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Is a batch file the only way to release and renew an IP in one step?

ipconfig /release
ipconfig /renew

I unfortunately have to admin some Windows servers using Remote Desktop. Obviously if I type ipconfig /release, then I'll loose my connection and won't be able to ipconfig /renew. Obviously this can be done with .bat files, but I wanted to ask the pros just to see if there were any other tricks to doing it in the Windows server world.

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The 'pros' would look to have an out-of-band remote management solution such as HP Integrated Lights Out or Dell's DRAC system in place. It then doesn't matter if the main network interfaces are functional with a correct IP address or not, you can still remote control the server to get them changed and working again. –  SteveBurkett Jun 25 '10 at 11:33

4 Answers 4

up vote 7 down vote accepted

Most people I think just either use static IP addresses for servers, or fixed DHCP assignments, and don't change IP addresses outside of scheduled reboots (Changing endpoints on running servers=bad). A bat file seems the simplest solution, but honestly even a straight up release should autorenew an IP address before the remote desktop session times out.

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in agreement, sounds odd to have renew the ip address of a server- it is generally not recommended. –  redknight Jun 24 '10 at 17:57
+1 DHCP on a server is not recommended at all, but I'd go with a right-click Repair on the NIC properties in the systray; that should work too and on a remote workstation I just tried, my RDP session persisted without issue. –  gravyface Jun 24 '10 at 17:58
I'm in the process of switching the server from a fixed address to a static DHCP lease on a new DHCP server. That's why I need to release/renew it, so it picks up its static lease from the new DHCP server. –  Jakobud Jun 24 '10 at 17:58
When you set it to DHCP it should auto renew? It certainly shouldn't need to release (what would it even be bound to?). –  yasth Jun 24 '10 at 18:01
Agreed that this, in general, is not something you would want to do... but when setting up the machine to use a static IP in the first place, while remoted in? It just saved my bacon. –  mmc Feb 3 '13 at 20:55

Combine the two commands into one

ipconfig /release && ipconfig /renew

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Use AT command. Example AT 12:58 ipconfig /release

AT 12:59 ipconfig /renew (this is useful when connecting with psexec, because it does not handle && commands)

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In powershell it would be ipconfig /release | ipconfig /renew

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