竭诚为您提供优质文档/双击可除wifi标准协议,篇一：802.11无线wifi协议学习手册--无线网络权威指南(第二版全)802.11无线网络权威指南802.11无线网络权威指南(第2版)802.11无线网络权威指南第1页,共508页802.11无线网络权威指南文档密级目录802.11无线网络权威指南................................................. ................................................... (1)(第2................................................... . (1)目录................................................. ................................................... . (3)序................................................. ................................................... .........................................14前言................................................. ................................................... ......................................16第1章无线网络导论................................................. ................................................... . (24)1.1为何需要无线？1.1.1无线频谱：关键资源................................................. .........................251.2无线网络的特色1.2.1没有实体界 (27)1.2.2动态实体介质................................................. (27)24271.2.3安全性................................................. .. (28)1.2.4标准的好处................................................. . (29)第2章802.11网络概论................................................. ................................................... .. (31)2.1ieee802网络技术规格2.2802.11相关术语及其设计332.2.1网络类型................................................. . (34)312.2.2再论传输系统................................................. (37)2.2.3网络界限................................................. . (38)2.3802.11网络的运作方式2.3.1网络服务................................................. ...........................................402.4移动性的支持2.4.1移动性网络设计................................................. .. (45)第3章802.11mac.......................................... ................................................... (47)3.1mac所面临的挑战483.1.1射频链路质量................................................. (48)40443.1.2隐藏节点的问题................................................. ................................493.2mac访问控制与时钟3.2.2帧间隔................................................. .. (52)3.2.3帧间隔与优先程度................................................. .. (53)503.2.1载波监听功能与网络分配矢量................................................. .. (51)3.3利用dcF进行竞争式访问3.3.1dcF与错误复原................................................. .. (55)3.3.2使用重传计数器................................................. ................................553.3.3dcF与延迟................................................. (55)54802.11无线网络权威指南文档密级3.3.4spectralink语音优先性................................................. (56)3.3.5帧的分段与重组................................................. .. (57)3.3.6帧格式................................................. ...............................................583.3.7Framecontrol3.3.9address位................................................. (58)3.3.8duration/id 位................................................. .. (62)位................................................. . (62)3.3.10basicservicesetid(bssid)..................... (63)3.3.11顺序控制位................................................. ......................................633.3.12帧主体................................................. .............................................643.3. 13帧检验序列（Fcs）............................................ ............................643.4802.11对上层协议的封装653.5竞争式数据服务3.5.1广播与组播数据或管理帧................................................. ..................663.5.2单点传播帧................................................. ........................................673.5.3省电程序.................................................多种速率支持（multiratesupport）............................... ...................713.6帧的处理与桥接723.6.1无线介质到有线介质（802.11至以太网）........................................733.6.2有线介质至无线介质（wiredmediumtowirelessmedium）...........743.6.3服务质量延伸功能................................................. .. (75)第4章802.11帧封装细节................................................. ................................................... .76664.1数据帧4.1.1Framecontrol（帧控制）............................................... . (77)4.1.2duration（持续时 (77)764.1.3地址与dsbit.............................................. .......................................794.1.4数据帧的次类型................................................. ................................814.1.5数据帧的封装................................................. ....................................824.2控制帧4.2.1一般的帧控制位................................................. .. (85)4.2.2Rts（请求发送）............................................... ................................864.2.3cts（允许发送）............................................... .. (87)854.2.4ack（应答）......................................................................................884.2.5ps-po ll（省电模式一轮询）............................................... ................894.3管理帧4.3.1管理帧的结构................................................. ....................................904.3.2长度固定的管理帧元件................................................. ......................914.3.3管理帧的信息元素................................................. .............................994.3.4管理帧的类型................................................. ..................................1124.4帧发送以及连接与身份认证状态4.4.1帧等级................................................. (117)第4页,共508页90116802.11无线网络权威指南第5章有线等级隐私（wep）............................................ (119)文档密级5.1wep的密码学背景1195.1.1串流密码锁的安全性................................................. .......................1205.1.2密码政治学................................................. ......................................1215.2wep的加密机制5.2.1wep的数据处理................................................. .. (122)5.2.2wep的帧格式................................................. (125)1215.3关于wep的各种问题5.3.1Rc4在密码学上的性质................................................. . (126)5.3.2wep统设计上的瑕疵................................................. (126)5.3.3针对wep密钥的还原攻击................................................. .............1275.3.4防范密钥还原攻击................................................. (128)1265.4动态wep第6章802.1x使用者身份认证................................................. . (130)1296.1可延伸身份认证协议（eap）6.1.1eap的封包格式................................................. (131)6.1.2eap的要求与回复................................................. ...........................1326.1.3eap身份认证方。