cisco Discovery Protocol (CDP) for discovering neighboring devices. CDP spoofing is a network...

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Cisco

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Cisco certifications Cisco IOS Packet Tracer Cisco Catalyst Cisco DevNet Cisco Express Forwarding Cisco Discovery Protocol Cisco Security Agent Cisco...

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EtherType

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is a two-octet field in an Ethernet frame. It is used to indicate which protocol is encapsulated in the payload of the frame and is used at the receiving...

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Routing Information Protocol

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on the LAN and WAN side. Cisco's proprietary Interior Gateway Routing Protocol (IGRP) was a somewhat more capable protocol than RIP. It belongs to the...

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On Demand Routing

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On-Demand Routing ("ODR") is an enhancement to Cisco Discovery Protocol (CDP), a protocol used to discover other Cisco devices on either broadcast or non-broadcast...

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Protocol Independent Multicast

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LAN, WAN or the Internet. It is termed protocol-independent because PIM does not include its own topology discovery mechanism, but instead uses routing information...

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Simple Network Management Protocol

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Secure Internet Security Solutions. Cisco Press. pp. 52. ISBN 9781587050169. HMAC-SHA-2 Authentication Protocols in the User-based Security Model (USM)...

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Multicast address

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Ethernet multicast, and at the internet layer (layer 3 for OSI) for Internet Protocol Version 4 (IPv4) or Version 6 (IPv6) multicast. IPv4 multicast addresses...

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Data link layer

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This algorithm is often used in the data link layer. ARCnet ATM Cisco Discovery Protocol (CDP) Controller Area Network (CAN) Econet Ethernet Ethernet Automatic...

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Power over Ethernet

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between the endpoint and the Cisco switch based on a power value that was added to the Cisco proprietary Cisco Discovery Protocol (CDP). CDP is also responsible...

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List of computing and IT abbreviations

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CDMA—Code-Division Multiple Access CDN—Content Delivery Network CDP—Cisco Discovery Protocol CDP—Continuous Data Protection CD-R—CD-Recordable CD-ROM—CD Read-Only...

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Link Layer Topology Discovery

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Management Protocol Service Discovery Link Layer Discovery Protocol - same aim (and layer) but IEEE standard protocol. Cisco Discovery Protocol - Similar...

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List of Cisco products

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Control Protocol. Webex, Collaboration Tools Cisco Active Network Abstraction Cisco Fabric Manager Data Center Management and Automation—Cisco Intelligent...

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CDP

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type of battery-charging USB port Cisco Discovery Protocol, a proprietary data link network protocol developed by Cisco Systems Columbia Data Products,...

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Layer 2 Tunneling Protocol

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communication: Cisco's Layer 2 Forwarding Protocol (L2F) and Microsoft's Point-to-Point Tunneling Protocol (PPTP). A new version of this protocol, L2TPv3, appeared...

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Internet Control Message Protocol

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The Internet Control Message Protocol (ICMP) is a supporting protocol in the Internet protocol suite. It is used by network devices, including routers...

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Secure Neighbor Discovery

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The Secure Neighbor Discovery (SEND) protocol is a security extension of the Neighbor Discovery Protocol (NDP) in IPv6 defined in RFC 3971 and updated...

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VLAN

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available only on some Cisco equipment and has been deprecated. VLAN Trunking Protocol (VTP) is a Cisco proprietary protocol that propagates the definition...

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Netdisco

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Cisco Discovery Protocol, Link Layer Discovery Protocol, Foundry Discovery Protocol or SynOptics Network Management Protocol is available, discovery of...

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XMPP

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Extensible Messaging and Presence Protocol (XMPP, originally named Jabber) is an open communication protocol designed for instant messaging (IM), presence...

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Multicast routing

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destination computers simultaneously: Multicast Source Discovery Protocol, Multicast BGP, Protocol Independent Multicast. Multicast routing is a method...

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Internet Group Management Protocol

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The Internet Group Management Protocol (IGMP) is a communications protocol used by hosts and adjacent routers on IPv4 networks to establish multicast group...

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List of TCP and UDP port numbers

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time was subsequently revoked and eventually re-assigned for use by Cisco's URD protocol. Subsequently, port 587 was assigned as the SMTP submission port...

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Address Resolution Protocol

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Internet Protocol Version 6 (IPv6) networks, the functionality of ARP is provided by the Neighbor Discovery Protocol (NDP). The Address Resolution Protocol is...

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Mausezahn

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used by the Spanning Tree Protocol (PVST+ is also supported) Cisco Discovery Protocol messages Link Layer Discovery Protocol messages IGMP version 1 and...

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