Will changing the web site IP affect our rankings?

Using Multivariable testing tools require a new IP & CNAME

[paladin]

I'm planning to use a multi-variable testing tool for a cliennt's web site. To do so we need to add a CNAME to the nameserver, which will point to the tool with a new IP address and then on the back end go back to the site adding a x-forwarded by to the HTTP headers. The client will not see any difference in the URL.

Basically, instead of going from browser to nameserver to web server, it will add a step between the nameserver and web server.

Current:
browser=>nameserver=>web server

New:
browser=>nameserver=>testing tool=>web server

We will be the only website on this IP.

Is there anything we should be wary/carefull of? Anything we can check in advance?

thanks,
Alon

[tedster]

This is something like moving to a new host - which is usually trouble free unless someone makes a nasty technical error with the DNS. Matt Cutts posted a primer for moving hosts a few months back that might help you clarify your plans.

[mattcutts.com...]

[paladin]

Thanks for that link.

Besides making sure we are the only ones on the new IP, is there anything we should look out for in the IP itself?