Static routing occurs when you manually add routes in each router’s routing table. There are pros and cons to static routing, but that’s true for all routing processes.
Static routing has the following benefits:
- There is no overhead on the router CPU, which means you could possibly buy a cheaper router than you would use if you were using dynamic routing.
- There is no bandwidth usage between routers, which means you could possibly savemoney on WAN links.
It adds security because the administrator can choose to allow routing access to certain networks only.
Static routing has the following disadvantages:
- The administrator must really understand the internetwork and how each router is connected in order to configure routes correctly.
- If a network is added to the internetwork, the administrator has to add a route to it on all routers by hand.
- It’s not feasible in large networks because maintaining it would be a full-time job in itself.
The command syntax you use to add a static route to a routing table:
IP ROUTE [destination network] [mask] [next-hop_address or exit interface]
Example of Static Routing