【正文】 ....................................................................................................1 地址的分 類 ................................................................................................................2 網(wǎng)絡(luò)掩碼和默認(rèn)掩碼 ..................................................................................................4 特殊地址 ....................................................................................................................5 專用地址 ....................................................................................................................6 單播、多播和廣播地址 ..............................................................................................6 子網(wǎng) 劃分 .....................................................................................................................7 三級(jí)層次結(jié)構(gòu) .............................................................................................................8 子網(wǎng)掩碼 ....................................................................................................................9 設(shè)計(jì)子網(wǎng) .................................................................................................................. 10 習(xí) 題 ..................................................................................................................................... 12 第 2 章 園區(qū)網(wǎng)中的廣播流量控制 ................................................................ 13 VLAN 概述 .................................................................................................................. 13 交換機(jī)的端口 ............................................................................................................... 15 訪問(wèn)鏈接 ............................................................................................................... 15 訪問(wèn)鏈接 的總結(jié) .................................................................................................... 18 實(shí)現(xiàn) VLAN 的機(jī)制 ...................................................................................................... 18 直觀地描述 VLAN ................................................................................................ 19 需要 VLAN 間通信時(shí)怎么辦 ................................................................................. 20 VLAN 的匯聚鏈接 ....................................................................................................... 20 與 ISL ....................................................................................................... 22 ........................................................................................................... 22 ISL（ Inter Sw itch Link） ....................................................................................... 23 VLAN 間路由 ............................................................................................................... 24 VLAN 間路由的必要性 ......................................................................................... 24 使用路由器進(jìn)行 VLAN 間路由 ................................................................................ 25 配置 VLAN 實(shí)例 .......................................................................................................... 28 Port VLAN 的配置 ................................................................................................. 29 Tag VLAN 配置 ...................................................................................................... 29 第 3 章 交換網(wǎng)絡(luò)中的冗余鏈路管理 ............................................................. 31 3 交換機(jī) 網(wǎng)絡(luò)中的冗余鏈路 ......................................................................................... 31 生成樹(shù)協(xié)議概述 ........................................................................................................ 31 STP 協(xié)議工作原理 ..................................................................................................... 32 生成樹(shù)協(xié)議介紹 .................................................................................................... 32 BPDU 編碼 ............................................................................................................ 33 形成一個(gè)生成樹(shù)所必需決定的要素 .......................................................................... 34 決定根交換機(jī) ........................................................................................................ 34 決定根端口 ........................................................................................................... 34 認(rèn)定 LAN 的指定交換機(jī) ....................................................................................... 34 決定指定端口 ........................................................................................................ 35 拓?fù)渥兓?................................................................................................................... 35 STP 的端口狀態(tài) ........................................................................................................ 36 STP/MSTP 生成樹(shù)協(xié)議 ............................................................................................... 36 RSTP 簡(jiǎn)述 .............................................................................................................. 36 PVST/PVST+ ........................................................................................................... 38 MISTP/MSTP ........................................................................................................... 39 配置 STP、 RSTP ..................................................................................................... 40 以太網(wǎng)鏈路聚合 ........................................................................................................ 41 網(wǎng)絡(luò)壓力 ............................................................................................................... 41 流量平衡 ............................................................................................................... 42 配置 aggregate port ...................................