At the simplest level, ARP and RARP are two completely different protocols. ARP is for resolving IP addresses to MAC addresses (i.e. I need to talk to 1.2.3.4, what hardware ethernet address has that IP address?) and RARP is the reverse (i.e. my MAC address is 1:2:3:4:5:6, what IP address am I allowed to use?). RARP is used during boot-up time on e.g. diskless clients to assign IP addresses to their network interfaces, but once the system is configured and running, RARP is out of the picture. ARP is usually involved during the entire uptime of a machine, since machines don't remember every possible MAC/IP mapping they see, just a cache of the most frequently/recently seen ones. That said, I'm not really sure what you mean by gratuitous ARP... tw On 08/13/2001 11:41 -0700, Brad Bonkoski wrote: >> Hello All, >> >> What is the difference between gratuitous ARP and RARP? >> >> TIA >> -Brad >> >> >> >> >> - >> : send the line "unsubscribe linux-net" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html End of included message -- twalberg@mindspring.com
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