IP address changed, subdomains added - how will affect?

[maddogx]

Hello,

Two weeks ago we have changed IP address of our website, also we've added new subdomains for static content (like img.domain.com & js.domain.com) and changed the links on the site accordingly.

The old IP is also working and the old links are accessible too.

For some reason, since the change, we see a SE (google) traffic constant drop everyday.

I've read only Google's support (http://support.google.com/webmasters/bin/answer.py?hl=en&answer=34437)

that such change shouldn't affect the ranking anyhow. On the other hand I've consulted with SEO people and was told that such change may affect in the close new feature (for couple of weeks) and then bring the ranking back.

I would like to hear another opinion, I want to get back to our board with approved answers.

Please advice.

Thanks.

[maddogx]

thank you.

[zeepartner]

The links are not related to your IP, but to the URL. If images are available on both img.domain and www.domain, then you have a duplication issue. Best practice is to 301 redirect from the old to the new URL to give a clear indication of the unique location they are on.

[maddogx]

The old IP and the new IP are working.

Yes we changed DNS.

And also as I said the old links are working and the new links also working, because they're relatively on the same please, so:

img.domain.com/image.jpg = www.domain.com/image.jpg

So in case Google is trying to access the old links, they are working too. Same for the old IP.

[zeepartner]

Indeed, an IP change shouldn't have any impact. What do you mean by "the old IP are still accessible"? You routed the DNS to the new IP, right?

A possible reason I might see is that you may have changed your images to a new subdomain - img.domain.com). Did you redirect from where the old images were placed? If not, this might explain for part of the traffic drop since the new images have to be re-indexed.