數(shù)據(jù)通信 吉比特以太手冊

第1部分 吉比特以太網(wǎng)概述                   
 第1章 吉比特以太網(wǎng)：全面概述 3                   
 1.1 引言 4                   
 1.2 吉比特以太網(wǎng)的規(guī)模 5                   
 1.3 幻想破滅 7                   
 1.4 緩沖器或者受損 8                   
 1.5 在光纖中求得高速 9                   
 1.6 服務(wù)器限速 10                   
 1.7 吉比特的實現(xiàn) 11                   
                   
 第2章 吉比特以太網(wǎng)標(biāo)準(zhǔn) 13                   
 2.1 引言 14                   
 2.2 數(shù)據(jù)幀 16                   
 2.3 什么是吉比特以太網(wǎng) 17                   
 2.4 OSI模型 17                   
 2.4.1 數(shù)據(jù)鏈路層 18                   
 2.4.2 物理層 19                   
 2.5 以太網(wǎng)的幀 19                   
 2.5.1 目的地址 20                   
 2.5.2 源地址 21                   
 2.5.3 長度/類型 21                   
 2.5.4 數(shù)據(jù) 21                   
 2.5.5 幀校驗序列 22                   
 2.6 傳輸準(zhǔn)備 22                   
 2.7 封裝過程 25                   
 2.8 數(shù)據(jù)包 25                   
 2.9 物理編碼子層：8B/10B編碼 27                   
 2.10 串行/并行變換器 29                   
 2.11 光收發(fā)機(jī) 30                   
 2.12 媒質(zhì) 31                   
 2.13 逆過程 32                   
                   
 第3章 增強(qiáng)的CSMA/CD：分組突發(fā) 33                   
 3.1 引言 34                   
 3.2 背景介紹 35                   
 3.3 載波擴(kuò)展 36                   
 3.4 短幀的低利用率 36                   
 3.5 幀丟失 38                   
 3.6 分組突發(fā) 38                   
 3.7 短幀的較高利用率 40                   
 3.8 幀丟失減少 41                   
 3.9 后沖突 42                   
 3.10 結(jié)論 42                   
                   
 第4章 全雙工中繼器 43                   
 4.1 引言 44                   
 4.2 從中繼器到交換機(jī) 46                   
 4.3 全雙工中繼器初探 48                   
 4.4 全雙工中繼器的應(yīng)用 49                   
 4.5 內(nèi)部研究 51                   
 4.6 FIFO緩沖器 52                   
 4.7 漏桶模型 53                   
 4.8 判決 55                   
 4.9 非對稱流量控制 55                   
 4.10 鏈路部件 57                   
 4.11 結(jié)論 58                   
                   
 第5章 吉比特以太網(wǎng)：物理層和傳輸媒質(zhì)的選擇 61                   
 5.1 引言 62                   
 5.2 傳輸媒質(zhì)的條件 63                   
 5.3 吉比特以太網(wǎng)的物理層 63                   
 5.4 光PHY 65                   
 5.5 銅PHY 66                   
 5.6 目標(biāo)距離 67                   
 5.7 結(jié)論 68                   
 鳴謝 69                   
                   
 第2部分 吉比特以太網(wǎng)及相關(guān)規(guī)范                   
 第6章 IEEE的有關(guān)標(biāo)準(zhǔn)802.1p. 802.1Q和802.3x 73                   
 6.1 引言 74                   
 6.2 擁塞問題：標(biāo)準(zhǔn)的解決方案 75                   
 6.3 IEEE標(biāo)準(zhǔn)802.1p：多級消減 76                   
 6.3.1 GARP網(wǎng)絡(luò) 77                   
 6.3.2 消減 80                   
 6.4 IEEE標(biāo)準(zhǔn)802.1Q：虛擬LAN和優(yōu)先級判斷 81                   
 6.4.1 帶寬增加 82                   
 6.4.2 移動的經(jīng)驗 83                   
 6.4.3 修改后的以太網(wǎng)幀結(jié)構(gòu) 84                   
 6.5 優(yōu)先級 85                   
 6.6 IEEE標(biāo)準(zhǔn)802.3x：全雙工/流量控制 87                   
 6.6.1 點到點通信 87                   
 6.7 結(jié)論 89                   
                   
