Protokol Konfigurasi Hos Dinamik: Perbezaan antara semakan
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In small networks DHCP typically uses [[Broadcast address|broadcasts]]. However, in some circumstances, [[unicast]] addresses will be used, for example: when networks have a single DHCP server that provides IP addresses for multiple subnets. When a router for such a subnet receives a DHCP broadcast, it converts it to unicast (with a destination MAC/IP address of the configured DHCP server, source MAC/IP of the router itself). The GIADDR field of this modified request is populated with the IP address of the router interface on which it received the original DHCP request. The DHCP server uses the GIADDR field to identify the subnet of the originating device in order to select an IP address from the correct pool. The DHCP server then sends the DHCP OFFER back to the router via unicast. The router then converts the DHCP OFFER back to a broadcast, sent out on the interface of the original device.
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| title = DHCP Failover Protocol
| draft = draft-ietf-dhc-failover-12
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| publisher = [[Internet Engineering Task Force|IETF]]
| accessdate = May 09, 2010
}}</ref> tetapi piwaian lakar telah luput. Piwaian lakar mencadangkan pelayan berganda, satu utama dan satu sokongan. Pelayan sokongan menjejak pemberian alamat IP yang dibuat oleh pelayan utama dan mengambil aluk sekiranya pelayan utama gagal.
==Security==
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