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CDP (Cisco Discovery Protocol) Resource

The Cisco Discovery Protocol (CDP) is a media-independent device discovery protocol that runs on all Cisco manufactured equipment, including routers, bridges, access servers, and switches.
In addition, network management applications can retrieve the device type and SNMP-agent address of neighboring Cisco devices. This enables applications to send SNMP queries to neighboring devices. CDP allows network management applications to discover Cisco devices that are neighbors of already known devices, in particular, neighbors running lower-layer, transparent protocols.
CDP runs on all media that support Subnetwork Access Protocol (SNAP), including LAN and Frame Relay. CDP runs over the data link layer only.
Cisco devices never forward CDP packets. When new CDP information is received, Cisco devices discard old information.

CDP Informations
Configuring CDP
CDP MIB
CDP Tools
Others Device Discovery Protocols
IPMI (Intelligent Platform Management Interface)

CDP Informations

WikipediaPreviewCisco Discovery Protocol a proprietary layer 2 network protocol developed by Cisco Systems
Cisco SystemsPreviewCisco IOS Cisco Discovery Protocol Command Reference
Cisco SystemsPreviewCDP Command Reference
Cisco SystemsPreviewCDP Commands
Cisco SystemsPreviewCDP Version-2
Cisco SystemsPreviewCisco Discovery Protocol (CDP) HELP
Peter J. Welcher (NetCraftsmen)PreviewDiscovering Cisco Discovery Protocol
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Configuring CDP

Cisco SystemsPreviewConfiguring Cisco Discovery Protocol on Cisco Routers and Switches Running Cisco IOS
Cisco SystemsPreviewConfiguring the Cisco Discovery Protocol (CDP)
Cisco SystemsPreviewCisco IOS Release 12.4
Cisco SystemsPreviewCisco IOS XR Software
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CDP MIB

Cisco SystemsPreviewCISCO-CDP-MIB
Cisco SystemsPreviewCISCO-CDP-CAPABILITY
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CDP Tools

PreviewCDPR (Cisco Discovery Protocol Reporter) is used to decode a Cisco Disovery Protocol (CDP) packet, by default it will report the device ID, the IP Address (of the device), and the port number that the machine is connected to. Optionally it will decode the entire CDP packet.
Previewscdp (send CDP packets) This program sends CDP (Cisco Discovery Protocol) packets out on selected interfaces and tells the connected switch (cisco only) where the host is connected.
TallsoftPreviewCisco CDP Monitor
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Others Device Discovery Protocols

CiscoPreviewLLDP-MED and Cisco Discovery Protocol
WikipediaPreviewLLDP (Link Layer Discovery Protocol) is a vendor-neutral Layer 2 protocol that allows a network device to advertise its identity and capabilities on the local network.
IEEE-SAPreviewIEEE 802.1AB (LLDP) Specification
Extreme NetworksPreview[pdf] Extreme Networks LLDP
WikipediaPreviewNortel Discovery Protocol (NDP) formerly called SynOptics Network Management Protocol (SONMP)
WikipediaPreviewMicrosoft - Link Layer Topology Discovery (LLTD)
WikipediaPreviewIPv6 - Neighbor Discovery Protocol (NDP)
WikipediaPreviewIPv6 - Secure Neighbor Discovery Protocol (SEND)
WikipediaPreviewICMP Internet Router Discovery Protocol (IRDP)
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IPMI (Intelligent Platform Management Interface)

IntelPreviewIPMI Specification
SourceForgePreviewIPMItool
SourceForgePreviewOpenIPMI
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