Re: Problem with DHCP server...

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Hi Crina,

Thanks very much for your answer. You are, as usually, very helpful. As to your questions:
1. the DHCP is of course disabled on my router.
2. There is only one SBS server in my LAN.
3. ....................
4. If I try to enable the DHCP on SBS, I launch the DHCP option on the
server menagement menu and I see:
- no server on the list of DHCP servers
- when I try to activate the only one defined and visible on the list of DHCP, after clicking on the server I get the message (translation from polish):
DHCP server could not be found.
The choosen DHCP server could not be found. The server may not work, some net problems could occured or DHCP service is not installed. Error: DHCP service is not running on the host computer.

Both internal (LAN) and external (WAN) NICs are OK. On workstations the
option: "IP assigned by DHCP" is choosen.
If I switch off the server from the LAN and WAN and restart it, then the
DHCP works OK. If I then connect the server to the LAN after a few minutes, hours, etc. the DHCP from SBS stop to work. The server has been working OK for about 1 month. What's more on workstations an application installed on the server using MS SQL 2005 couldn't be run, but it worked OK when was run from SBS server. The message: "MSSQL could not be find" was shown. Internet connections was OK.

As you suggested I rerun CEICW. And Eureka. MSSQL start to work properly. The mentioned application can be run from workstations. But now... I lost connection to Internet. Ping with domain name fail, so as I suspect DNS stop to work properly, however all look OK. Ther are no messages about errors with DNS. I verified carefully all parameters concerning DHCP, DNS and found nothing wrong. Ping with router and workstations IP is OK, but no IP from Internet can be reached. The problem with disappearing DHCP did not disappeared. Sorry, but where to find what is wrong and what check? I think that we will have to establish "a hot line" if problems with SBS will occur
with such intensity.

Jerzy


----- Original Message -----

Crina Li wrote:
Hi Jerzy,

Thank you for posting in SBS newsgroup.

Based on your description, I understand the issue to be: DHCP will stop work sometimes on SBS. If I have misunderstood your issue, please let me know.

To narrow down the problem, would you please help me collect the following information?

1. Do you have DHCP enabled on the router? 2. Do you have other server in the SBS LAN?
3. Is there any related error in Event log on SBS?
4. What is the detailed error message when the DHCP stop working and you enable the DHCP again on SBS?
5. Please check the configuration on SBS server and client computer as following:

On SBS server:

External NIC:
IP: assigned by your ISP or your hardware router
Gateway: your ISP or your Hardware router IP
DNS: SBS INTERNAL NIC IP as the only entry

Internal NIC:
IP: Fixed IP
Gateway: None
DNS: SBS INTERNAL NIC IP as the only entry

In the DNS console (dnsmgmt.msc), right click your ServerName and click properties. In the Forwarders tab, your ISP DNS server IP should be inputted there.

On workstation inside your SBS local subnet

IP: Assigned by DHCP on SBS
Gateway: SBS internal NIC IP
DNS: SBS INTERNAL NIC IP as the only entry

If there is any error configuration, please correct it. If the situation occurs, please rerun CEICW to see how thing goes:

1. On the SBS 2003 Server open the Server Management console. Go to Standard Management\To Do List.
2. Click the "Connect to the Internet" link.
3. Choose not to change the connection type and click Next. On the Firewall page, select "Enable firewall" and click Next.
4. On the "Services Configuration" page, select all the items and then click Next.
5. On the "Web Services Configuration" page, make sure "Allow access to the entire Web site from the Internet" is selected. If you select "Allow access to only the following Web site services from the Internet", make sure the web sites you want to publish are selected. Click Next.
6. On the "Web Server Certificate" page, choose to create a new Web server certificate and then type the public FQDN of SBS. 7. Go through the remaining steps.

You may also refer to the following KB article:

825763 How to configure Internet access in Windows Small Business Server 2003
http://support.microsoft.com/?id=825763

I appreciate your time and look forward to hearing from you.

Best regards,

Crina Li (MSFT)

Microsoft CSS Online Newsgroup Support

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--------------------
| Date: Wed, 13 Sep 2006 09:17:12 +0200
| From: Jerzy <jksoft@xxxxx>
| User-Agent: Mozilla Thunderbird 1.0.6 (Windows/20050716)
| X-Accept-Language: en-us, en
| MIME-Version: 1.0
| Subject: Problem with DHCP server...
| Content-Type: text/plain; charset=ISO-8859-2; format=flowed
| Content-Transfer-Encoding: 7bit
| X-Antivirus: avast! (VPS 0637-0, 2006-09-11), Outbound message
| X-Antivirus-Status: Clean
| Message-ID: <u#tscSw1GHA.2176@xxxxxxxxxxxxxxxxxxxx>
| Newsgroups: microsoft.public.windows.server.sbs
| NNTP-Posting-Host: aia112.neoplus.adsl.tpnet.pl 83.25.208.112
| Lines: 1 | Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGP01.phx.gbl!TK2MSFTNGP04.phx.gbl
| Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windows.server.sbs:297163
| X-Tomcat-NG: microsoft.public.windows.server.sbs
| | Hi all,
| | I use SBS2003 Premium. The server was setup a month ago, and for a month | had worked properly. I use HP Proliant with two NICs, one for LAN and | one for WAN. DHCP and DNS are launched on SBS. But a few days ago | strange problems with connections to the server ocurred. Step by step | workstations has been disconnected from the server. As I observed the | DHCP server on SBS2003 stop to work. When I try to launch it handly, I | get a message that it cannot be done because the proper service is not | installed. But If I switch off the server from the LAN (from the main | switch) and restart it, the DHCP start to work. The next day problems | come back. I have no idea what to do, what verify. Please, don't | hesitate to suggest me what to do. Thanks in advance.
| | Jerzy
|

.

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