Re: Changing IP addresses SBS 2000 Network
From: Lanwench [MVP - Exchange] (lanwench_at_heybuddy.donotsendme.unsolicitedmail.atyahoo.com)
Date: 10/31/04
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Date: Sun, 31 Oct 2004 10:42:49 -0500
JeffM wrote:
> I am not only replacing the SBS 2000 server with an SBS 2003, I am
> also replacing a very old Netscreen router with a SonicWall router.
> When I switch the router to the new one the workstations have no
> problem getting on the web, but the server can't.
>
> I did change Wins, DNS, Subnetmask is correct, did not run the ICW
> however since I don't see one in Windows SBS 2000.
>
>
> Workstations have hard coded IP's an can ping the IP of the server,
> but not the name of the server.
Why on earth wouldn't you DHCP? It's a godsend. :)
What do you see in ipconfig /all? Is the DNS suffix correct? DNS pointing
*only* at the LAN IP of the SBS server? WINS is correct?
You can still run ipconfig /registerdns if you have static IPs- also might
want ipconfig /flushdns.
>
> The fact the server can't even get on the web after the switch shows
> something is quite screwy.
Not enough info. From the server, can you ping:
1. The LAN IP of your Sonicwall
2. A public DNS server (your ISP's or, say, 4.2.2.1)
3. www.yahoo.com
If only #3 fails, you have DNS problems. Check your config.
> When I change its iP back to the old one,
> and switch back routers it works just fine on the web.
>
> I did correctly set the server DNS, and put the DNS in the
> workstations as well, pointing to both the server and the router IP. '
Ix-nay. Only the LAN IP of the SBS box. Never use external DNS server IPs on
any server or client on your LAN - you need forwarders in your SBS DNS
server to your ISP's DNS server (or root hints) for external resolution.
This is one of the tenets of Active Directory configuration.
>
> Pinging the server by name doesn't get a response.
Points at a name resolution/DNS issue.
>
> I was resigning myself to having to switch the IP after I get done
> installing the new server, I was just hoping to do it first so I
> didn't have to change it when I was done installing the new one.
>
> "Lanwench [MVP - Exchange]" wrote:
>
>> JeffM wrote:
>>> I have been trying to change the IP addresses for a SBS 2000 server
>>> and the systems on the network. The problem is, the previous
>>> consultant used a Public IP for the network address range, and I
>>> want to move it over to the 192.168 range before installing an SBS
>>> 2003 server.
>>>
>>> Have a new Sonic Wall router setup for the 192.168.100.x ip range
>>> and it is all configured correctly.
>>>
>>> When I replace the existing router with the Sonic wall
>>
>> Not sure what you mean -you have an existing Internet router/gateway
>> device which you're leaving in place, right? So you're talking about
>> replacing something else?
>>
>>> all the
>>> workstations have no problem at all accessing the web or seeing each
>>> other, but the SBS 2000 server won't connect to the web or see/be
>>> seen by the other systems on the network.
>>>
>>> I have gone into the Server's network card settings (only one card)
>>> and changed the IP to 192.168.100.100.
>>
>> And the DNS, and the default gateway? Subnet mask is correct?
>>
>>> Have then replaced the router
>>> and the server could not be accessed. I then went into the DNS
>>> settings and changed all the IP's for the domain right under the
>>> Forward Look up zone, so that all systems are listed in the new
>>> range including the server. Still the workstations can't see the
>>> server and the server can't get on the web.
>>
>> After changing the IP on the server, make sure you fix your DNS on
>> the server - make sure it's running right. Look in the DNS event
>> logs for errors.
>>
>> Did you change your DHCP scope on the SBS server so all clients are
>> picking up the new info? As in, DNS (SBS IP *only*), WINS (if you
>> use it - also SBS IP, 0x8 for hybrid node), gateway (LAN IP of
>> Sonicwall). I'm presuming your DNS suffix hasn't changed ;)
>>
>> On all client PCs, run ipconfig /release, ipconfig /renew, ipconfig
>> /registerdns. You'll need to wait a bit til that works.
>>>
>>> Have added a Hosts line pointing to the server, on the workstations,
>>> but the still can't see it on the network.
>>>
>>> I can ping the server from the workstations and they get a reply to
>>> the server IP, they just can't access any files on it.
>>
>> When you pinged the server by name, what happened?
>> If you got a reply, was it resolving via DNS or by broadcast? You
>> can tell - if the reply comes from server.domain.local (or
>> whatever), it's using DNS as it should be. If it's just from the
>> name (server), it's broadcast, and your DNS isn't working right.
>>>
>>> I have moved IP ranges in the past on servers and had no problems,
>>> but this SBS 2000 server just isn't acting right.
>>>
>>> I wanted to swap the IP range over to a private range before
>>> installing a brand new server with SBS 2003, but I don't seem to be
>>> getting very far.
>>>
>>> I know this SBS 2000 server was never setup right in the first
>>> place, it works, but it is a mess. It was upgraded from SBS NT to
>>> 2000 and had some real quirks, but has run ok for 2 years so I have
>>> avoided changing anything until I had the new server ready to
>>> install.
>>>
>>> Anyone have a clue why I can't change this server over from it's
>>> 90.x.x range to a 192.168.x.x range and get it to be seen on the
>>> network.
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