 第7章 CSMA/CD的增強(qiáng)型—虛擬沖突 91                   
 7.1 引言 92                   
 7.2 背景資料 92                   
 7.3 多媒體：交換或共享93                   
 7.4 多媒體需求 94                   
 7.5 虛擬沖突 96                   
 7.6 網(wǎng)絡(luò)直徑加倍 99                   
 7.7 帶寬保證和對優(yōu)先級的支持 100                   
 7.8 公平性 101                   
 7.9 結(jié)論 102                   
                   
 第8章 吉比特以太網(wǎng)LAN的服務(wù)質(zhì)量 105                   
 8.1 引言 106                   
 8.2 基本類型的定義：COS和QOS 108                   
 8.3 實現(xiàn)QOS的第一步 109                   
 8.4 一個企業(yè)范圍的解決方案 110                   
 8.5 QOS部件和激活器 111                   
 8.6 在數(shù)據(jù)格式一致的情況下可度量的帶寬 112                   
 8.7 分組或分組流的優(yōu)先級和資源預(yù)留 113                   
 8.8 排隊方法 114                   
 8.9 管理方法 116                   
 8.10 丟棄方法 116                   
 8.11 通過各種技術(shù)映射服務(wù)級別 117                   
 8.12 低成本芯片：一個重要的促進(jìn)因素 118                   
 8.13 選擇合適的QOS組合 119                   
 8.14 實現(xiàn)方案 121                   
 8.15 策略 122                   
 8.16 結(jié)論：QOS作為網(wǎng)絡(luò)控制的一種方法 122                   
                   
 第9章 在吉比特以太網(wǎng)中實現(xiàn)VLAN 123                   
 9.1 引言 124                   
 9.2 VLAN的定義 124                   
 9.3 吉比特以太網(wǎng)改變的規(guī)則 126                   
 9.4 廣播/同播控制 126                   
 9.5 在吉比特交換機(jī)上實現(xiàn)VLAN技術(shù) 129                   
 9.6 吉比特以太網(wǎng)和QOS 129                   
 9.7 設(shè)計吉比特VLAN 130                   
 9.8 VLAN標(biāo)準(zhǔn)和多廠家網(wǎng)絡(luò) 131                   
 9.9 在高速網(wǎng)絡(luò)中的VLAN和路由選擇 132                   
 9.9.1 內(nèi)部路由選擇/第三層交換 133                   
 9.9.2 外部路由選擇 133                   
 9.10 利用吉比特以太網(wǎng)和VLAN減緩骨干網(wǎng)的擁塞 133                   
 9.11 在第二級骨干網(wǎng)中利用VLAN減少擁塞 135                   
 9.12 具有吉比特功能的服務(wù)器集中區(qū)和工作組 136                   
 9.13 VLAN和吉比特以太網(wǎng)的規(guī)劃 136                   
 9.14 結(jié)論 139                   
                   
 第3部分 吉比特以太網(wǎng)和路由選擇                   
 第10章 吉比特以太網(wǎng)和多層交換/路由選擇 143                   
 10.1 引言 144                   
 10.2 可變性：一個擴(kuò)展的定義 145                   
 10.3 第三層交換：智能化和速率的結(jié)合 146                   
 10.4 在一個第三層的解決方案中要尋找什么 147                   
 10.5 點名：領(lǐng)先的第三層吉比特的解決方案 149                   
 10.6 配置交換吉比特以太網(wǎng) 153                   
 10.7 結(jié)論：網(wǎng)絡(luò)的未來 154                   
                   
