IP城域网业务控制层BRAS可靠性设计方案探讨

Discussion on the Reliability Design of BRAS in IP MAN Service Control Layer

BRAS作为IP城域网业务控制层管理用户及流量的核心设备,其可靠性设计是实现城域网高QoS的重要保证。在目前BRAS热备技术尚不完善的情况下,本文提出了端口聚合、分场景冷备等多种可靠性设计方案,并对各种方案的优劣势及适用场景进行了分析和探讨。

As a core network equipment, BRAS manages subscribers and flow in IP MAN. It is very important of the reliability design of BRAS to achive good IP MAN QoS. The hot standby technology of BRAS is not available at present. This paper presents the relliabilty design proposals of the port aggregation and cold standby. The advantages and disad- vantages of these design proposals are given.