The laptop is connected to a Gigabit switch and does not get through 30

The network cable must be connected in 100m mode to ensure that line 1236 is unobstructed, and in 1000m mode it must be fully connected to 8 lines. When we encounter damage in the line, we can reduce 1000m to 100m for use, but we must ensure that the 1236 numbered line is unobstructed. The number 1236 here is the number of the copper plate of the network card contact, the simple point is that there must be two sets of lines that are connected, and then in order to avoid signal crosstalk, it must be in contact with the 1236 copper plate of the network card in order.

How to determine the position of the network card contacting the copper sheet No. 1236? Because the network card is directly connected with the network cable, it will be fixed and dead, and it can not meet the needs of multiple disconnection and re-contact, at this time the crystal head will come out, and the combination of the network cable and the crystal head can meet this requirement. We can confirm the number of the copper sheet of the network card through the crystal head, the buckle of the crystal head is facing down, the side of the copper sheet that has contact is facing up, and the number from left to right is 1-8, as long as the 1236 copper sheet of the crystal head is connected to the network cable, the network can be connected.

Let's talk about how to connect it specifically: yours wants to connect to the switch through an extension cable, if the network cable inside your book is not long enough, this requires an intermediate network cable to be connected. You can also consider buying a network cable adapter, but I'm afraid that this book can't fit the adapter.

The key to network cable docking is to confirm the number of your four wires, and the general connection is also soldered in order. Take out your port, follow the original connection to see if it is soldered to the port in turn, and make sure that the original connection is not cross-scrambled. If it is not disturbed, it is connected in turn, it is very easy to do, the port contact crystal head buckle side down, contact the copper plate side up, from left to right, contact in the 1236 copper plate to confirm the number, and then wiring, the extension wire is connected and then make the crystal head.

When doing it, according to this number, insert the crystal head in turn and press down the crystal head No. 1236 that touches the copper sheet. If the port wiring is not connected in turn, then you can follow his original connection, and then check the 1236 position on the port to find the 1236 of the network cable and then wiring it to make a crystal head.

I've had a similar issue as well:

Test environment: network cable: super Category 5 cable.

Wireless router: Netgear WNDR4300 (5 Gigabit ports, Athoras chip)

2 laptops: 1ASUS A52 notebook with JMarmicron Gigabit LAN card, Win7, XP dual system.

2.HP CQ40, with Realtek Gigabit LAN card, Win7, XP dual system.

Use HP CQ40 to connect to the router, Win7, XP can be connected normally, reaching gigabit speed. Use ASUS A52 to connect the router under XP, the router light does not turn on, and the laptop shows that the network card is disconnected; Win7 can be connected after updating the driver, but the speed is only 100 megabits. If the wired network card of the ASUS laptop is forced to be set to Gigabit, it will not be able to connect normally.

If you force the wired network card of your ASUS laptop to be set to 100 Gigabit or 10 Gigabit, it can connect normally under Win7 and XP, but the speed is only 100 Gigabit or 10 Gigabit. Connect ASUS laptops and HP laptops directly, and the connection can be normal in auto-negotiation mode, Gigabit speed.

During the test, the connected router interface and the network cable used are the same, which eliminates the quality of the network cable. Win7、XP has been tested,Driver wizard、Official driver have been tried。

According to the test results, I personally think that there may be a compatibility problem with the jmicron network card when connecting to the Gigabit switch router, if this situation occurs when using the network card, you only need to change the rate and duplex mode of the network card to 100 Gigabit full duplex.

Switch interface configuration, some switch interfaces are configured as full gigabit, not 100 Gigabit or Gigabit adaptive, at this time, the 100 Gigabit network card will definitely not be lit.

I don't know if the model of your laptop network card is 100 Gigabit or Gigabit, if it's 100 Gigabit, it definitely won't work, and if it's Gigabit, it can also be adjusted to 100 Gigabit mode. If your switch port is adaptive, it's easy to do, if it's Gigabit full-duplex, then it's not possible.

Check whether the speed and duplex mode of both ends match, especially when one end is auto, it is easy to have problems.

If the network of the switch connected to the switch is not reachable and the Gigabit network is displayed, it may be due to the following reasons:

1.Network cable connection problem: Check whether the network cable connected to the switch is plugged in properly and whether it is damaged or loose.

3.Network topology: Check whether the connection between switches is correct and whether there are any loops and redundancy.

