NETSH (Change Default Gateway Only)

looks ok, do you open command prompt as an administrator? (right click it "run as administrator")

Try:
netsh interface ip set address name "Public Connection" gateway = 10.0.0.1
and as suggested use "run as administrator when opening command window.

CORRECT! we missed NAME parameter.
is not working try this:

netsh interface ip set address name="Public Connection" source=static  addr= 10.0.0.X  mask=255.255.255.0 gateway=10.0.0.1   gwmetric=1


*change ip address in addr=
**I guess you are using net mask 255.255.255.0?

after reading further - I think full parameters are required
hope this helps..

G

Guys -- I don't want to have to provide the IP address or Subnet Mask.

When I run the command with only the Gateway it sets the Static IP address to Dynamic (obviously this is not desired).

I'm going to be using this on 100+ Servers.

Thanks.

but did you try as follows?
netsh interface ip set address name="Public Connection" source=static     gateway=10.0.0.1   gwmetric=1

I think some parameters are necessary especially  " source=static"

Interesting I had never noticed, but yes the command does change the NIC config to dynamic addressing, it does not affect DNS.  Thus you would need to reset the IP as well.  The following works on Vista/Server 2008 and newer, may require slight modification on earlier:
(assume an IP of 10.0.0.11, GW of 10.0.0.254, and subnet mask of 255.255.255.0)
set address "Local Area Connection" static 10.0.0.11 255.255.255.0 10.0.0.254 1
However 2 catches;
-you must use "Run as administrator", turn off UAC, run as a startup script (not logon script), or psexec from Microsoft may work
-you would have to edit for every server as the IP changes.  You could write a batch file to parse the existing IP (let me know if you need a hand with that), and then insert with:
set address "Local Area Connection" static %currentIP% 255.255.255.0 10.0.0.254 1

Setting the default gateway peristently with route add will have the desired effect:
 route add -p 0.0.0.0 mask 0.0.0.0 10.0.0.1

:-) cleaver, I never thought to suggest that Qlemo, !!

Using the netsh command with 'source=static' does not work (comes back as invalid syntax).

Using the route add (persistent) approach does not meet the requirement (this does not remove the existing default route).

I had started going down the path of using batch to parse the existing IP (and had this working); however, some of the Servers have multiple IP addresses.  Unfortunately ipconfig sorts all of the IP's via numerical order so it was impossible to know which of the addresses was the primary.

Any other suggestions?

Looks like I could delete the existing gateway first prior to adding the new:

route delete 0.0.0.0
route add 0.0.0.0 mask 0.0.0.0 10.0.0.1

Thank you, Qlemo.

Well done.