创造网络通讯新时代方案宽带管理计费系统Srun3000安全认证网络管理计费系统（BRAS+SRUN）解决方案SRUN3000宽带管理计费解决方案目录I背景及需求分析.........................................................................................1I.1运营网PPPoE的优势...........................................................................1I.2与时俱进，PPPoE的IPV6接入...............................................................2IIBRAS服务器+SRUN宽带认证管理解决方案.........................................................2II.1高性能宽带接入BRAS介绍....................................................................2II.1.1主要优势..........................................................错误！未定义书签。II.1.2BRAS解决方案.................................................错误！未定义书签。II.2高性能的安全认证网络管理计费系统SRUN3000...........................................9II.2.1主要组成部分...........................................................................9II.2.2系统结构图............................................................................10II.2.3Srun3000安全认证网络管理计费系统特点......................................11高性能.........................................................................................11可伸缩性......................................................................................11可扩展性......................................................................................12可靠性.........................................................................................13安全性.........................................................................................13易管理性......................................................................................13II.2.4功能列表..............................................................................14II.2.5用户管理功能.........................................................................15IIISrun3000安全认证网络管理计费系统的安全性功能..........................................17III.1.1防止ARP..............................................................................17III.1.2用户上网行为管理..................................................................