How to interconnect two computers with one virtual machine LINUX

How to interconnect two computers with one virtual machine LINUX-general Linux technology-Linux technology and application information. For more information, see the following. 1. Two Computers
2. A Virtual Machine LINUX
3. Note that you need to start the NIC.
4. root linux
5. cd/etc/sysconfig/network-sprints/go to the location where the file is located.
Ls View
Vi eth0 edit eth0
And then edit it to the desired IP address, gateway, and so on.
Esc ---: Exit wq
6. Configure the other computer with the same configuration and the same network segment.
7. OK. Both the big computer and virtual machine are allocated with a network segment. can ping the virtual machine?

Problem:

What if I cannot ping my computer if something goes wrong?
Enable the two LINUX virtual machines in one computer, and then set them as follows; otherwise, set a virtual machine as a host, a virtual machine as a bridge, and an external computer as a router. OK, done.