職業(yè)學(xué)院通信工程技術(shù)專業(yè)-移動(dòng)ip節(jié)點(diǎn)技術(shù)-展示頁
2025-01-15 22:18本頁面
【正文】 務(wù)發(fā)展指數(shù)日趨提高，人們在生活品質(zhì)上也追求在移動(dòng)的狀態(tài)下輕松便捷高效的使用通訊設(shè)備，這就掀起了移動(dòng)通訊網(wǎng)發(fā)展的新端倪，移動(dòng) IP 節(jié)點(diǎn)技術(shù)獲得了飛速的發(fā)展，也在通訊中得到廣泛的使用。本文中，首先分析了有關(guān)移動(dòng) IP的相關(guān)概念，緊接著分析了移動(dòng)通信中移動(dòng) IP節(jié)點(diǎn)技術(shù)的實(shí)現(xiàn)，最后有探究了三角路由的相關(guān)問題探究 . 移動(dòng) IP 其實(shí)就是一種網(wǎng)絡(luò)通信和信息傳遞的協(xié)議，主要的功能就是保障計(jì)算機(jī)或者通訊設(shè)備在移動(dòng)的過程中在網(wǎng)絡(luò) IP 地址不發(fā)生變化、網(wǎng)絡(luò)通信不受限制和中斷的情況下對網(wǎng)絡(luò)開展陸續(xù)的訪問和連接 ,依據(jù)這一特性，移動(dòng) IP 對移動(dòng)通訊有著巨大的促進(jìn)作用和吸引力，真正實(shí)現(xiàn)了移動(dòng)通訊。移動(dòng) IP的關(guān)鍵技術(shù)有代理搜索、轉(zhuǎn)交地址、登陸和隧道技術(shù)等?？梢院唵蔚睦斫鉃榫哂杏谰?IP 地址的移動(dòng)終端。 registration reply process, and routing of the data packets towards the double protocol stack IPv4/ Discovery Agent discovery helps mobile node to confirm its position, and the mobile node must know which link it is, the home link or the foreign link. Through this process, the mobile node can make sure whether it has moved after the last registration. Agent searching is the most important precondition that cannot be absent to offer the roaming munication, for only by knowing it’s position, can mobile node registers its careof address obtained on foreign link on home agent properly. Then home agent can route the packets properly to mobile node according to the new way. After agent searching process, there es the registration, which keep the continuous contact between the mobile node and the home agent. Commonly, the home agent is a router in the home link of the mobile node, the mainly effect of which is transmitting the packets from other nodes to the roaming mobile node. When the mobile node is away from home link, it registers its careof address to its home agent. This is done through exchange of a Registration Request and Registration Reply messages (which are sent with UDP using well known port number 434). Depending on the method of attachment, the mobile node will register either directly with its home agent, or through a foreign agent, which forwards the registration to the home agent. The careof address can either be determined from a foreign agent’s advertisements (a foreign agent careof address), or by some external assignment mechanism such as DHCP (a colocated careof address). When the home agent receives the register message, it will maintain a register message WP=46table in the server, where the original registered care of address will be replaced by the new registered careof address. Then a reply message will be sent to the mobile node also by wellknown port 434. OK, all the register and reply process .the register, the packet can be routed in IP layer. Among all the routing process, our thesis emphasizes on the mobile node. The work of the mobile node mainly involves two parts, the one is that mobile node receives packets from other nodes, and the other is the mobile node actively municates with other nodes. If the mobile node receives packets from other nodes, there es two condition: one way is that its position is on the home route, then it will discover that the destination address of the packets is the home address, so it receives packets. The other way is that the mobile node is on the roaming foreign link, at this time, the packet’s destination address it receives will be the care of address transmitted by the home agent. In order to municate with other nodes only with its home address, the mobile node will dispose the packets like this: First, it will shuck off the IP head, so es out the home
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