 第11章 IP交換和吉比特以太網(wǎng) 157                   
 11.1 引言 158                   
 11.2 聯(lián)網(wǎng)技術(shù)的增值和采用 159                   
 11.3 以太網(wǎng)和TCP/IP的出現(xiàn) 160                   
 11.4 聯(lián)網(wǎng)領(lǐng)域中的進(jìn)步的市場認(rèn)可 163                   
 11.5 吉比特以太網(wǎng)和新的路由器結(jié)構(gòu)的需求 165                   
 11.6 IP的交換方法 167                   
 11.7 流量分類 168                   
 11.8 IP交換流量類型 169                   
 11.9 交換結(jié)構(gòu)的考慮因素 171                   
 11.10 服務(wù)質(zhì)量 173                   
 11.11 支持同播 175                   
 11.12 價格和成本因素 175                   
 11.13 結(jié)論 176                   
                   
 第12章 幀中信元和吉比特以太網(wǎng) 179                   
 12.1 引言 180                   
 12.2 ATM的優(yōu)點(QOS和流量控制) 181                   
 12.3 以太網(wǎng)的優(yōu)點 181                   
 12.4 兩方面的最佳組合——采用幀的ATM協(xié)議(CIF) 182                   
 12.4.1 工作站接入 182                   
 12.5 吉比特LAN干線上的CIF 183                   
 12.6 端到端服務(wù)質(zhì)量的要求 185                   
 12.7 端到端顯式速率流量控制的需要 185                   
 12.8 ATM協(xié)議——一套完整的協(xié)議組 188                   
 12.9 IETF的選擇：TCP/IP和RSVP 189                   
 12.9.1 QOS路由選擇——避免無限延遲問題 190                   
 12.9.2 TCP的流量控制 191                   
 12.9.3 IETF協(xié)議結(jié)論 192                   
 12.10 幀中信元設(shè)計概述 192                   
 12.11 CIF-ES 194                   
 12.11.1 端站接片 194                   
 12.11.2 端站的ATM信令 194                   
 12.11.3 端站中的TCP 195                   
 12.11.4 QOS排隊 196                   
 12.11.5 ABR流量控制標(biāo)記 196                   
 12.12 延遲變化 198                   
 12.13 工作站的CPU開銷 198                   
 12.14 結(jié)論 199                   
 參考文獻(xiàn) 200                   
                   
 第13章 NT交換機(jī)：第四層吉比特以太網(wǎng)和Windows NT業(yè)務(wù) 201                   
 13.1 引言 202                   
 13.2 明確應(yīng)用的需要 203                   
 13.2.1 第一層的要求：接入桌面的高速以太網(wǎng) 204                   
 13.2.2 第二層/第三層要求：無瓶頸的服務(wù)器集中 205                   
 13.2.3 第四層的要求：支持新型的應(yīng)用 206                   
 13.2.4 超出L2/L3/L4的帶寬 207                   
 13.3 NT交換機(jī) 208                   
 13.3.1 使用NT交換機(jī) 209                   
 13.4 NT交換機(jī)的結(jié)構(gòu) 211                   
 13.5 Windows NT和NT交換機(jī) 213                   
 13.5.1 路由選擇業(yè)務(wù)——Steelhead 213                   
 13.5.2 管理業(yè)務(wù) 215                   
 13.5.3 安全業(yè)務(wù) 215                   
 13.5.4 目錄業(yè)務(wù) 216                   
 13.5.5 NT交換機(jī)的擴(kuò)展性 216                   
 13.6 NT交換機(jī)的動態(tài)交換編輯器 217                   
 13.7 NT交換機(jī)的第四層吉比特以太網(wǎng)交換引擎 218                   
 13.8 NT交換機(jī)聯(lián)網(wǎng)模型 220                   
 13.8.1 簡化聯(lián)網(wǎng) 221                   
 13.8.2 增強(qiáng)網(wǎng)絡(luò)的智能化和控制功能 221                   
 13.8.3 強(qiáng)調(diào)用戶專門的要求 223                   
 13.9 結(jié)論：NT交換機(jī)的未來 225                   
                   
