"Hey, Jeff, hand me the documents!"

"Hey, Jeff, I'm leaving this line of code to you, I'll go to the bathroom."

Although the decoration of a Cisco Systems office is very simple, the desk and computer are both high-end configurations. The working environment of seven or eight people in a group is very comfortable for Jeff Bezos, who just found his first job.

Taste free black coffee, taste the free meals and fruits provided at noon, tap on your beloved code, and experience the mutual help and friendship between colleagues. This is simply paradise!

I have been working for a while. Due to my degree and excellent grades from Princeton University, Bezos has the honor to join the research and development of a new project in Cisco.

The switch, the name proposed by the Minister of Technology Leonardo Posack, was only when he talked about the specific functions of the instrument, Bezos keenly realized from his words that it did not seem to be Posack's own creativity. But since the leader did not explain anything, he certainly didn't care.

In fact, for Bezos, whether it is Cisco's current main product router or the so-called switch that Posack is going to start researching, they are all very magical and fresh things. In his four-year college career, Bezos studied computer science, but the products produced by the company he came to are something that has never been seen in the industry. It can be said that from all angles, he is absolutely motivated. Now that he has joined the switch research group, his work enthusiasm is beyond everyone!

However, both Bezos and his colleagues soon discovered that if they really want to make the planned switch, many manufacturing steps in the router field currently have to be modified.

As for the difference between routers and switches, what kind of technology does new products need to have? Posack provides information.

This is something that surprised Bezos and is also a very confusing thing. Because practice has proved that Posack didn't know much more than the rest of them, and everyone was standing on the same starting line. But he took out a very detailed document and key points of core cutting, and had a detailed explanation of what technology the switch needs to use and what technology is like, and even compared it with the router. This is incredible.

However, since the 80 employees of the entire company were recruited quickly in a few months, everyone did not ask Posack in detail for the time being.

To talk about what the switch should look like, you must first understand the characteristics of the router.

First of all, the router is a third-layer network device. The so-called third layer is actually a definition made by the file integrating the functions of the switch. The first-layer network device is a hub, belongs to the physical layer, and has no data processing capabilities. Its function is simply to transmit current to other ports. The second layer is the switch that everyone is currently studying. According to the concept, it should be able to distinguish the source address and the destination address, that is, the detailed information of the physical hardware address, and then establish a connection between any two ports. After that, it is the third layer, and the router is responsible for analyzing the addresses in the data.

Secondly, it can connect different types of networks, which is also the original intention of router development. Routers can connect different types of local area networks and wide area networks, such as Ethernet, network, network, token ring network, etc. For different types of networks, the format and size of the data unit frames they transmit are different, just like road transport loading goods in units of cars, while railway transport loading goods in units of car wagons. When changing from car transport to railway transport, the goods must be placed from cars to train wagons, and the same is true for data in the network. When data is transmitted from one type of network to another type of network, frame format conversion must be performed.

Finally, the router also has the function of path selection. Because in the network, there may be many paths from one node to another, and the router can choose a smooth and fast shortcut, greatly improving communication speed, reducing the communication load of the network system, and saving network system resources.

It can be said that after first learning what Cisco was producing, Bezos really couldn't be excited. As he saw from time to time, all the employees of the entire company were working hard every moment, and working overtime until 10 o'clock in the evening was completely normal.

Because the products they are producing are treasures that can lead to the great development of the global network!

As for the idea of ​​the switch

According to the idea provided by the file, there are two types of switches, namely, Ethernet switches located in the second layer network and node switches located in the third layer. They are used to extend LANs, and their working principle is relatively simple, which is to address according to the address and then select routes through the station table. As for the establishment and maintenance of station tables, they are all carried out by the switch, but they are also fully automatic.

Undoubtedly, this so-called Ethernet switch will be the company's most mainstream product. The difference between it and the so-called node switch is that, first, the node switch works on the wide area network, while the Ethernet switch works on the local area network. Second, the node switch is used to store and forward data packets, with a built-in forwarding table, and implement a routing protocol. It is a node in the network topology. The Ethernet switch is used to connect to the internal host of the LAN. There is no forwarding table inside, only the mapping table of the address and the host, and logically it is a bus structure.

All in all, it's very complicated.

This is Bezos’ first thought after reading the document.

And he is really curious. The company has not even appeared in the trial work yet, so why can Posack come up with such systematic information?

"Dongke, I'll go to the bathroom, don't stop me. I've been here for five hours."

From working in the middle of the night to early morning, the table was filled with disposable paper cups containing coffee. With two dark circles in my eyes, Bezos walked into the corridor with a yawn and ran into the bathroom.

Of course, Bezos doesn't understand the company's financial situation, but it can be seen that the profitability is really outstanding, at least it can be seen from the decoration of the bathroom. The bright copper faucet and the high-end brand's washbasin are still emitting a charming smell. If you add a light music, it will look like a high-end hotel.

This is by no means something that the Posacks could design, even Bezos could guess even if he was stupid. A marketing minister and a technical minister were typical pedantic figures. For the same amount of money, they would of course spend it on buying more equipment instead of doing small things like decorating the bathroom.

So, after thinking about the structure of the entire company, Bezos happily realized that it was probably the only chairman who had never appeared to think so, right?

By the way, what is the chairman’s name?

He was always busy developing new projects, and Bezos suddenly realized that he had forgotten such an important thing.

After going to the toilet, he started walking around the corridor. Indeed, it was around 10 am now, and it was the beginning of the day when work was just beginning. However, companies in the border areas could not be viewed by common sense. From the time they got off work last night until late at night, after a while, and from 5 am to the present, can't let people rest?

"Ah, I'm so tired. Is it better to have another drink after I go back?"

Even though he was a little confused when he was walking, Bezos didn't pay attention to where he was heading, thinking about another cup of coffee. When he finally came back to his senses, he realized that before he knew it, he had walked to the door of the printed office.

Well, the chairman is that the company is not too complicated yet, but the line of small words under the brand has also made many colleagues talk about it. They have been wondering all day long who the boss of their company is.

Under the golden big word "", the line of handwriting is very delicate, but the words are not polite at all.

“,b!”

When I saw it, the boss was very unique, no wonder he didn't go to work all day long.

"What's wrong with not going to work? Yes, who dares to say anything!"

As soon as Bezos finished speaking, the door suddenly opened.

Suddenly it opened.

It opens.

Opened.

It's right.

Bezos's cold sweat is really flowing down without any money

However, when he looked at the figure at the door, he was immediately stunned. It will be continued.

...
Chapter completed!