The Nortel Discovery Protocol (NDP) is a Data Link Layer (OSI Layer 2) network protocol for discovery of Nortel networking devices and certain products from Avaya and Ciena.
Discovery Channel | Transmission Control Protocol | File Transfer Protocol | Session Initiation Protocol | Discovery | User Datagram Protocol | BitTorrent (protocol) | Kyoto Protocol | Internet Protocol | Post Office Protocol | Nortel | Program and System Information Protocol | Space Shuttle Discovery | Investigation Discovery | Discovery Kids | Discovery Communications | Simple Network Management Protocol | Discovery Health Channel | Internet Message Access Protocol | Network File System (protocol) | Hypertext Transfer Protocol | RRS Discovery | Lightweight Directory Access Protocol | Discovery Institute | Discovery Bay | ''Discovery'' | Secure Real-time Transport Protocol | Real-time Transport Protocol | Simple Mail Transfer Protocol | Montreal Protocol |