I have 2 internet routers on site by a ISP, I have noticed that the main interfaces on both routers are in the same subnet, as per normal, and there is a group with a virtual address in this subnet as I would expect. However there is another group configured on the same interface where the standby IP address is not in the same subnet as the real address! , Will this really work?
You may use sub interface to achieve the same result... as thre are couple of limitations while particip
ating in dynamic routing protocol like OSPF.
If you are not planning to use OSPF in near future then you can continue with the configuration currently available...