BOOTP
Following ARP, BOOTP offers a slightly more advanced way to handle requests for address resolution from clients. Sun Microsystems machines can use BOOTP to find out who they are. To implement BOOTP, you need to run the BOOTP daemon, bootpd. The configuration file for this daemon is found in /etc, and is called bootptab. The /etc/bootptab is highly configurable and offers more choices (as well as better security) than ARP. Also, with BOOTP, gateway servers can be set up so that gateways don't become obstacles to address resolution, as is the case with ARP.
Linux also allows a native client-side implementation of BOOTP from within the kernel—as it does with ARP—that allows the use of NFS instead of tftp for mounting a filesystem. The advantage ...
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