IP Mobility Support for IPv4, Revised (RFC5944)
Original Publication Date: 2010-Nov-01
Included in the Prior Art Database: 2010-Dec-01
Internet Society Requests For Comment (RFCs)
C. Perkins: AUTHOR [+1]
IP version 4 assumes that a node's IP address uniquely identifies the node's point of attachment to the Internet. Therefore, a node must be located on the network indicated by its IP address in order to receive datagrams destined to it; otherwise, datagrams destined to the node would be undeliverable. For a node to change its point of attachment without losing its ability to communicate, currently one of the two following mechanisms must typically be employed:
Internet Engineering Task Force (IETF) C. Perkins, Ed. Request for Comments: 5944 WiChorus Inc. Obsoletes: 3344 November 2010 Category: Standards Track ISSN: 2070-1721
IP Mobility Support for IPv4, Revised
This document specifies protocol enhancements that allow transparent routing of IP datagrams to mobile nodes in the Internet. Each mobile node is always identified by its home address, regardless of its current point of attachment to the Internet. While situated away from its home, a mobile node is also associated with a care-of address, which provides information about its current point of attachment to the Internet. The protocol provides for registering the care-of address with a home agent. The home agent sends datagrams destined for the mobile node through a tunnel to the care- of address. After arriving at the end of the tunnel, each datagram is then delivered to the mobile node.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc5944.
Perkins Standards Track [Page 1]
RFC 5944 IP Mobility Support November 2010
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