Communication between linux systems on two virtual machines

Communication between linux systems on the two virtual machines needs to be tested. Therefore, one virtual machine is installed on each of the two computers and the linux system is installed. Virtual Machine A is installed with the oracle Server, virtual machine B is installed with the oracle client, but virtual machine B cannot ping virtual machine A, or ping... communication between linux systems on the two virtual machines needs to be tested. Therefore, one virtual machine is installed on each of the two computers and the linux system is installed. Virtual Machine A is installed with the oracle server and virtual machine B is installed with the oracle client, but virtual machine B cannot ping virtual machine A or host, however, you can ping host B. (communication between the VM and the host is in the bridging mode. the specific setting method is also shown in logs on this blog. it is not cumbersome here, so it is important ). The current situation is: of course, their IP addresses are all set in the same LAN, so this is equivalent to four computers in the same LAN. In addition, four computer firewalls are also disabled for host www.2cto.com A <----- intercommunication -----> vm B <----- intercommunication -----> host B A <----- mutual access -----> Virtual Machine B, this is also the case with host B and virtual machine A. since the host can be pinged but the host on one side cannot be pinged with the virtual machine on the other, it means that there is no problem with the host communication network, so the problem should be located on the virtual machine, and a lot of information has been found on the Internet, but those answers are all nonsense about copying and pasting posts, which does not work at all. this is a terrible waste of time. As a result, I opened the VM setting button and checked whether to set virtualization or something. Finally, I found this problem :. This is the virtual network computer connection settings. you can check this option and read its comments to understand its role. Finally, the client can access the server. I hope this will help you!