No internet anymore

I had a dynamic ip address. I was able to access the internet. With my one desktop and one Xserve network. I just got a static ip address for my Xserve. As soon as I configured my Xserve with the static IP address. I lost all access to the internet with my Xserve. But, I still have access with my desktop. I am using a RVS4000 Cisco wired router as a gateway. I am using the gateway and DNS IP that my ISP gave me. I forwarded my new static IP address to port 80 on my firewall. I am still not able to access the internet with my Xserve anymore. In my Safari browser. My network diagnostic shows, Ethernet green, network setting green, ISP red(failed), internet red(failed), and server red(failed). Anyone please tell me what I need to do? To get back access to the internet with my Xserve.

In short - you can't do that. OS X Server will effectively not work using randomly assigned IPs under DHCP.
OSXS always wants to know what it's IP address is and always assumes it is the same. Even on DHCP networks when it is assigned a static IP I always set it to manual so there is never a chance that DHCP is down or is slow to respond and the server might have any missing or conflicting information in regards to its address because it causes so many problems.
You can change the IP address to a new static one but you need to follow the proper changeIP process to make sure that the changes happen in all the different places that they need to happen.
As to your second layer problem if your desktop already has the same IP as you assigned to your server than you need to fix that before anything will work. Go into your desktop's network assignment and re-lease against the DHCP server and get a new, different address. (You might also take your Xserve's ethernet down and start it up again if you're paranoid.) And then you can see what is or is not working in your current set-up.
Currently your multiple use of the same IPs is masking your real layer of problems so that's step 1. Step 2 getting your OSXS IP changed correctly so your various services will actually work.
HTH,
=Tod

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Click on the link below to see more details and screenshots.
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OS X Mountain Lion: Zoom content on the screen
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What was the status when you powered off everything and power all back on?
Say thanks by clicking the Kudos Thumbs Up to the right in the post.
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I worked for HP but now I'm retired!

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Regards
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Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, or by a peripheral device.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
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The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

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http://support.apple.com/kb/ht3728
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