The reason analysis of the hair or the right to drop after the website change IP

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We all know that the site to replace the IP will cause the search engine down the right and the amount of decline in the image, but this is like how it caused?

The main cause of this phenomenon is the search engine DNS update cycle is longer. Last May, I changed a VPS that time to change the VPS for me to hit the big too, the site was overall down the right. Included only One-third. The site is reduced to more than 1000 IP per day, 1W. I was asking around for help but there was no good way. Since then, I am particularly afraid of changing servers. After replacing the server site weight and included are affected by the concept of deep in my mind. May 25, 2012, my site's VPS still has half a month expired, because used to buy through the agent, now a long time, find no agent, no way to renew, can only change a new VPS, everything perfect over, new VPS completely normal access after the domain name to the new VPS, It was just an emergency to go out, did not stop an old VPS Apache and delete the data after the go out.

The next few days, I am concerned about the site's keyword rankings and the amount of change, the site rankings and the amount of the collection are very normal, although the amount of the collection did not increase, but did not decline. May 28, 2012 Night (Thursday night, My site is Friday or Saturday morning Update), for the first time after the new VPS face Baidu Update Day, that night, I am a few minutes site, until 29th morning five, the site included not only no drop, but also a little rose, this I can rest assured. A good night's sleep.

Number 29th late, suddenly think of the old VPS data has not been deleted, after boarding in the security dog to see the site unexpectedly there are a large number of visits? My domain is explained to the new VPS for a few days, how will there be access? My first reflection is that someone else explained the domain name to my vps, so I searched the full name of my site on the search engine. Found not, that's what's going on?

Open the Web site access log, I was dumbfounded, access records are all search spiders. What's going on, the domain name has been explained for several days, how there are so many spiders crawling?

And then open the new VPS Web site access log, found that there is no spider crawling records, Baidu a day only a few records, and all is only crawl the first page, and are the same IP. Through the Bulk Ping tool and find some friends site, the domain name is completely pointed to the new IP, then there are only two explanations.

1, search engine DNS update cycle is very long, and did not update my new domain name explanation.

2, search engine DNS is its IP crawl rather than domain name. But IP is determined by the domain name, that is, the IP update is also based on DNS, and ultimately it comes down to the DNS did not update in time.

OK, now we know the site for new IP after the site, a period of time, the search engine or crawl the original IP, how this will affect the site's collection and ranking it?

Suppose we changed the server, the original server to stop working, then, when the search engine to crawl the page, will return errors, this error let the search engine that your server has been down, this error to the search engine to update your domain name point IP after the end. In other words, before the search engine has not updated DNS, if you stop the original site, then that is, your site in the search engine records are inaccessible, this time if the search engine check your site records, the search engine will come to a conclusion: this page has been deleted. In this way, the site after the IP, if immediately stop the original IP services, will certainly result in weight and fall (that kind of search engine one months do not crawl the site except).

To June 10, 2012, my site, all search engines on the new IP normal crawling, this cycle throughout the entire two weeks. Suggestions: If you want to change the server or IP, it is recommended that the old server to continue to work more than two weeks, preferably one months.

Author: http://taobaokaidian.com stationmaster Wen