What is the reason why the broadband cannot access the Internet?

The reasons why broadband cannot access the Internet are: 1. After the pigtail head is pulled out, it is contaminated and stained with dust; 2. The outdoor optical cable is broken; 3. The network cable from the optical modem to the router is connected incorrectly; 4. , the connected network cable is broken; 5. The network cable from the router to the computer is connected incorrectly, etc.

The key equipment for broadband Internet access includes: optical fiber, optical modem, wireless router, network card, including wired network card and wireless network card, network cable; these five types It is essential and indispensable. As long as one of the links fails, it will affect the normal use of broadband.

Fiber Optic Fault(Recommended Learning: PHP Video Tutorial)

Fault Phenomenon: Optical Cat LOS Indicator Turns Red

Cause of failure 1: After the pigtail head was pulled out, it was contaminated and stained with dust.

Solution: Use alcohol to clean the pigtail head and fiber port, and plug them back in.

Fault reason 2: The outdoor optical cable is broken

Solution: Please call Broadband Service provider customer service reports repairs.

Network cable failure

Fault phenomenon: The optical modem indicator light is normal, but the Internet cannot access the Internet

Fault location 1: There is a problem with the network cable from the optical modem to the router

Fault possibility 1: The network cable from the optical modem to the router is connected incorrectly.

Solution: Generally, a multi-port optical modem network cable is connected from LAN1 to the WAN port of the router.

Generally, the LAN2 of multi-port optical modem is usually connected to the IPTV set-top box.

(Some local operators may have different ones)

Fault possibility 2: The connected network cable is broken

Solution: Replace the network cable

Fault location 2: Router to computer

Fault possibility 1: The network cable from the router to the computer is wrongly connected

Solution: Connect the computer network card from any LAN port of the router.

Fault possibility 2: The connected network cable is broken

Solution: Replace the network cable

The wireless network cannot be used normally

Fault phenomenon 1: The computer can access the Internet normally, but the wireless terminal cannot access the Internet

Fault possibility: Wireless SSID connection error

Solution: Connect the correct wireless SSID and enter the correct password

Fault Phenomenon 2: The wireless signal is good and sometimes lags,

Fault Possibility 1: The distance is too far

Solution: Add a wireless repeater to expand the wireless signal

Fault possibility 2: There is interference in the wireless signal band

Solution: Change the wireless SSID channel to 1, 6, or 11. These three channels have strong interference resistance.

The wireless network can be used normally, but the wired network cannot access the Internet

Possibility of failure 1 The IP address of the network card is incorrect, and the DNS is incorrect

Solution: Restart Set the network card IP address attribute to automatically obtain the IP address

Fault possibility 2 The network card is disabled

Solution: Double-click the network card to enable it

Fault possibility 3 Network card failure

Fault phenomenon: If the network card is not disabled, when ping 127.0.0.1 is used during operation, the target address is displayed as unreachable.

Solution: Replace the network card

Neither wired network nor wireless network can access the Internet normally through the router.

Fault phenomenon: The computer is connected to the optical modem, and the dial-up Internet access pops up error 691

Fault possibility 1: Broadband account expires

Solution: Please go to Broadband Renewal at the operator's office.

Fault phenomenon: The computer is directly connected to the optical modem and can access the Internet normally through dial-up, but cannot access the Internet through the router.

Fault possibility 2: The PPPoE chip of the router is damaged,

Solution: Replace the router

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