Example: difficulties in solving simple problems (1)

Bkjia.com exclusive Article: as a network engineer, not just sitting in front of a computer, using remote control, on a switch, router, or security device, enter and execute some commands to complete all the work. Sometimes the network manager is working more physically, and it is common to move things up and down. Here is an example to show you the most authentic aspect of the network administrator's work:

I. Problems to be Solved

1 shown, 101 and 102 two offices, 101 office wall there is an information outlet, the information outlet there is a network port and a telephone port, models respectively when RJ-45 and RJ-11, connect the network cable and the telephone line respectively. At present, most offices, including the home Internet, use such information outlets. However, if you use ADSL to access the Internet in your home, you generally use a telephone line to connect to the telephone port of the information outlet. the other end of the telephone line is connected to the ADSL cat, then a network cable is pulled from the Internet port of the ADSL cat and connected to the computer at home to access the Internet.

Figure 1 network problems to be resolved

However, in the organization, the Internet is generally accessed through a LAN. The use of information Socket network port, one end of a network cable to the computer Nic, the other end of the Information socket RJ-45 port can be connected to the Internet.

As shown in figure 1, there is an information outlet on the wall of the 101 office, allowing users to access the Internet normally. However, there is no information outlet on the wall of the 102 office, so 102 office users cannot access the Internet. This is mainly because there was an information outlet on the wall of 102 office, which could access the Internet through the network port of the information outlet. However, the 102 office had undergone a thorough internal decoration recently, during the decoration, the construction team may want to cut corners. Maybe they do not have any network knowledge. After the decoration, they did not reserve any information outlets on the wall that can access the Internet, in addition, the original network cable and information outlet ports are pasted with cement.

In this way, it brings great convenience to the decoration staff, but it brings a Disaster Tolerance to our network maintenance staff. Currently, users in the 102 office need to access the Internet. What do you do?

Ii. several possible solutions to the problem

In this case, we immediately thought of the following three solutions:

1. solution 1: since there is no information outlet for Internet access in the 102 office, re-wiring and pull a network cable from the distribution frame of the office room to the 102 office.

However, this solution was quickly rejected. For an office that has already been renovated, if you want to re-wiring it, it is equivalent to a person performing cosmetic surgery, not doing well, it's just as painful to have another plastic surgery! Therefore, you can only find other methods. This solution is not feasible.

2. solution 2: re-wiring in solution 1 is troublesome, but there is a wall between 101 and 102 offices. Now, you can create a hole on the wall. The hole does not need to be too large. You only need to pass through a network cable.

In this way, the 102 office pulls a network cable from the 101 Office through a small hole in the wall. The network cable is connected to an information outlet on the 101 office wall, and the other is connected to the 102 office, connect to your computer to access the Internet.

However, this solution was quickly rejected, because 102 office was decorated with a solid plank on the wall next to 101 office, which was expensive, it is also very beautiful. They are not allowed to drill holes on the wall, thus affecting the overall appearance.

3. solution 3: during the renovation of the 102 office, they reserved a telephone information outlet, that is, a telephone port, which allows users to use an ADSL cat over a telephone line, can I access the Internet.

However, our company uses a small phone number, which is different from the telephone system used by the family. In addition, users access the Internet through LAN. The network adapter of the user's computer is connected to the distribution frame through a network cable, and then to the switch of the data center through the distribution frame, connect to the Internet through the UPLINK port of the vswitch. You have never used ADSL to access the Internet.

In addition, if you use ADSL to access the Internet, the network speed may be slow, and the user will not be satisfied. Therefore, this method cannot be used.