Moving to new IP address on same server

We need to put one of our sites on a new IP address

[bwnbwn]

Here is the question I need some help on. I have moved many sites to different servers that resulted in new ip addresses. I have that part down and understand the process. I need some help on this one.

We are having to move an established site to a new IP address so we can set up a secure certificate for that site. We are keeping it on the same server it is a windows server.

When we change the DNS to the new IP address how do I set this up or can it be set up to keep the bot from hitting a dead site as we will change the IIS on the server so the old IP address will no longer be accessible to the bot until the bot picks up the new ip address and replaces the ip address of the site.

[particleman]

Someone will have to correct me if I'm wrong, but I believe you can temporarily direct request on the old IP address to continue to display the site by using Host headers. Add 2 host header entries pointing to the old IP(www,*), assuming they are both IPs on that server. I don't believe SSL will work correctly for those users though.

[bwnbwn]

We tried that as well but it was a no go. Thanks though. I looked and looked for an answer and I don't think there is one so the only thing to do was change the dns and IIS.

[Jack_Hughes]

Can you keep the old site running on the old IP address during the changeover for a week or so? That's what I always do that way during the transition there is no danger of a bad request being given to google.

[bwnbwn]

Jack_Hughes nope same server same IIS so I thought and thought about it and feel being on the same server using thre same IIS there really shouldn't be issues. It has been a week now looks like all is well no errors in tools.