 第4部分 吉比特以太網(wǎng)和其它高速LAN的比較                   
 第14章 吉比特以太網(wǎng)和其它高速LAN的比較 229                   
 14.1 引言 230                   
 14.2 ATM 231                   
 14.3 FDDI 233                   
 14.4 100VG-AnyLAN 234                   
 14.5 光纖信道 237                   
 14.6 HIPPI 240                   
 14.7 快速以太網(wǎng) 241                   
 14.8 結(jié)論 242                   
                   
 第15章 在骨干網(wǎng)中選擇ATM和吉比特以太網(wǎng) 245                   
 15.1 引言 246                   
 15.2 概述 246                   
 15.3 LAN的骨干網(wǎng)技術(shù) 247                   
 15.4 ATM作為LAN的骨干網(wǎng) 249                   
 15.5 LAN骨干網(wǎng)比較 252                   
 15.5.1 例1：廣域CAD/CAM環(huán)境 252                   
 15.5.2 例2：財政業(yè)務(wù)環(huán)境 253                   
 15.6 結(jié)論 258                   
                   
 第16章 吉比特以太網(wǎng)和ATM：等級性能的互補技術(shù) 259                   
 16.1 引言 260                   
 16.1.1 新的帶寬驅(qū)動者 261                   
 16.1.2 兩種高速解決方案 262                   
 16.1.3 互補的設(shè)計目標(biāo) 262                   
 16.2 定義吉比特以太網(wǎng) 262                   
 16.2.1 802.1p. 802.1QRSVP 264                   
 16.2.2 以太網(wǎng)的帶寬升級 264                   
 16.3 了解ATM 265                   
 16.3.1 等級和信元交換 266                   
 16.3.2 LAN仿真 266                   
 16.3.3 ATM服務(wù)質(zhì)量 267                   
 16.3.4 ATM的解決方案：小結(jié) 267                   
 16.4 ATM和吉比特以太網(wǎng) 269                   
 16.4.1 ATM QOS和以太網(wǎng)COS 269                   
 16.4.2 在混合的ATM/以太網(wǎng)環(huán)境中傳遞QOS 270                   
 16.4.3 優(yōu)化網(wǎng)絡(luò)控制 271                   
 16.5 結(jié)論和應(yīng)用指導(dǎo) 273                   
                   
 第5部分 向吉比特以太網(wǎng)的過渡                   
 第17章 制訂向吉比特以太網(wǎng)過渡的計劃 279                   
 17.1 引言 280                   
 17.2 過渡簡便 280                   
 17.2.1 仍是以太網(wǎng) 281                   
 17.2.2 幀結(jié)構(gòu) 281                   
 17.2.3 網(wǎng)管 282                   
 17.3 與以太網(wǎng)的不同 282                   
 17.3.1 新的線路編碼 283                   
 17.3.2 處理數(shù)據(jù)容量 283                   
 17.3.3 電纜計劃 284                   
 17.4 過渡方案研究 284                   
 17.4.1 服務(wù)器群 285                   
 17.4.2 交換骨干網(wǎng) 285                   
 17.4.3 桌面系統(tǒng) 287                   
 17.4.4 FDDI 288                   
 17.5 結(jié)論 290                   
                   
 第18章 將吉比特以太網(wǎng)并入現(xiàn)有網(wǎng)絡(luò) 291                   
 18.1 概述 292                   
 18.2 傳統(tǒng)的LAN 293                   
 18.2.1 接入方法 294                   
 18.2.2 速率和供電 294                   
 18.2.3 交換還是共享 295                   
 18.2.4 服務(wù)器 296                   
 18.2.5 第2層和第3層 297                   
 18.2.6 管理 297                   
 18.3 新技術(shù)與應(yīng)用——多媒體 298                   
 18.3.1 IP同播 298                   
 18.3.2 VLAN 300                   
 18.3.3 COS/QOS 300                   
 18.3.4 全雙工 301                   
 18.3.5 流量控制 301                   
 18.4 采用方式 301                   
 18.4.1 骨干網(wǎng)升級 303                   
 18.4.2 高性能服務(wù)器 305                   
 18.4.3 高性能桌面系統(tǒng) 306                   
 18.4.4 物理布線 306                   
 18.4.5 時線 306                   
                   
