Review
- Switches: Forward traffic within LANs (Local Area Networks).
- Routers: Forward traffic between LANs.
WAN (Wide Area Network)
A WAN is a network spread over a large geographic area, connecting multiple LANs.
Static Routes
Static routes are manually configured routes that a router uses to forward traffic to a specific destination. These routes do not change unless manually modified by a network administrator.
Static Route Configuration
To configure a static route, you specify the destination network, the subnet mask, and the next-hop IP address or exit interface.
- Basic Syntax:
Router(config)# ip route [destination network] [subnet mask] [next-hop IP/exit interface]
Static Route with Exit-Interface
When configuring a static route, you can specify the exit interface instead of a next-hop IP address. This tells the router to send packets directly out of the specified interface.
Default Route
A default route is a catch-all route used by the router when no other specific route matches the destination IP address. It’s typically used to direct traffic towards a gateway or the internet.
- Default Route Syntax:
Router(config)# ip route 0.0.0.0 0.0.0.0 [next-hop IP/exit interface]
