Last week, the telecom technician came to my house again and said that he suspected that I had a PCDN at home. The basis for his suspicion was that there was a large amount of upstream and downstream traffic for 215 consecutive hours (in fact, I downloaded very little during this period, less than 1T in 215 hours, and less than 300G in uploads). I was speechless. My transmission upstream is limited to 1024KB/second. What else can I do?
I just took a look at the recent cases online of users whose speeds were throttled or whose Internet was disconnected by operators in the name of PCDN. It seems that all major operators are using the panacea name of PCDN to crack down on users with large upload volumes (this "large" is relative to ordinary home users. You know, the average home user's upload volume may not exceed 1G in a day~), so I also feel the danger: after all, I am an old user who uses a public IP package at a very low price, and I am a thorn in the eyes of the telecom. If they get the chance to accuse me of violating the rules and take back my public IP, I will suffer a great loss (although I don't use the public IP now, but if you can get a good deal, you are a fool not to take advantage of it).
After much thought, and considering that I had experienced a three-day internet outage last year, I already had a sense of crisis, so I simply subscribed to a gigabit broadband service from China Mobile, which boasts 1,000 megabits of downstream and 100 megabits of upstream.
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Believe it or not, there is actually nearly 130Mbps uplink:
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After more than a week of work, I finally managed to split my intranet connections. All my home data center-related connections are now connected to China Telecom, while all other applications (including PT downloads) are connected to China Mobile. China Mobile's connection is now the default connection, and China Telecom and China Mobile serve as backup lines for each other. Now, aside from power outages, I no longer worry about accessing certain applications due to broadband issues. Although I was forced to add China Mobile broadband, I suddenly feel more secure with dual broadband. It also fulfills my long-held dream of dual broadband.
Indeed, my China Telecom home broadband, which only runs PT, was recently flagged as PCDN. The first time I went to the service center and completed the formalities, the restrictions were quickly lifted, but not long after, they re-blocked me. They later told me there's no way to unblock it. I'm now using a project on GitHub to bypass the speed limits. My public IP is still there, but it's assigned an IP in another city in my province. I used to use iKuai, but because it lacks hardware acceleration and the free version doesn't support binding multiple IPv6 links simultaneously, I switched to ImmortalWrt with HNAT on mt7986. I also connected to China Mobile's 1000M bandwidth (Southern China Mobile is really stingy, only giving me 40M uplink on their gigabit broadband), and used mwan3 for simple traffic diversion.
My home broadband plan comes with a public IPv4 and triple-dial (three public IP addresses), and it also supports IPv6. So, I'm not interested in messing around with China Telecom's broadband these days. If China Telecom takes advantage of the situation and revokes my IPv4 public IP, I'd be in big trouble. Since I started using PT many years ago, before PCDN, my upload traffic could easily rival an entire residential area. So, I was already a key target for China Telecom, and honestly, China Telecom has been quite lenient with me. Last year, my iKuaiShang account was scanned and the Communications Administration blocked my account for three days, bypassing China Telecom. After I complained, China Telecom took the blame and compensated me for a month's internet fee. So, when they're about to take action against me, they're very cautious and don't resort to the same reckless actions as the average user. However, I graduated from PT a long time ago, so uploading isn't a big deal anymore. Given the current situation, I'd like to keep my China Telecom traffic as clean as possible, primarily for critical applications in my home data center. So, I've migrated all my PT and other traffic to China Mobile's data center. But what surprised me was that after changing the mobile optical modem to a bridge and using iQuick Dial directly, although I got a private mobile number starting with 100, the NAT type was "Endpoint-Independent NAT", so I could still use PT.
Now all operators have deployed servers to check PCDN, and they can check it accurately.
If you want to check, you can definitely locate it accurately. However, it seems that PCDN is more often used as a panacea for imports. The target of rectification is all users (including live broadcasts) who exceed the upstream traffic standards of "normal users". Some express delivery stations have been blocked because of the large amount of traffic uploaded by scanning every day.
There are many PCDN misjudgments now, for unknown reasons.
It's not a misjudgment. It would only be a misjudgment if it were a real judgment. Now it's purely a one-size-fits-all judgment based on the "upload" volume. According to the mobile engineer, 80%-90% are all wronged.