 第19章 改變以太網(wǎng)的規(guī)模 307                   
 19.1 引言 308                   
 19.2 定義帶寬體系 309                   
 19.2.1 10Mbit/s以太網(wǎng) 310                   
 19.2.2 100Mbit/s以太網(wǎng) 310                   
 19.2.3 吉比特以太網(wǎng) 311                   
 19.2.4 共享連接還是交換連接 311                   
 19.2.5 各級的設(shè)備 312                   
 19.3 網(wǎng)絡(luò)需求與以太網(wǎng)帶寬體系的匹配 312                   
 19.3.1 客戶機(jī)接入 313                   
 19.3.2 桌面系統(tǒng)的集中 314                   
 19.3.3 服務(wù)器接入 315                   
 19.3.4 數(shù)據(jù)中心集中 316                   
 19.3.5 骨干網(wǎng) 316                   
 19.4 可伸縮的以太網(wǎng)設(shè)計的規(guī)則 317                   
 19.4.1 應(yīng)用類型 317                   
 19.4.2 網(wǎng)絡(luò)用戶模型 318                   
 19.5 設(shè)計全面可伸縮的以太網(wǎng)網(wǎng)絡(luò) 319                   
 19.6 結(jié)論 321                   
                   
 第6部分 吉比特以太網(wǎng)設(shè)計導(dǎo)論                   
 第20章 怎樣建立以太網(wǎng) 325                   
 20.1 引言 326                   
 20.2 問題的提出 326                   
 20.3 監(jiān)測網(wǎng)絡(luò) 327                   
 20.4 分析業(yè)務(wù)模型 327                   
 20.5 分析應(yīng)用 328                   
 20.6 預(yù)測未來 328                   
 20.7 確定步驟 328                   
 20.8 桌面連接 329                   
 20.9 上行鏈路 330                   
 20.10 服務(wù)器室 333                   
 20.11 伸縮式交換機(jī) 335                   
 20.12 對桌面實施吉比特以太網(wǎng)連接 336                   
 20.13 把吉比特以太網(wǎng)作為上行鏈路 339                   
 20.14 在服務(wù)器室內(nèi)實現(xiàn)吉比特以太網(wǎng) 341                   
 20.15 在伸縮交換機(jī)中運用吉比特以太網(wǎng) 344                   
 20.16 結(jié)論 345                   
                   
 第21章 為吉比特以太網(wǎng)選擇服務(wù)器元件 347                   
 21.1 引言 348                   
 21.2 現(xiàn)有服務(wù)器中的吉比特以太網(wǎng) 349                   
 21.3 了解整個服務(wù)器系統(tǒng) 350                   
 21.4 性能因素 351                   
 21.5 硬件子系統(tǒng) 351                   
 21.6 單處理器系統(tǒng) 351                   
 21.7 多處理器系統(tǒng) 352                   
 21.8 存儲器子系統(tǒng) 353                   
 21.8.1 存儲器類型 353                   
 21.8.2 高速緩存 354                   
 21.8.3 時延與等待狀態(tài) 355                   
 21.8.4 存儲器存取 356                   
 21.9 磁盤子系統(tǒng) 356                   
 21.10 PCI芯片組 357                   
 21.10.1 PCI總線寬度 358                   
 21.10.2 多PCI總線系統(tǒng) 358                   
 21.10.3 PCI的頻率 358                   
 21.10.4 PCI的等待時間 359                   
 21.10.5 PCI存儲器的命令 360                   
 21.10.6 PCI的緩存/郵寄 361                   
 21.11 適配器硬件 361                   
 21.11.1 總線主控與受控結(jié)構(gòu) 362                   
 21.11.2 適配器存儲容量和接收超限 363                   
 21.11.13 流量控制 364                   
 21.11.14 硬件/軟件接口 364                   
 21.11.15 半雙工與全雙工 365                   
 21.11.16 中斷的代價 366                   
 21.11.17 提高CPU的利用率 367                   
 21.12 軟件子系統(tǒng) 376                   
 21.12.1 核心操作系統(tǒng) 368                   
 21.12.2 復(fù)制數(shù)據(jù)的代價 368                   
 21.12.3 協(xié)議堆棧 370                   
 21.12.4 TCP/IP協(xié)議 370                   
 12.12.5 網(wǎng)絡(luò)適配器設(shè)備驅(qū)動程序 372                   
 21.13 硬件與軟件間的相互作用 373                   
 21.13.1 實際與理論中的總線帶寬 373                   
 21.4 展望 375                   
 21.14.1 硬件子系統(tǒng) 375                   
 21.14.2 軟件子系統(tǒng) 376                   
 21.15 吉比特以太網(wǎng)是服務(wù)器連接的選擇 377                   
                   
