交换机在当机后需要人工重启动,而且在网络瘫痪后无法带内管理,为了解决上述问题,课题实现了一个嵌入式系统。该系统利用SNMP协议获取交换机状态,在发现交换机故障后通过console口带外控制交换机自动处理故障,当故障无法处理时,通过GPRS模块通知网络中心。嵌入式系统在配线间进行了测试,测试结果表明,在使用系统后,交换机发生相同故障次数时,故障时间减少了90%,人工干预次数减少了8次。这个嵌入式系统实现了远程实时监控交换机和自动恢复交换机死机或端口故障的功能,减少了交换机故障持续时间,减轻了网络中心管理人员的负担,起到了良好的效果。%Manual reboot is required in case of switch halt,and in-band management which through Simple Network Management Protocol is disabled.In case of switch failure,the system initiates a self-debugging procedure out-of-band via the console.When the breakdown is beyond the capacity of the self-debugging procedure,the system informs the network center via GPRS.This system has undergone testing in the wiring closet.The result suggests that for ten fault times the embedded system could reduce fault duration by 90 percent and the number of manual intervention by 8 times,compared to switch failure cases without the embedded system.This embedded system facilitates the real time remote control over the switch and the automatic restoration from switch halt and port malfunction,reduces switch fault duration and is therefore effective in cutting the workload of network administrators.
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