Required quality hardware for successful Network Management

With the rapid development of computer and IT technology, computer networks have become a very popular topic, which is closely related to almost every employee of the company) plan, set up, run, upgrade, and maintain, and publish and run to the enterprise website (including web, ftp, Email, and other services; from network security management to database management, storage management, network and personnel management, from network equipment to server and workstation (PC) operation management; from the production of Network cables to the installation of operating systems (servers and PCs), it may be related to the work of our network administrators.
　　
Therefore, network administrators (network administrators) work tasks: Fully managing networks is the prerequisite and guarantee for efficient network operation. Management Objects refer to not only the smooth network links, but also the normal operation of servers and other hardware factors, it also includes software factors such as network applications and data transfer. network managers must always pay attention to the network operation of the enterprise, care about the enterprise's network applications, and ensure that the network can meet the enterprise's needs at any time, keep up with and guide enterprise development. Next we will discuss with you the "hardware" essential for successful network administrators.
　　
As a network administrator, there are a lot of cases to do it yourself. Not only do you need to build your own network and network services, but you must also set the vswitch and vro. Although cabling works are usually implemented by network companies, some network jumpers and some modules are required because of changes in new devices or network topologies, even some simple integrated wiring. In addition, the upgrade of computer hardware and network equipment (such as adding hard disks, memory and CPU) often requires the Administrator to do it himself. Installing the operating system, application software, and hardware drivers is a required course for network administrators. Therefore, the network administrator must have a pair of smart hands with strong hands-on capabilities.
　　
Network administrators must be very keen to observe, especially when debugging programs or software and hardware faults occur. Error Information, Computer tweets, indicator flashing status, display color, and so on, will prompt from one side the possible cause of failure. Observe the fault more carefully. The more comprehensive, the more opportunities for troubleshooting. In addition, through timely observation, you can also promptly eliminate potential network risks.
　　
Network administrators have almost daily access to network devices, servers, and other hardware. Therefore, in addition to having some self-learning ability and updating their own knowledge structure, they also need to have knowledge about network hardware. The following lists common hardware knowledge.
　　
1. servers and workstations
　　
A server is the backbone of the network and the core of information technology. A server is a high-performance computer, which consists of a CPU (central processor), memory, hard disk, and various bus, it can provide various shared services (networks, Web applications, databases, files, printing, etc.) and other high-performance applications, its high performance is mainly reflected in the high-speed computing capability, long-time reliable operation, and powerful external data throughput capabilities.
　　
At present, foreign servers include IBM, HP, SUN and DELL, and domestic servers include inspur, Lenovo, sugon and other brands.
　　
Workstation is based on personal computers and distributed network computing. It is mainly used in specialized application fields. Based on different software and hardware platforms, workstations are generally divided into UNIX System workstations based on the reduced command system architecture and Windows and Intel PC workstations.
　　
UNIX workstation is a high-performance professional workstation with a powerful processor (previously used mostly with a RISC chip) and optimized memory, I/O (input/output), graphics subsystem, using proprietary hardware systems such as Alpha, MIPS, and Power, memory, and graphics, proprietary UNIX operating systems are incompatible with each other for applications on specific hardware platforms.
　　
PC workstations are based on high-performance X86 processors. They use stable Windows NT, WINDOWS, Windows XP, and other operating systems and use graphics systems that comply with professional graphics standards (OpenGL, coupled with high-performance storage, I/O (input/output), network and other subsystems, to meet the requirements of professional software operation; wks Based on NT, WIN2000, and XP use standard and open system platforms to minimize cost of ownership.
　　
At present, many vendors have launched workstations suitable for different user groups, such as IBM, DELL, and HP.
　　
The installation, configuration, operation and maintenance of servers and workstation systems are also an important part of the success of network administrators.
　　
2. vro
　　
A vro is a key device connecting networks. As a hub connecting different networks, the vro system forms the main node of the international Internet based on TCP/IP. You can also say that, A vro builds an Internet skeleton. Its processing speed and reliability directly affect the quality of network interconnection.
　　
There are two ways to configure a vro: one is to configure the port through the vro, and the other is to use Telnet commands to configure the vrotelnet. However, the premise of adopting the second method is that the user has correctly configured the IP addresses of each router interface. Therefore, the first method is more universal.