 第22章 如何優(yōu)化吉比特以太網(wǎng)終端站的性能 379                   
 22.1 引言 380                   
 22.2 確定問題 383                   
 22.3 對網(wǎng)絡(luò)適配器性能的衡量 383                   
 22.4 竊取CPU周期 385                   
 22.5 優(yōu)化主機(jī)的網(wǎng)絡(luò)適配器的設(shè)計 387                   
 22.6 規(guī)范和即將出現(xiàn)的規(guī)范對網(wǎng)絡(luò)適配器設(shè)計的影響 390                   
 22.6.1 IEEE802.3x 390                   
 22.6.2 IEEE802.1p/Q 390                   
                   
 第23章 如何在吉比特以太網(wǎng)LAN上對時間敏感業(yè)務(wù)劃分優(yōu)先級 391                   
 23.1 引言 392                   
 23.2 網(wǎng)絡(luò)時延來自何處 393                   
 23.2.1問題：帶寬受限的網(wǎng)絡(luò)部分 394                   
 23.2.2問題：擁塞的網(wǎng)絡(luò)部分 394                   
 23.2.3問題：擁塞的網(wǎng)間設(shè)備 394                   
 23.2.4問題：速率不同的各部分間進(jìn)行業(yè)務(wù)傳遞 396                   
 23.3 解決辦法 396                   
 23.4 解決辦法：網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)的設(shè)計 397                   
 23.4.1 低時延骨干網(wǎng) 398                   
 23.4.2 服務(wù)器的互聯(lián) 399                   
 23.4.3 為獲取低時延的專用客戶/桌面連接 400                   
 23.4.4 使網(wǎng)絡(luò)中繼段最少 401                   
 23.4.5 拓?fù)浣Y(jié)構(gòu)的概述 403                   
 23.5 解決辦法：處理擁塞 404                   
 23.5.1 鏈路上的擁塞 404                   
 23.5.2 解決交換機(jī)/路由器中的擁塞 405                   
 23.5.3 超負(fù)荷所引起的阻塞 406                   
 23.5.4 速率不匹配 407                   
 23.6 解決辦法：運用協(xié)議解決擁塞 407                   
 23.6.1 RSVP 407                   
 23.6.2 RSVP的作用 408                   
 23.6.3 MAC層協(xié)議 409                   
 23.6.4 IEEE 802.1p 410                   
                   
