The Dynamic Host Configuration Protocol (DHCP) is an Internet Engineering Task Force (IETF) standard protocol designed to provide a framework for passing configuration information to hosts on a TCP/IP network. For an introduction to the DHCP Protocol, see [RFC2131] section 1.
DHCP allows for multiple servers to be operating on a single network. For such servers to provide redundancy in case of server failure, the cooperating servers have to maintain a consistent database of lease information. The DHCP Failover Protocol [IETF-DHCPFOP-12] defines a way to synchronize the lease information between two DHCP servers.
This document specifies a set of extensions to the DHCP Failover Protocol.
Sections 1.8, 2, and 3 of this specification are normative and can contain the terms MAY, SHOULD, MUST, MUST NOT, and SHOULD NOT as defined in RFC 2119. Sections 1.5 and 1.9 are also normative but cannot contain those terms. All other sections and examples in this specification are informative.