ROS1 is the Master, ROS2 is the Slave, but when connected the lines, access is switch often. like access http://1.2.3.4, some time I got ROS1, some times I got ROS2.
So my questions:
1, WAN port must 2 diffenrent IP? like ROS1 1.2.3.4, ROS2 1.2.3.5?
2,If WAN port is same, how to configure VRRP to work normal?
My setup at work has ISP routers above me running HSRP. The provider gives us a /29 for the “in between” network. So for example the default gateway we route to is 10.250.0.1 (virtual), and the ISPs HSRP physical addresses are 10.250.0.2 and 10.250.0.3. They provide the layer 2 connectivity to make HSRP work. We have VRRP set up with 10.250.0.4 as the virtual, and 10.250.0.5 and 6 as the physical addresses. They route some static routes down to us via that virtual address, 10.250.0.4
Is that what they are doing?
If they are expecting you to use the same gateway address outbound, you probably should shut the outbound interface on the backup router, and bring it online when the primary goes down or something similar.
VRRP needs testing to get it right. If you don’t like the MikroTik documentation, read something else. It all works the same give or take. Each implementation might have a few extras that others don’t have, be careful of that.