4.Switch Fault: Check whether the switch itself has faults, such as port faults or internal faults.

If the problem persists, you can replace the switch or adjust the network topology.

There are only 4 lines for 100 Gigabits, and 8 lines for Gigabit network cables, which may be one or more of the 8 lines. If possible, use a line tester to test it, please see the following information for the specific connection method.

1. Scientific approach.

1. The form of Gigabit Category 5 or Super Category 5 twisted pair is the same as that of 100 Gigabit network cables, and it is also divided into two types: pass-through and crossover. There is no difference between the pass-through network cable and the one we usually use, and it is all one-to-one. However, the traditional 100 Gigabit network only uses 4 cables to transmit, and the Gigabit network uses 8 to transmit, so the production of Gigabit crossover network cable is different from 100 Gigabit, and the production method is as follows:

1 to 3, 2 to 6, 3 to 1, 4 to 7, 5 to 8, 6 to 2, 7 to 4, 8 to 5.

1 orange to white-green.

2 orange to green.

3 white-green vs. white-orange.

4 blue vs. white-brown.

5 white-blue vs. brown.

6 green vs orange.

7 white-brown vs. blue.

8 brown vs white-blue.

2. Gigabit network cable can be made with super 5 category 5 cable.

Category 6 Gigabit Ethernet Cable Water Lens Sequence.

Cross::A: Orange White (1), Orange (2), Green White (3), Blue (4), Blue & White (5), Green (6), Brown & White (7), Brown (8).

b: green and white (3), green (6), orange and white (1), brown and white (7), brown (8), orange (2), blue (4), blue and white (5),

For a long time, there are two opinions on the practice of 1000m network cables, in the case of using 6 types of cables as materials:

1。Use the TIA568B

That is, both ends are connected with white orange orange white green blue white blue green white brown brown.

2。Use full crossing.

The correspondence is as follows. White, orange, white, green, blue, white, blue, green, white, brown.

White-green, green, white-orange, white-brown, brown, orange-blue, white-blue.

Second, no matter what the connection, Gigabit is faster than the ordinary, and the anti-interference ability is strong, because the line is thick, the long-distance conduction data can reach more than 130 meters compared with the ordinary line, which has been connected before, but there is a light packet loss rate, which is not possible for ordinary lines!

Third, you ask the gigabit standard line can be backward compatible with the ordinary standard line I don't understand what it means, the gigabit network head can be connected to the ordinary line like the use, and the short distance in the absence of interference, that is, the use of test software will only have a small to negligible difference, the gigabit network card can be used normally regardless of the gigabit network head, connected gigabit line can be!

Therefore, you do not have very strict link requirements (for example, scientific research must be accurate to the transmission rate of one byte), you can go to the computer city to buy a general gigabit network cable to connect to meet your maximum transmission demand, because the copy reading bottleneck of the hard disk will limit the use of the gigabit network cable, that is, 50 and 50 computers use this line at the same time, and they can't make full use of it, and they can't give full play to the role of the gigabit network cable. Hundreds of megabytes of the two connected resources are also completely unusable, to put it bluntly, the two of you do a gigabit line a lot of psychological thinking that this is a high-level line, stronger than ordinary network cables! So I suggest you don't have to worry about that!

100m only needs to be four-line (it's okay, 100m needs to be eight-line all-pass.)

Check whether the network cable that does not work is standard.

1. Yes.

Second, the hardware connection method:

1. One end of the network cable is connected to the LAN port of the router, and the other end is connected to the switch port.

2. One end of the network cable is connected to the LAN port of the router, and the other end is connected to the network port of the computer.

3. One end of the network cable is connected to the switch port, and the other end is connected to the computer network port.

3. The router needs to be configured in advance, and the configuration method is as follows:

1. One end of the network cable is connected to the WAN port of the router, and the other end is connected to the LAN port of the cat;

2. Open the browser, enter the IP address of the router), enter the router account and password (see the label or manual on the router box);

3. Click Next;

4. Select PPPOE (ADSL Virtual Dialing) in the Internet mode, and click Next;

5. Enter the broadband account provided by the broadband operator in the Internet account and the broadband password in the Internet password;

6. Set the wireless network name in the SSID, select the WPA-PSK WPA2-PSK encryption method, and set the wireless password of no less than 8 digits in the PSK password;

7. Click Restart, and the router is set successfully.