MX250双WAN故障无法转移The MX250 dual WAN fault cannot be transferred

[鸟不拉屎大王]

两台MX250，主备模式，两条城域网线路，联通和电信，分别插入WAN1和WAN2，静态IP，VIP虚拟IP，主上行链路设置为WAN2，负载均衡启用，在测试中，当WAN2断线时，理论上这个时候的流量应该会从WAN1出口通信，但实际上WAN2断线会导致整个网络都断网网

在前期测试环境中调整了各种可能的选项反复测试都是如此。

Two MX250, active and standby mode, two metropolitan area network lines, Unicom and Telecom, respectively, insert WAN1 and WAN2, static IP, VIP virtual IP, the main uplink is set to WAN2, load balancing enabled, in the test, when WAN2 is disconnected, theoretically the traffic at this time should be from WAN1 egress communication, but in fact WAN2 disconnection will cause the entire network to be disconnected.

This is true of the various possible options that were adjusted in the pre-test environment.

[鸟不拉屎大王]

补充：

目前在生产环境，日常使用两条网络负载均衡都很正常，流量均匀的遍布在WAN1和WAN2上，唯独夜间做故障模拟测试的时候，拔掉WAN2直接断网，负载均衡关闭也是如此

Supplement:

At present, in the production environment, the daily use of two network load balancers are normal, traffic is evenly spread on WAN1 and WAN2, except for the night when doing fault simulation tests, unplug WAN2 directly disconnected from the network, and the same is true for load balancing shutdown

[PhilipDAth]

Does WAN1 have DNS servers configured on it?

Are you using the MX for DNS or something else?

When you unplug WAN2, can you ping things by IP address?