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how is the IP of the subnet gateway and IP Address Router Interface related?


In the LAB_10.1, I do not understand at all, the relationship between the Gateway of the subnet and the IP of the router interface. If you do not assign an IP to the router interface it will take the gateway of the subnet (, in this case, the Gateway of the instances will be IP, all good. But when an IP is assigned to the router interface, what function does it have? in this exercise, IP is assigned. in which cases should I assign an IP to the router interface?


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