Miner connection switch cannot be used

1. If the switch is OK, there is a problem with the cable

2. Error 619 is the ISP server can not establish a connection, you use 360, repair the ISP, and then check whether the ADSL signal lamp is synchronized correctly, to see if there is any physical fault on the telephone line

3. Routing can support 150 lines, but switching can't.
when your line comes out of the routing,
the signal has been weakened
and you connect to a switch below
the signal is very weak
when it comes to your PC,
of course, there will be no signal
you try to
use a hab
or
hub

4. Computer network hardware problems. According to your description, the router connection switch cannot be used when connecting the router
the solution is: 1. Confirm whether it is optical cat gateway or optical cat route. 2. For optical cat routing, you need to set PPPoE user password in it. Then the dynamic IP allocation segment should reach the maximum number of computers you can access. 3. Don't set the switches in the back, but clear the ones that have been set before. 4. Connect the router again, and set it as dynamic IP connection
5. If it is an optical cat gateway, it needs to connect the route first. 6. You need to set PPPoE user password in the router. Then the dynamic IP allocation segment should reach the maximum number of computers you can access. 7. Don't set the switches in the back, but clear those that have been set before.

5. Maintenance steps, first of all, confirm that the LAN of the switch is easy to use. Methods find two machines to connect to the farthest two points, set IP and Ping each other. If they are connected, it proves that there is basically no problem.
then check the connection rules of routing and switch. Switch to connect LAN port with 1 or 24 port router as far as possible.
then check the routing rules of modem. The modem must connect to WAN port.
at the beginning, we will encounter the problem Troubleshooting: 1 LAN (switch) Ping impassable, then there may be the network cable sort is not right or directly disconnected, there may be the computer itself did not set the IP, because there is no routing, IP need to manually set this one is the most troublesome. If multiple routers can't be connected at the same time, there may be some machines poisoned.
.... The more you say that there are more things in your mind, you can try first and then ask again.. You try to use the computer on the third floor to plug in the network cable on the first floor, especially the computer system itself

is the line sequence right? 123 6 can't have any problem with the core bad model weak?

6. TP-LINK switch is generally called fool type switch, because there is no need to configure data, divide VLAN and so on
I don't know your network structure, that is to say, I don't know what device your switch is under.
if it's under modem or router, you need to set IP in modem or router.
if it's under optical transceiver, you need to input IP into computer host... Set the local connection configuration to auto

7. If you can see the command line interface of Huawei in the window, it means that the line should be OK. Check whether your input method is in Chinese mode, which may lead to the failure to input

is there a switch? If you suspect that it is a cable problem, you can put it on other switches. But I don't use the original thread. It's OK. And what bit rate is set by the super terminal, right?

8. The reason should be that operators use MAC address binding. To solve this problem, router manufacturers have the latest driver. According to the router you said, you only need to update the driver of the router on the official website. After updating the driver of the router, you can dial the router to access the Internet. If the ordinary dial-up can't be reached, It should be able to be dialed with special dialing (different manufacturers may have different dialing methods)

9. You can see if there is a computer
arp
or
it manually configures the
IP
you can try to
pull the computer network cable next to the switch
if it is normal to pull it to the
LAN
it indicates that there is something wrong with the computer
you can
check
before
you should first pull out the router and switch's Cascade cable
however Then try to
whether the Intranet can be accessed
if it can
it means that the switch is good
if it can't, it means that there may be a problem with the switch

10. After connecting the switch, the computer in the Internet bar can't access the Internet. The reasons for this may include: unstable physical connection, improper computer setting, etc. Please follow the following steps to eliminate it:

1. Replace the network cable between the computer and the switch to ensure that the corresponding indicator light of the switch is on and the local connection is stable. Check method: the switch is connected to two computers, which are set in the same network segment. If they can ping each other, the connection between the computer and the switch is stable

2. Set the computer local connection to automatically obtain IP (before the front-end router turns on the DHCP server), right-click the local connection properties, select the Internet Protocol (TCP / IP), and click the Properties button

3. Select "automatically obtain IP address" and confirm

4. When the computer obtains IP normally, it can access the Internet normally

5. If you still can't access the Internet after normal access, please check the relevant settings of the front-end router to see if the computer is blocked from accessing the Internet

6. If the IP address cannot be obtained normally, replace the network cable between the switch and the router.