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Some DHCP servers also provide the legacy BOOTP functionality. When a network-connected computer boots up, its IP stack broadcasts BOOTP network messages requesting an IP address assignment. A BOOTP configuration server replies to the request by assigning an IP address from a pool of addresses, which is preconfigured by an administrator.
The client broadcasts the request and does not need prior knowledge of the network topology or the identities of servers capable of fulfilling its request. RARP has been rendered obsolete by the Bootstrap Protocol (BOOTP) and the modern Dynamic Host Configuration Protocol (DHCP), which both support a much greater feature set than RARP.
At boot time, a workstation that has been set to boot from PXE will issue a BOOTP request via the network. Once the request is received, the DHCP Server will supply an IP address to the machine, and the DNS server will point the client computer to the RIS server, which in turn will issue a disc boot image (often called the "OS Chooser").
Server BOOTP DHCP DHCPv6 Other Load balancing Failover dhcpy6d No No Yes PXE, Dynamic DNS: Yes Yes dnsmasq Yes Yes Yes PXE, TFTP: No No ISC DHCP Yes Yes Yes Dynamic DNS [10] [11] ...
The pioneering TFTP/BOOTP/DHCP approach fell short, as at the time, it did not define the required standardized client side of the provisioning environment. The Preboot Execution Environment (PXE) was introduced as part of the Wired for Management [ 2 ] framework by Intel and is described in the specification published by Intel and SystemSoft.
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Apple Mac OS and MS Windows have supported link-local addresses since Windows 98 and Mac OS 8.5 (both released in 1998). [1] Apple released its open-source implementation in the Darwin bootp package. Avahi contains an implementation of IPv4LL in the avahi-autoipd tool. Zero-Conf IP (zcip) [36] BusyBox can embed a simple IPv4LL implementation.
The Dynamic Host Configuration Protocol (DHCP) is a network management protocol used on Internet Protocol (IP) networks for automatically assigning IP addresses and other communication parameters to devices connected to the network using a client–server architecture.