Why is the Internet old and disconnected with a switch?

The switch may be too hot or aging. Take a look at it with a new one.

You first check whether the crystal plug of the network cable is loose, click on the computer, then open the device manager, find the network adapter point to deactivate, and then start it, maybe it's fine. If not, don't be angry! Sit down, have a cup of tea, and cheer up in the hot summer, the temperature is very high, don't you feel hot?

You put me here and don't care about us; The temperature of my chip is above 40 degrees, the temperature of the hard disk is higher than 45 degrees, and the temperature of the network card is more than 80 degrees; Can you work in such an environment? You still have a fan or an air conditioner or something, do you mind my business? Our Equipment (Device means:

Cats, routers, network switches, Hubble, computers, etc.) too, feel hot and can't work for you anymore; You can't go to the Internet, you look for masters in the north and south, don't cool me down, you can't find anyone (or replace cats, routers, etc.), because our brothers have the same temper, if you don't cool us down, we will strike! You may wish to take a look at the following methods, and use measures that you feel are acceptable to reduce the temperature of my (equipment) working environment, I promise: continue to serve your elderly.

A: Users who often surf the Internet for up to half a year should open the shell of the device after the power is off and clean up the dust inside the device. b: Place the equipment in a safe place for people, open the lid of the equipment, use air convection to strengthen contact with the air, and naturally dissipate heat;

c: Install a micro fan to the equipment to increase the convection of air and force heat dissipation;

D: If you are doing IT, I suggest that you install a heat sink on the heating part of the device after disconnecting the power supply.

e: After the equipment is disconnected from the power supply, use a 3mm drill bit to drill many holes up and down the equipment to strengthen the air convection flow and improve the heat dissipation conditions;

f: To ventilate and dry the equipment, it is best to make an insulated heat dissipation bracket (there are also notebooks on the market) to support the equipment for natural heat dissipation;

H: Let the adsl cat sync first: power off the cat and restart it.

i: The software settings are reasonable, so that 3 do not install: do not install informal software, do not install P2P (occupy resources) software, and do not install infrequently used software.

Turn off all unnecessary network connections, such as Thunderbolt BT Donkey, etc.;

j: Optimize the network Personally, it is recommended to use some gadgets such as Super Rabbit, Optimizer or 360, etc.K: The computer should have at least one valid and genuine antivirus software installed l:

NIC problem: The NIC has the appropriate bandwidth and works stably. As long as you take care of our brothers (routers, cats, hubble, network switches and their computers), our brothers promise to really do it:

You respect me, I respect you" for your faithful service. Otherwise, ride a donkey and read the record book--- let's see!

Thank you for adopting my answer!

Thank you: friend!

Hardware breaks down or power supply problems will occur.

The source causes the switch to crash, and the specific troubleshooting solution is as follows:

Users who often surf the Internet for up to half a year should open the shell of the device after the power is off and clean up the dust inside the device. b: Place the equipment in a safe place for people, open the lid of the equipment, use air convection to strengthen contact with the air, and naturally dissipate heat;

Install a micro fan to increase the convection of air and force heat dissipation.

If you are doing IT, I suggest that you install a heat sink on the heat-generating part of the device after disconnecting the power supply.

After the equipment is disconnected, use a 3mm drill bit to drill many holes up and down the equipment to strengthen the air convection flow and improve the heat dissipation conditions.

As far as the device is ventilated and dry, it is best to make an insulated heat dissipation bracket (there are also laptops on the market) to support the device and dissipate it naturally.

Timely removal of garbage fragments and IE caches generated by Internet surfing, and regular organization and operation of the C disk, can appropriately improve the running speed.

Let the adsl cat sync first: power off the cat and restart it.

1 is a broadcast storm in the network, resulting in a large amount of data**. The switch broadcasts packets, causing normal data to fail. Thus crashing.

2 is that the normal traffic in the network is large, and the processing performance of the switch is not good, which is not enough, resulting in a crash, that is, a small horse-drawn cart.

