Does changing site IP reduce Googlebot crawl?

[linqing]

nowadays, we changed our website from one server to another, but 10 hours later, the entry number of google bot crawler decrease about 50%. we check our web page that there are not any errors.
Does the modification of websiite IP change the google bot behaviors?

[keyplyr]

Although it usually happen much faster, it can take as long as 72 hours for the DNS info to propagate around to all the networks.

[linqing]

thanks keyplyr.
this happened 3 times for me this year. we want to accelerate our website speed, every time, we changed our network to akamai, then 6 hours later, googlebot crawler pv dropped to only 10% of before. And we switched network back, googlebot crawler pv increased back as usual after 2 hours.

[tangor]

Changing IP will always cause a start/stop issue. As keyply notes it might take a few days to propagate. More than anything, any change can result in a "review" by search engines (all of them) to see if this is new, or an existing site on a different IP.

Given the number of NEW sites appearing on the web every day it's not surprising crawlers will do "sample and check" before running full bore.