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IP ADDRESS ALREADY RESERVED?

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by peejay

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To whom it may concern:
I am trying to setup a new user on our network and I am having massive problems. I have tried everything and I have almost given up. We got a new computer in and I just wanted to set it up on the network, but I keep getting the message that this IP address is already reserved and the internal something is now disabled. I didn't do anything different that usual when setting up this user. The OS in NT. This is the first problem I've run into when setting up users because I have been doing it for about 5 months now and I haven't had any problems on any OS (95/98/NT) Anyway, I uninstalled everything and reinstalled it and I'm getting the same message. I did run a test on the card (which is built in to the motherboard) and the loopback test failed. PLEASE HELP!!!

3 replies

by russ werner

When a NIC is installed under tcp/ip protocol it is automatically defaulted to receive it's ip number and sub-net mask from a DHCP. If this is the case check the range of ips your DHCP has to allocate. If you are manually entering a ip number the convention is for a computer not connected to the internet is to have an ip in one of the following ranges. class A 10.0.0.0 sub-net mask 255.0.0.0, class B 172.16.0.0 - 172.31.0.0 sub-net mask 255.255.0.0, and class C 192.168.0.0 - 192.168.255.0 sub-net mask 255.255.255.0 You can not have two computers on the same network with the same ip and the ip must fall within the sub-net mask. I hope this helps, or at least confirms you philosophy in your addressing scheme.

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