【正文】 LZ7507AAccesslist 1 permit // loopback 0 address of MSTJ7507A在上面的配置下，Tag Switching 在限于目標地址是 MultiProtocol BGP neighbor 的Core Router 的 loopback 地址，大大減輕了 Core Router 在 Lable 分配上的開銷。從其它模塊學到的路由在進入 Core 之前必須先進行 Aggregate 或 Summarize，以免造成對 Core 的路由影響。 B2nd 12022MHMG12022A7 / 69解釋:(1) 設備類型為 “6509” 代表 Catalyst 6509 switch 的 LAN switch 部分； (2) 設備類型為 “6509R” 代表 Catalyst 6509 switch 的 routing 部分：6509R1 代表安裝在 6509 的 primary supervisory card 上的 MSFC feature card；6509R2 代表安裝在 6509 的 Redundant supervisory card 上的 MSFC feature card。深圳 IP 城域網(wǎng)一期工程的建設目標是將 IP 城域網(wǎng)建成為數(shù)據(jù)業(yè)務的統(tǒng)一骨干平臺，在此平臺上為政府、企業(yè)、學校提供高速接入，同時提供 VPN 等增值業(yè)務。1 / 69深圳市 IP城域網(wǎng)組網(wǎng)技術方案深圳電信局新技術開發(fā)中心2 / 69目 錄一、設計原則 ....................................................................................................................................................................3二、設備用途說明和命名規(guī)則 ........................................................................................................................................6 SITE 代碼 ................................................................................................................................................................6 設備命名規(guī)則 ........................................................................................................................................................6 設備用途描述 ........................................................................................................................................................7三、網(wǎng)絡架構 ..................................................................................................................................................................11 核心骨干模塊 (BACKBONE) ................................................................................................................................11 INTERNET(163/169)連接點模塊 ..........................................................................................................................13 IP VPN 服務模塊 .................................................................................................................................................14 商業(yè) INTERNET 接入模塊 ....................................................................................................................................18 小區(qū) INTERNET 接入模塊 ....................................................................................................................................20 政府上網(wǎng)接入模塊 ..............................................................................................................................................22 主機托管模塊 ......................................................................................................................................................23四、設備互連 ..................................................................................................................................................................25 遠程連接 ..............................................................................................................................................................25 本地連接 ..............................................................................................................................................................25 設備插槽分配策略 ..............................................................................................................................................26 VLAN 編號和用途說明 ......................................................................................................................................26五、IP 地址 .....................................................................................................................................................................29 IP 地址模式 .........................................................................................................................................................29 域內(nèi)路由協(xié)議(IGP) .............................................................................................................................................29 IP 地址分配 .........................................................................................................................................................29 IP 子網(wǎng)規(guī)劃 .........................................................................................................................................................30六、和 163/169 的連接 ...................................................................................................................................................33 缺省路由 ..............................................................................................................................................................33 EBGP 出口路由設計 ...........................................................................................................................................34 在多出口上實現(xiàn)流量均衡 ..................................................................................................................................34七、MPLS VPN PECE 的連接 ....................................................................................................................................36八、VPN 的 INTERNET 接入 ......................................................................................................................................38 VPN INTERNET 網(wǎng)關 ............................................................................................................................................38 VPDN FOR VPN ...................................................................................................................................................40九、NMS 網(wǎng)段 ...............................................................................................................................................................42十、安全控制 .............................................................................