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修复互联网连接问题

按照以下故障排除步骤,诊断和解决常见的互联网连接问题。

1

Power cycle your modem and router

Unplug both devices for 30 seconds. Plug in the modem first and wait 2 minutes. Then plug in the router and wait 1 minute.

2

Check physical connections

Verify all cables are securely connected: coax/fiber to modem, ethernet from modem to router, and any device ethernet cables.

3

Test with a different device

Try connecting another phone, tablet, or computer. If all devices fail, the issue is likely your router, modem, or ISP.

4

Try alternate DNS servers

Change DNS to Google (8.8.8.8) or Cloudflare (1.1.1.1) in your network settings to rule out DNS resolution issues.

5

Flush DNS cache

Windows: run 'ipconfig /flushdns'. Mac: run 'sudo dscacheutil -flushcache'. Linux: run 'sudo systemd-resolve --flush-caches'.

6

Check ISP status

Visit your ISP's status page or call support. Outages and maintenance can cause intermittent or complete loss of service.

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常见问题

为什么无法连接互联网?

重启调制解调器和路由器,检查线缆,确认运营商服务状态,尝试更换DNS(8.8.8.8),并用其他设备测试。

为什么网速这么慢?

检查是否有后台下载任务,对比有线和无线测试结果,重启路由器,扫描恶意软件,如果速度持续低于套餐标准则联系运营商。

如何解决DNS问题?

在网络设置中将DNS更改为8.8.8.8(Google)或1.1.1.1(Cloudflare)。在Windows上使用「ipconfig /flushdns「刷新DNS缓存。

什么时候应该联系运营商?

当多台设备都受影响、网速持续低于套餐标准、在特定时间段断网,或调制解调器指示灯显示异常时。