SSH Timeout - Write failed: Broken pipe?

The problem occurred in linux, and each time ssh connection can only last roughly two minutes once the connection is idle. I followed the suggestion provided in the following link, and the problem is solved. https://bbs.archlinux.org/viewtopic.php?id=97003 I added the line ServerAliveInterval 30 in the ssh _config file, which is located under the directory of /etc/ssh.