How to solve ip address conflict: LAN IP conflict troubleshooting and solutions

How did this whole IP address conflict thing come about?

Office computers suddenly disconnect from the Internet, cell phones connected to WiFi but can not brush the video, in all likelihood, the IP address collision. Like two cars grabbing the same parking space, two devices in the LAN with the same IP address, the light is disconnected from the network lag, or the entire network paralyzed. Especially with the public agent of the occasion, some software automatically assigns the IP is not well coordinated, minutes will make this kind of moth.

Three Tips for Finding Trick-or-Treaters

Tip #1: The Detective Tool That Comes With Your Computer
At the command prompt, typearp-aThis command will strip out the IP and MAC addresses of all the devices on your LAN. If you see an IP followed by two different MAC addresses, congratulations on finding the culprit.

C:> arp -a
Interface: 192.168.1.100 --- 0x3
  Internet address Physical address Type
  192.168.1.1 00-11-22-33-44-55 Dynamic
  192.168.1.100 01-23-45-67-89-ab Dynamic
  192.168.1.100 aa-bb-cc-dd-ee-ff Dynamic ← Something went wrong here!

The second trick: router background check water meter
Log in to the router management interface (usually enter 192.168.1.1 in the browser), and you can see all the assigned IPs in the DHCP client list. if you find that there are two device names with the same IP, just disconnect one of them.

Tip #3: Agent Software Back Check
Some proxy tools automatically change network settings, especially those that require frequent IP switching. At this time it is recommended to switch toStatic residential IP for ipipgoThe fixed address is assigned to each device individually, which is much more robust than dynamic assignment.

A solution that addresses both the symptoms and the root causes

Focus on the solution to the proxy scenario: many friends doing data collection will encounter this situation - dozens of crawler programs running at the same time, with the local IP is easy to conflict, with ordinary proxy and IP duplication. This is the time to go onExclusive static IP for ipipgo, each program takes a separate independent channel, 35 bucks a month for a clean slate is much more cost-effective than tossing conflict issues every day.

QA time: what you might want to ask

Q: Which one should I choose, dynamic IP or static IP?
A: ordinary users choose dynamic residential packages on the line, 7 more than 1G flow enough to brush half a month web page. If you engage in cross-border e-commerce or data collection, directly on the static residential IP, a carrot does not fight.

Q: How to test if there is any conflict in proxy IP?
A: Use the test interface provided by ipipgo to call theirIP Detection APIIf you want to see the results of theconnection_countThis parameter. If it shows 1, it's exclusive, and if it shows 2 or more, it's shared.

// Example code for detection
curl https://api.ipipgo.com/check?ip=1.2.3.4
Returns the result:
{
  
  
  "isp": "China Telecom"
}

Q: How do I choose a package if my company has overseas business?
A: directly to their customer service to openCross-border international special line，能压到200ms以下。之前有个做tiktok的客户，用了这个专线后视频上传速度直接翻倍，关键是不用自己折腾服务器搭建。

Let's get real.

Solving IP conflicts is like treating water, blocking is better than dredging. Instead of tossing the allocation rules in the router every day, it is better to directly move the conflict-prone business to the proxy IP. ipipgo has a quite humane design - their client can automatically isolate the local network and the proxy channel, which is equivalent to the computer to open up a special lane, this design is really save a lot of heartache.

Lastly, a word of caution: don't just look at the price of an agency service, look at whether it's there or not!1-to-1 technical supportI've seen people buying cheap IPs from small shops before. I've seen people buy cheap IPs from small workshops, and when something goes wrong, they can't even find customer service. Regular service providers like ipipgo, at least can guarantee that at any time to find technicians to deal with the problem, the money spent is worth it.