Voltages broadcast storms can cause crashes.

According to you, the exchange should be completely accessible to the Internet and will not be affected. At least the direct route should be able to get on.

I'll tell you what I think:

1) First of all, the problem of frequent disconnection, the current processing capacity of this gateway is low, the number of users is large, NAT processing will inevitably be slow or disconnected, generally such a home-level router can only bring about 50 machines.

2) Someone is trying to occupy it, but in fact, some machines are poisoned and always want to pretend to be a gateway, and there may be more than one. The solution that pretends to be a gateway is to cut the network part by part, until the machine is finally found; It's better to look at the MAC address on the route and switch, and then find it out.

Possible workaround:

1) Change to a more advanced enterprise-level gateway, but ** at least more than 1,000 yuan. Or go to a nearby computer city to buy, and say that you must be able to bring 200 machines, and you can return them if you can't bring them.

2) If possible, the switch should set up user isolation, that is, each port cannot access each other, and can only access the router of the upstream port. In this way, a large number of problems can be shielded, such as DHCP impersonation, gateway impersonation, and so on. However, it must be supported by the switch model.

3) Bind the MAC address on the switch, bind the IP of your router to the MAC address, and do not let others impersonate. This should do.

4) Apply for two accounts from the telecom and use two home-level routers to separate the users, one to half of the users.

This is a more systematic problem, and it will be a challenge for you, so go ahead and keep trying. Remember (1) don't change the configuration casually before you figure it out, (2) make a backup before changing the configuration for recovery, (3) put the changes in the evening, prepare the test conditions, and send a small announcement to let everyone know (4) the network changes that you are not sure about should be slow, and you can always achieve perfection by changing a little first and then a little more.

Isn't it okay to revert to the original state of treatment now?

What I need to know is how many computers you have that need to be connected to the Internet. Frequent disconnections are a problem with the equipment. Problems with routing.

Take a look at your router model. I can tell you unequivocally that frequent dropouts are a routing problem. It's a home type, and it doesn't support your big network at all.

You have problems with both of these connections:

Figure 1 is the switch series connection, the disadvantage of this is that the signal will take more time to address the whole network, the data carrying of the network within a certain range, the exchange of data will be slow, and there will be a network storm in severe cases.

Figure 2: If you see that you have left out a part of the switch, all the data is directly connected to the router, and it is easy to get data jams.

Suggestion: Each line of the router is connected to the switch separately The switch is in the horizontal switching If the switch is Layer 2 switching, you can divide the VLAN and limit the speed of the port, otherwise your route will not be able to carry so many PCs to surf the Internet at the same time.

There is no problem with the first connection, but it is not clear why you changed the router IP, so that the gateway of the PC under you will definitely not be able to access the network.

I can only tell you that your thinking about dealing with problems has not been extended, and it is also related to your work experience. In fact, more than 60% of this LAN problem is caused by the switching network layer, that is, the inherent protocol vulnerability of Ethernet.

1.Whether the outside line is stable 2Whether anyone is using illegal software 3Is there a loop 4 for the intranet wiringWhether the line is old or too long 5Whether the network equipment is broken or aging, especially cats, thunderstorms in the south are easy to break...

And the crystal head mentioned upstairs also checks it! Finally, a LAN virus attack will also cause disconnection!

The first 5 points are very easy to check, and you can test them one by one, but if there is really a virus attack on the local area network, this is very troublesome, and it is not something that antivirus software and firewalls can completely solve.

That should be the problem of your internal LAN, you can check the problem of the hardware device, followed by the intranet attack, ARP you should understand, although this thing can be seen everywhere, but it is not easy for you to completely solve it, as the saying goes, lice are not itchy, and now many companies and enterprises are listed as normal! Hehe··· However, there is now a device called immunity wall that can solve this problem, although it is a little more expensive, but the most important thing is to solve the problem.