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RARP

(Reverse ARP) A TCP/IP protocol used by a diskless workstation to obtain its IP address. Upon startup, the client station sends out a RARP request in an Ethernet frame to the RARP server, which returns the layer 3 address for a layer 2 address (performing the opposite function of an ARP). See BOOTP.



BOOTP

(BOOTstrap Protocol) A TCP/IP protocol used by a diskless workstation to obtain its IP address and other network information such as server address and default gateway. Upon startup, the client station sends out a BOOTP request in a UDP packet to the BOOTP server, which returns the required information. Unlike RARP, which uses only the layer 2 (Ethernet) frame for transport, the BOOTP request and response use an IP broadcast function that can send messages before a specific IP address is known. See RARP.



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