电信科学 ›› 2013, Vol. 29 ›› Issue (9): 132-136.doi: 10.3969/j.issn.1000-0801.2013.09.026

• 运营创新论坛 • 上一篇    下一篇

宽带远程接入服务器冗余热备份技术在IP城域网中的应用

王贤锋,刘涛   

  1. 中国电信股份有限公司徐州分公司 徐州 221000
  • 出版日期:2013-09-20 发布日期:2017-06-22

Application of Redundancy and Standby Technology for BRAS in the Metropolitan Area Network

Xianfeng Wang,Tao Liu   

  1. Xuzhou Branch of China Telecom Co., Ltd., Xuzhou 221000, China
  • Online:2013-09-20 Published:2017-06-22

摘要:

在分析徐州城域网现状的基础上,提出了解决BRAS单点故障的冗余热备份技术,对该技术的应用方案进行了详细的设计。该方案通过主备BRAS设备间信息同步及基于隧道的重定向流量引导等技术,实现了主备BRAS之间的无缝切换,即使在BRAS 及其相连链路出现故障的情况下,也不会影响用户宽带业务的正常使用。

关键词: BRAS, 冗余, 备份, VRRP, BFD

Abstract:

Based on analyzing the present situation of the Xuzhou metropolitan area network, the redundancy and standby technology to solve the single points of failure for BRAS was presented and a detailed scheme was designed. The information synchronization between main and standby BRAS and redirect for the flow guide based on tunnel technology were used to realize seamless switching between main and standby BRAS. Even the BRAS and its link failed, the broadband was in normal use.

Key words: broadband remote access server, redundancy, standby, VRRP, BFD

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