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Network is an important part of data center migration, especially cloud computing, big data, virtualization and other new technologies, and its technical basis is related to the network. It can be said that without the network, these technologies can not be realized. For a data center, if the network has an impact on all applications, the network is critical.

Since the network is so important to the data center, to subordinate to heavily guarded, so the data center has its own network operation and maintenance department, the Department of the center for the entire data network. Including but not limited to: network change, upgrade, expansion, equipment assembly, new technology, fault analysis and processing, network operation and maintenance department is basically the most busy departments throughout the data center, server, storage and other parts like change and adjustment, the network department is to accompany, because no other part of the normal operation of the network is out of the question, it also makes maintenance personnel engaged in coordination work of various complex.
So, in order to do the maintenance work, the hand must have some unique weapon, as the saying goes: "one can't make bricks without straw", the operation and maintenance work to do a good job, also must rely on some tools to help analyze and solve problems. Like many IT personnel, the computer is an essential tool for network operation and maintenance personnel, open the operation and maintenance personnel of the computer, will find some of the high frequency of use of software, we call it artifact. Below, to introduce some network operation and maintenance of the artifact, is the network operation and maintenance of the necessary tools for personnel use.
SecureCRT
SecureCRT is a terminal emulator supports SSH, Telnet protocol, produced by VanDyke, can be used in the Windows environment, through the SecureCRT login UNIX or Linux server host, also can log on to the network equipment, is a small software login device used most widely, especially on network equipment, almost every network engineer the computer has installed the software on the network login, also can easily find the cracked version of SecureCRT software, free installation and use. In fact, the software that supports SSH and Telnet protocol login is very much, and the login protocol itself is not complicated. Anyone can be a login software, but SecureCRT is the most popular one.
In fact, SecureCRT not only can also provide login equipment, record the operation log, edit script and adjust the color, interface and support simultaneously on multiple devices, printing function, variable screen size, use of shortcut keys and so on a series of rich functions, can often use in management of network equipment, provides a lot of convenience for operation and maintenance the work, so loved by the people, gradually became a log artifact, although there is not much technical content, but it is the most widely used, the basic network engineer essential staff.
Wireshark
Wireshark is a very popular network packet analysis software, the function is very powerful, you can intercept a variety of network packets, display network packets details. Wireshark, the predecessor of ethereal, was written by Gerald Combs and released in 1998 with GPL open source license. Although Wireshark is open source software that can run on Windows and MacOS, but it does not mean that there is not enough security, a network security tool list, the list of foreign (http://sectools.org/) including 125 security tools, which ranked the top is Wireshark, so Wireshark can be assured.
The network administrator can use Wireshark to check for network problems, network engineer will use Wireshark to capture, analyze their test software in Socket programming engineers will use Wireshark to debug. In a word, with the network related things, may be used for Wireshark.Wireshark filter with strong functions, such as database system, it can catch all SQL statements, in order to analyze and test processes, business processes, data, and other aspects of the pressure test.
However, for security reasons, Wireshark can only view the packets, but not to change the contents of the packet or send the packet, if the need should be considered with the Sniffer tool, Sniffer has both the analysis and the function of sending. In addition, Wireshark can obtain HTTP, also can obtain HTTPS, but can not decrypt HTTPS, in Wireshark can not understand the content of HTTPS. Wireshark is a very powerful tool, there are many people also wrote the use of methods, Wireshark functions are introduced in detail, and in the network operation and maintenance process, how to use these functions to analyze problems.