How Can The Router Get the Address Options?

There are 3 sources for Router address Information

1) When you configured you LAN you assigned an address to that LAN’s Gateway on a router -

This is a “Connected” Address

2) The Network Engineer (You) can manually enter an address Route you know about into a Router -

This is a “Static” Address

3) But the whole idea of a Router system is to have the Routers be able to calculate the best route automatically and for this we need ...

Dynamic Routing Protocols like: RIP, EIGRP and OSPF