　　
Currently, vro manufacturers, including CISCO and Nortel Networks, are abroad. domestic manufacturers include Huawei. As a network manager, you must be able to master the installation and debugging of routers from various manufacturers. This is one of the essential qualities for successful network administrators.
　　
3. vswitches and hubs)
　　
The English name of a vswitch is "Switch". It is an upgraded product of a hub. In terms of appearance, it is basically no different from a hub. It is a cube with multiple ports. A vswitch is a technology collectively referred to as a technology that sends the information to be transmitted manually or automatically by devices to a route that meets the requirements. The main functions of a vswitch include physical addressing, network topology, error verification, frame sequence, and traffic control. At present, some high-end switches also have some new functions, such as VLAN (Virtual LAN) support, link aggregation support, and even some also have routing and firewall functions.
　　
A vswitch is a network device that can encapsulate and forward data packets based on MAC address recognition. At present, the mainstream switch manufacturers to foreign CISCO (CISCO), 3COM, annett as the representative, the main domestic Huawei, D-LINK and so on.
　　
The Hub is called "Hub" in English. The main function of the Hub is to rebuild and resize the received signals to expand the network transmission distance, at the same time, all nodes are concentrated on the nodes centered on it. A hub is a hardware-only underlying device and basically does not have the "smart memory" and "Learning" capabilities similar to switches. It does not have the MAC address table of the vswitch, so it does not send data in a targeted manner, but uses broadcast to send data.
　　
Mastering the installation and configuration of switches and daily troubleshooting of switch faults is also a must for successful network administrators.
　　
4. Firewall and Intrusion Detection System (IDS)
　　
The English name of the FireWall is "FireWall", which is currently the most important network protection device. From a professional perspective, a firewall is a set of components that implement access control between two or more networks. A firewall can isolate an enterprise LAN from the Internet or other external networks, and restrict mutual access between networks to protect internal networks.
　　
At present, almost half of the domestic firewall market is owned by foreign brands. The advantage of foreign brands is that their technology and popularity are higher than those of domestic products. Domestic Firewall vendors have a better understanding of domestic users and have more advantages in terms of price. Among the Firewall Products, major foreign vendors are Cisco, CheckPoint, and NetScreen. Among them, major domestic vendors are Neusoft, Tian Rongxin, Lenovo, and founder. They all provide different levels of Firewall Products.
　　
Intrusion Detection System (IDS ). Professionally, it monitors the running status of networks and systems according to certain security policies, and tries its best to discover various attack attempts, attack behaviors, or attack results, to ensure the confidentiality, integrity and availability of network system resources.
　　
In essence, the intrusion detection system is a typical "Snoop device ". It does not connect to multiple physical network segments (usually only one listening port) and does not need to forward any traffic. Instead, it only needs to passively and silently collect packets it cares about on the network.
　　
As an important part of network security, firewalls and IDS are the most commonly used security devices, therefore, mastering the installation, configuration, and application of firewalls and IDS is one of the essential qualities for successful network administrators.
　　
5. Other hardware devices
　　
In addition to the most important transmission media, such as twisted pair wires and optical fiber cables, many cabling devices are in use. Commonly used include RJ45 plug, information socket, distribution frame, optical fiber connector, wire stripping clamp, wire hitting clamp, network clamp, network cable module and wire measuring instrument, etc. The network manager must learn to operate and use it skillfully.
　　
In network storage, a disk array is a system that combines several hard disk drives according to certain requirements. The entire disk array is managed by the array controller. A tape library is a tape-based backup system like an automatic tape drive. It consists of multiple drives, multiple slots, and robotic arm, the mechanical arm can automatically disassemble and load the tape. It provides the same basic automatic backup and data recovery functions, but also has more advanced technical features. It is also essential for network administrators to master the installation and operation of network storage devices.
　　
When constructing a wireless LAN, install, debug, and use wireless LAN products such as routers, wireless network adapters, wireless network adapters, and antennas.
　　
In short, as a successful network manager, you must have a certain understanding of all kinds of network devices, and take the use of each network product carefully, ensure the normal and stable operation of the equipment in a certain network environment. Therefore, after studying hard, be good at practice, and be diligent in summing up, the network administrator must have a "wide" and "specialized" quality, only in this way can a Network Administrator be truly successful.