求助：路由器冗余

公司在上海，Rt1路由器上面有3跟专线分别连到北京Rt3，广州RT4和深圳RT5，我现在想在上海加一台路由器RT2，座位RT1的冗余，想实现在RT1不可用的情况下，自动切换到RT2。
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增加链路

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: ~6 ?6 ^& k8 g7 O) FAlthough the road is far away, as long as we go, we’ll arrive. Although the things are difficult, as long as we do, we’ll achieve.
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发现自己变得越来越懒了.....

lease line 的接口是什么类型的？

看帖回帖是美德！:lol

好好 学习了 确实不错

我是来刷分的，嘿嘿

学习了，不错，讲的太有道理了

小手一抖，金币到手！