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IPv6 switch on the router, test-ipv6.com still 0 points? It's the same at my house—after a night of fiddling, I realized the switch was on the router and the key was in the optical modem. To change the IP mode of optical modem routers, there's also the pitfall of prefix delegation—explained all at once....

The webpage keeps spinning and the navigation site pops up. People online say change DNS, but after I fix it on my computer, it doesn't help. Later, when I checked ipconfig, I found out that the DNS for the whole house was sent by the optical modem. This article clarifies who is sending DNS, where to change things in the optical modem, and the three pitfalls that don't work—trying each of these three approaches one by one....

When the light cat tries to move a position, the choking thing is never the cat, but that yellow leather line. Four options: cable installation, cold connection extension, hiring a technician to fuse fiber, and only moving WiFi—I tried them one by one, from 0 yuan to 100 yuan. I calculated everything, and after moving, I even marked the required light degradation for you....

What should you do if the telecom optical modem has a major degradation? My broadband at home drops 940Mbps during the day and drops 100Mbps at night. Restarting the router eight times didn't help. Finally, I saw a -29 in the background of 192.168.2.1 before solving the case. This article explains where to check for clear light degradation, how much is considered large, which three places can be checked yourself, and what situations to call 10,000 to report weak light....

How to change telecom broadband plans to be cost-effective? My 169 yuan fusion package quietly rose back when it expired, and after three years of billing, I finally saw where the money was spent. This article clearly explains how to read contracts, how to exploit free speed boosts, and mentions the pitfalls of 100 Mbps optical modems after gigabit modems. Following this order can save hundreds a year....

The official firmware for the Telecom optical modem is not available for download; upgrades are triggered entirely by ITMS push notifications and fault reports. I went through all three main roads: the 10,000 pitch, Xiaoyi Butler repair report, and district unified promotion. Don't skip the two things you need to do before upgrading: copying the WAN meter and WiFi password....

Want to connect both routers at home to the optical modem? First, remember that a broadband account can only dial once at a time; if both phones dial in at once, the lines will be skipped. I helped three families connect and went through all three connection pitfalls: optical modem router mode, bridge mode, and switch setup....

Gigabit broadband speed test is only 93 Mbps? Don't rush to criticize the carrier; most likely the network cable is plugged into the 100Mbps port of the optical modem. Check the screen print, check the backend for negotiated speed, check the computer connection speed—three ways to identify ports, include a four-core network cable slot and a free gigabit modem replacement....

After installing my own router, the ChinaNet WiFi that comes with the optical modem is still on, but my phone is always stuck to a single bar. The speed fluctuates between fast and slow, plus there's an extra door for people to get caught off guard. I used useradmin to log into the 192.168.2.1 backend and turned off the optical modem WiFi. I recorded the two entry points for the webpage and Xiaoyi Manager, the one thing you had to do before closing, and the ITMS push back defense—all in one go....

During remote work, the company VPN completely disconnected from home during a single visit. After checking all night, I found out the company network range clashed with the optical modem's 192.168.2.1. I used telecomadmin super admin backend to move the optical modem's LAN IP to 192.168.5.1, and recorded all five steps, the four aftermath changes, and the ITMS rollback defenses....