I am more interesting today. I feel that the basic skill is not solid.
A new machine is added in the network. After the IP configuration is completed, after the test, some machines in the network can be accessed. However, there is a server, always can't connect. Changed several configurations, there is no effect.
Later, I came to a big. (The network is originally paired by several people.) I have seen a few eyes, it is estimated that IP conflicts. After the changes, the problem is solved.
(Estimate) It turned out that the server installed a dual network card. They belong to different network segments, respectively. There is no link between the two network segments (routing). So, the new machine can join your own network segment, there is no error message. But that server is accessible to another network segment. Therefore, there is a conflict with him.
Knowledge, experience has blind spots.
