High-speed offloading of IP networks, optical networks, and Rail Transit

High-speed offloading of IP networks, optical networks, and Rail Transit
Three o'clock AM, sleep in the middle of the night, suddenly heard the left and right ears buzz, the tatami pad under the sound of the sand, thought in a dream, but woke up, found that did not see anything, still in the night, so I confirmed that this was not a dream. So when the light was turned on, I found a cockroach lying on the mat, but the two mosquitoes were unknown. When I fell asleep next to me, I grabbed the cockroach and ran to the bathroom for a good time. Then I wanted to continue my dream of incomplete appointments, but I couldn't sleep any more.
The thought of taking the 528 bus to pass through the hateful hutai road in a short time is very uncomfortable. Every day, this road is congested, there are many traffic lights, and there are many bus stops. My So-Called congestion prediction and congestion avoidance principles are completely ineffective. What is the actual congestion on this road. I don't know why I gave up taking the subway. It may be because of congestion, bicycles, batteries, and cars. Self-routing tools are out of consideration, because driving them will take up a short time. In any case, you can't sleep, so let's talk about the high-speed network uninstallation.
A few years ago, I had an idea: why does a train stop? For customers? So why do passengers who do not get off the bus have to pay time for the passengers who get off the bus? Of course, railway carriers will not consider this because they think this is an inherent latency, just as the inherent latency of an IP packet entering the router query forwarding table. However, people may have some different ideas about freight transportation. A freight train drives a freight station and the cargo warehouse door opens, when the vehicle was not stopped, the staff threw the goods to be unloaded at the station one by one. Are you afraid that the goods will break down? Pad a spring mat. In the same example, you can consider airdrops and airborne flights, or bomber bombs. Have you ever seen an airplane stop before throwing things or throwing people? Aren't all load unload while the speed is maintained?
In a low-speed environment such as freight transportation and ordinary passenger transportation, the inherent delay cost caused by stop is not very high, but it is completely different in high-speed or even ultra-high-speed situations. For passenger transportation, of course, people cannot say that they will not stop dropping people to get off the bus, just like throwing goods. There is a spring mat ..... however, I think this is a technical problem that can be completely solved. First, the direct idea is that the people who get off the bus jumped down a little in front of the station and finally fell to death. Then, in order not to die, some things were laid down and the result was still disabled. Finally, considering that all of the following were made completely soft, the results were safe, but still frightened .... isn't that a little technical solution? People or those who get off the bus are still jumping down. The difference is the result.
Isn't it better to take the process of "the person who wants to get off the bus jumps to the station with a soft air cushion?
You can imagine a closed container space. The person who is about to get off the vehicle enters the container in advance, and the train unmounts the container before arriving at the station. The train itself does not slow down. As for how the container stops or where it stops, it is entirely its own business. Didn't you find that this is a typical example of full decoupling? In movies, we always see a fight on a train. Generally, there is a bomb in the first half of a train. The main character finally kills the villain or traps the villain in the car where the bomb is placed, then, turn a handle to separate the second half of the train from the first half of the train. The first half of the train continues at a constant speed. The second half of the train stops due to friction, then, with a bang, the film is almost over. Isn't this a typical example of High-Speed unload? Of course, except for the last bang.
You can hold the containers on each carriage next to the high-speed train. There will be special off-rail and On-Rail trains near the station. Then, when the train arrives at the Station X meters ago, the container is detached from the lower passenger orbit. At this time, the speed of the lower passenger container is still the same as that of the train because of inertia. However, after that, it can take brake measures, this "small carriage" stops completely at the station. Passengers do not feel any discomfort.
The same principle applies to passengers. These containers are used to automatically speed up a railway station to the same speed as a high-speed train, and then hook the passengers on the train to enter the train carriage. This is really a stepless speed change! Of course, the number of X meters mentioned above and the time when the container is started must be carefully calculated. I just want to give a little idea.
Passengers who do not get off the bus will no longer be disturbed by the passengers who get off the bus. I think this is a high-speed train! Real high-speed trains! If I want to go from Shanghai to Shenzhen, the time I spend is almost the length of the high-speed rail track from Shanghai to Shenzhen divided by the speed of the high-speed rail, this non-stop design allows the high-speed trains to travel at the same speed as much as possible without being affected by the station. It will only be subject to weather, traffic control and other force majeure factors.

But what about the IP network? The current technology is difficult!
However, the optical network detachment technology does exist. The simplest example will be clear. Optical Network multiplexing refers to wavelength division multiplexing. Therefore, wavelength division is used to detach optical networks. It is a physical process to separate a specific wavelength from a superimposed wave, this does not require latency at all! Optical splitter and Optical Switch use this principle.
However, for IP networks, this type of electronic digital network is very difficult. Even Cisco's CEF technology does not affect forwarding traffic when distinguishing local traffic from forwarding traffic. routers or switches need to perform packet inspection one by one, to match a stream or another policy. What high-end routers can do is to make the detection process as fast as possible.
What are such complaints ?! Isn't it because of the IP network! As I mentioned earlier, separating one line in a high-speed environment is the easiest way to do it at the physical layer. Why do we need to do it at the IP layer, the IP layer brings complexity and control. In the core transmission network, the optical fiber does not run an IP packet. It is more like a stream of the physical layer after the IP packet is modulated. In essence, all kinds of xDM use this separation and superposition technology. Within the chip, on the motherboard, on the access network, on the transmission network, you will find many musters, demuters, splitters, and other things, these things are similar to the non-stop unloading of rail transit.
05:40, how many people are dreaming at this point in time ....

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