 第24章 建立一個數(shù)據(jù)的公用事業(yè) 411                   
 24.1 引言 412                   
 24.2 簡單就是勝利 413                   
 24.3 本地數(shù)據(jù)網(wǎng)——錯失良機(jī) 413                   
 24.4 簡化的時機(jī)到來了 415                   
 24.5 數(shù)據(jù)公用事業(yè)——“如果建造這樣的設(shè)施, 其就會實現(xiàn)” 416                   
 24.6 數(shù)據(jù)公用事業(yè)的特征 417                   
 24.7 以太網(wǎng)占優(yōu)勢 417                   
 24.8 校園數(shù)據(jù)基礎(chǔ)設(shè)施——一種新的模式 418                   
 24.9 能力 419                   
 24.10 簡單化 420                   
 24.11 怎樣建立一個數(shù)據(jù)公用事業(yè) 421                   
 24.12 結(jié)論 422                   
                   
 第25章 管理吉比特以太網(wǎng) 423                   
 25.1 引言 424                   
 25.2 以太網(wǎng)管理的發(fā)展 425                   
 25.3 吉比特以太網(wǎng)規(guī)范的不同之處 426                   
 25.3.1 中繼器功能 427                   
 25.3.2 突發(fā)模式計數(shù)器 427                   
 25.3.3 沖突算法 427                   
 25.3.4 計數(shù)器長度 428                   
 25.3.5 自動協(xié)商 428                   
 25.3.6 物理層接口 428                   
 25.4 目前應(yīng)用的好處 428                   
 25.5 吉比特以太網(wǎng)管理工具 429                   
 25.6 實現(xiàn)方面的問題 431                   
 25.7 結(jié)論 432                   
                   
 第7部分 可利用的吉比特以太網(wǎng)硬件                   
 第26章 吉比特以太網(wǎng)交換機(jī)和集線器的選擇準(zhǔn)則 435                   
 26.1 引言 436                   
 26.2 不斷增加的痛苦 437                   
 26.3 這一名稱中包含什么內(nèi)容呢 438                   
 26.4 他們稱我為流浪漢 438                   
 26.5 能否進(jìn)行質(zhì)量控制 439                   
 26.6 堆疊和分立 440                   
 26.7 高級機(jī)箱 443                   
 26.8 內(nèi)部情節(jié) 444                   
 26.9 容量問題 445                   
 26.10 所有后退的東西 446                   
 26.11 進(jìn)行流控 446                   
 26.12 對優(yōu)先權(quán)劃分的強(qiáng)烈要求 447                   
 26.13 虛擬實現(xiàn) 448                   
 26.14 第3層的概貌 448                   
 26.15 管理方式的轉(zhuǎn)變 449                   
 26.16 對于零售價的揭示 450                   
 26.17 集線器群體 450                   
 26.18 在插件板/卡方面 452                   
 26.19 結(jié)論 453                   
                   
 第27章 第一代吉比特以太網(wǎng)產(chǎn)品 455                   
 27.1 引言 456                   
 27.2 Extreme公司的Summit2型交換機(jī) 456                   
 27.2.1 在速率上的競爭者 457                   
 27.2.2 交換方面 458                   
 27.2.3 競爭的存在 459                   
 27.3 Torrent的IP9000型吉比特路由器 459                   
 27.3.1 關(guān)于產(chǎn)品的基本內(nèi)容 460                   
 27.3.2 數(shù)據(jù)包的路徑 461                   
 27.4 3Com的Corebuilder3500LAN交換機(jī) 462                   
 27.4.1 內(nèi)部情況 463                   
 27.4.2 關(guān)于數(shù)據(jù)流 464                   
 27.5 3Com的Corebuilder9000數(shù)據(jù)中心交換機(jī) 465                   
 27.5.1 兩種選擇 465                   
 27.5.2 故障定位 467                   
 27.6 Alteon的Alteon/NIC與交換機(jī) 467                   
 27.6.1 方案的細(xì)節(jié)問題 468                   
 27.6.2 支撐部件 469                   
 27.6.3 硬件上的提高 469                   
 27.7 Gigalabs的Gigastar100 470                   
 27.7.1 發(fā)展動力 470                   
 27.7.2 管理價格 472                   
                   
                   
 附錄 475                   
 供應(yīng)商名單 476                   
 索引 487                   
 作者簡介 530