In this GNS3 lab we will learn how to redistribute from EIGRP into OSPF and vice versa. Below is the topology used in this lab:
First we assign IP addresses to all interfaces on the routers. Notice the 4th octet of the IP address of each router has the same value of the name of that router (for example R2 has 2 interfaces 12.12.12.2 & 23.23.23.2; R3 has 2 interfaces 23.23.23.3 & 34.34.34.3…)
In this tutorial we will connect two routers via static route with GNS3.
Static route and Dynamic route
Static route tells the device exactly where to send traffic, no matter what. Static route is often used when your network has only a few routers or there is only one route from a source to a destination. Dynamic routes, on the other hand, use a routing protocol to determine the best path and the routes can be changed depending on specific parameters (like bandwidth, delay, cost…). With dynamic routes, routers can communicate with each other to exchange routing information. In ROUTE 642-902 you will learn about dynamic routing protocols such as OSPF, EIGRP and BGP (RIP is also a dynamic routing protocol but it is not mentioned in ROUTE).
The simple syntax of static route:
ip route <destination><subnet mask><next hop IP address or outbound interface>
Now we consider a real-world example of static routing. Suppose that your company has 2 branches located in New York and Chicago. As the administrator of the network, you are tasked to connect them so that employees in the two LANs can communicate with each other. After careful consideration you decided to connect them via static route.
In this tutorial we will use GNS3 to do a very basic task to secure your routers – apply a password so that users will be asked for this password when try to enter the privileged mode. For example:
Router>enable
Password: ******* (enter that password here)
Router# (this is the privileged mode)
Now let’s start!
First launch the GNS3, for this tutorial I use the IOS c2600-bin-mz.123-6f.bin but this is a very fundamental lab so you can use any IOS you have.
1. Drag the Router c2600 the place it onto the right-side box,
2. Click the Start button (the green triangle button)
3. Click the Telnet to all IOS button (the black button) to open the Telnet command line interface (CLI).
