Networking and Windows 2K Server - not working 1

[wniatbms]

I have a windows 2000 server laptop (laptop9) on my LAN here at the office. There are 7 laptops on the LAN. Our default gateway is 200.0.0.1. For the life of me, I cannot see other computers on the network from laptop9 and other computers cannot see laptop9. Oh, and laptop9 is configured as a domain (localhost.com - the full computer name being laptop9.localhost.com)

Please help - this is very urgent.

Thankin you in advance

William
JHB
South Africa

 

[igortsin]

First try to check connection to another pc.
ping by ip address.
ping by workstation name.
ping by full name.
Make sure DNS, WINS or HOSTS file works

 

[bcastner]

Clear up two things for me:

1. 200.0.0.1 is a public IP address, it is not a private LAN IP address range. If any of your computers have access to the internet they will never find your gateway. You cannot use public IPs as local LAN IPs and not expect problems.

The Internet Assigned Numbers Authority (IANA) reserved the following three blocks of the IP address space for private internets:

10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)

IP addresses in these ranges may be freely assigned on local networks because they are not routable on the public Internet. Data from devices with Private IP addresses will not be allowed onto the public Internet.

2. Do not use reserved words in DNS names.

It is remarkably ill-advised to use "localhost" as the part of full domain name on your network.

 

[wniatbms]

bcastner

Our LAN hub is connected to a DIVA LAN ISDN modem. This device is 200.0.0.1. All the Laptops on the LAN have a 200.0.0.? address and to reset the modem we log onto 200.0.0.1. All the other laptops see eachother fine except this Windows 2K laptop.

If I change the IP address on this laptop (Windows 2K) to an IANA approved address, must I have all the other address on the LAN changed too?

Thank you for your help.

William.

 

[wniatbms]

Just something else...

When I try to see laptop9 from a different laptop or if I try to see a different laptop from laptop9, the common error is "Can't find network path".

Thank you

William