Using GNS3 in Windows 7 to simulate a router PING an external network operation step

1. Experiment topology

2. Preparations

Add the loopback interface to go to computer management> Device Management> add outdated hardware

Go to the add hardware wizard and click next.

Select the hardware (advanced) (M) that I manually select from the list and click next.

Select a network adapter and click next.

Select Microsoft Loopback Adapter and click Next

Click Next

Enter the network connection and you can see

At this time, the loopback interface I added is local connection 2. Because the wireless network adapter is used to access the internet, I set the sharing on the wireless network card. Finally, the loopback interface will get an IP address: 192.168.137.1/24.

3. Configuration test

Cloud Cloud1 bridges the new loopback interface, that is, local connection 2. Configure the IP address 192.168.137.2 on R1 and configure the default gateway to run 192.168.137.1.

The configuration and test results are shown in the following figure: