THE WHATIS.COM WORD-OF-THE-DAY August 29, 2002 Mobile IPv6 ______________ TODAY'S SPONSOR: VeriSign - The Value of Trust
Secure all your Web servers now - with a proven 5-part strategy. The FREE Server Security Guide shows you how to deploy the latest encryption and authentication techniques, deliver transparent protection with the strongest security without disrupting users, and more. Get your FREE Guide now: http://WhatIs.com/r/0,,5277,00.htm?FreeGuide ______________ TODAY'S WORD: Mobile IPv6 See our definition with hyperlinks at http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci847445,00.html Mobile IPv6 (MIPv6) is a protocol developed as a subset of Internet Protocol version 6 (IPv6) to support mobile connections. MIPv6 is an update of the IETF (Internet Engineering Task Force) Mobile IP standard (RFC 2002) designed to authenticate mobile devices (known as mobile nodes) using IPv6 addresses. In traditional IP routing, IP addresses represent a topology. Routing mechanisms rely on the assumption that each network node will always have the same point of attachment to the Internet, and that each node's IP address identifies the network link where it is connected. In this routing scheme, if you disconnect a mobile device from the Internet and want to reconnect through a different network, you have to configure the device with a new IP address, and the appropriate netmask and default router. Otherwise, routing protocols have no means of delivering datagrams (packets), because the device's network address doesn't contain the necessary information about the node's network point of attachment to the Internet. MIPv6 allows a mobile node to transparently maintain connections while moving from one subnet to another. Each device is identified by its home address although it may be connecting to through another network. When connecting through a foreign network, a mobile device sends its location information to a home agent, which intercepts packets intended for the device and tunnels them to the current location. The IETF has since proposed an enhancement to MIPv6, Hierarchical MIPv6 (HMIPv6). RELATED TERMS: IPv6 http://searchwebmanagement.techtarget.com/sDefinition/0,,sid27_gci212389,00.html IP address http://searchwebmanagement.techtarget.com/sDefinition/0,,sid27_gci212381,00.html topology http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci213156,00.html node http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci212665,00.html netmask http://searchwebmanagement.techtarget.com/sDefinition/0,,sid27_gci214485,00.html subnet http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci213065,00.html HMIPv6 http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci847453,00.html ________________________ SELECTED LINKS: The IETF provides a draft of the Mobile IPv6 specification. http://www.ietf.org/internet-drafts/draft-ietf-mobileip-ipv6-18.txt The IPv6 Forum offers a white paper explaining Mobile IPv6. http://www.ipv6forum.com/navbar/papers/MobileIPv6_Whitepaper.pdf SearchNetworking.com has an article about "Mobile IP: The Unsung Hero." http://searchnetworking.techtarget.com/originalContent/0,289142,sid7_gci554837,00.html ______________________ WHATIS DISCUSSION FORUM | Challenge #13: Choosing an HTML editor Les is at the point where he needs to invest some money in a good HTML editor. He's confused about whether to invest in a high-end product that has features he's not yet ready to use, or go with something less expensive that he might outgrow. THE CHALLENGE: What is your favorite HTML editor? Recommend an HTML editor for Les to consider purchasing. http://whatis.discussions.techtarget.com/WebX?[EMAIL PROTECTED]@.1dcfae0e/113!viewtype= ______________________ QUIZ #7 | Protocols How much do you know about IT protocols? Take our quiz and find out! http://searchsystemsmanagement.techtarget.com/sDefinition/0,,sid20_gci558485,00.html ______________________________ RECENT ADDITIONS AND UPDATES [1] platform http://searchhp.techtarget.com/sDefinition/0,,sid6_gci212797,00.html [2] Power over Ethernet http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci846792_top1,00.html [3] How do you pronounce IT? http://whatis.techtarget.com/definition/0,,sid9_gci845059,00.html [4] messaging http://searchsystemsmanagement.techtarget.com/sDefinition/0,,sid20_gci212554,00.html [5] HDCD http://whatis.techtarget.com/definition/0,,sid9_gci843768,00.html ____________________________________________________________________ ::::::::::::::::::: WHATIS.COM CONTACTS ::::::::::::::::::: LOWELL THING, Site Editor ([EMAIL PROTECTED]) ____________________________________________________________________ MARGARET ROUSE, Assistant Editor ([EMAIL PROTECTED]) ___________________________________________________________________ :::::::::::::::::::: ABOUT THIS NEWSLETTER ::::::::::::::::::::: Published by TechTarget (http://www.techtarget.com) TechTarget - The Most Targeted IT Media Copyright 2002, All Rights Reserved. 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