asked on

SBS 2008 IP Address issue

I just installed SBS 2008 fresh and clean on its own domain. I ran the Internet Connection wizard and can access the internet fine. In our network we like to have the network equipment on their own set of IP addresses and have the PC's and every thing else assigned by dhcp. The Network equipment is on a 10.1.0.x 255.255.0.0 IP and the PC's are on 10.1.1.x 255.255.0.0 DHCP scope. I can get the SBS 2008 server to hand out DHCP leases but I cant get the PC's that are on the DHCP leases to get to the server, or even ping the server. I have even disabled the SBS 2008 server firewall and that didnt help anything. Any ideas?

SysExpert

1) Disable IPv6 if enabled

2) Is the DHCP service running ?

3) Anything in the event logs ?

I hope this helps !

benkolb

ASKER

I tried disabling IPv6 from the registry, DHCP is running and the event logs look normal.

benkolb

ASKER

Still having the same problems

tigermatt

Hi there,

Could you please provide me with an ipconfig /all output sample from one workstation and the server? Just post it into a usual EE comment, and once we have that information, we can proceed to assist you.

Cheers,

-tigermatt

benkolb

ASKER

This is the servers output. If it means anything, this server is hosted on ESX server 3.5 with all of the latest updates.

Windows IP Configuration

Host Name . . . . . . . . . . . . : TEAMSTS-DC-01
Primary Dns Suffix . . . . . . . : teamsts.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : teamsts.local

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network Connection
Physical Address. . . . . . . . . : 00-0C-29-CA-C7-1A
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 10.1.0.15(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.1.0.1
DNS Servers . . . . . . . . . . . : 10.1.0.15
Primary WINS Server . . . . . . . : 10.1.0.15
NetBIOS over Tcpip. . . . . . . . : Enabled

benkolb

ASKER

Client PC

Windows IP Configuration

Host Name . . . . . . . . . . . . : TEST-001
Primary Dns Suffix . . . . . . . : teamsts.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : teamsts.local
teamsts.local

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : teamsts.local
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network Connect
ion
Physical Address. . . . . . . . . : 00-0B-DB-76-C7-36
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 10.1.1.28
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . : 10.1.0.1
DHCP Server . . . . . . . . . . . : 10.1.0.15
DNS Servers . . . . . . . . . . . : 10.1.0.15
Primary WINS Server . . . . . . . : 10.1.0.15
Lease Obtained. . . . . . . . . . : Tuesday, November 18, 2008 12:49:42
PM
Lease Expires . . . . . . . . . . : Wednesday, November 26, 2008 12:49:4
2 PM

tigermatt

I think I've got it. I thought that might be the issue, but wanted to be sure with the appropriate data before mentioning it!

The server's subnet mask is 255.255.255.0, whereas all the workstations are running on 255.255.0.0. Variable Length Subnet Masking means you can do this with differring subnet masks to some extent, but I'd say those differring subnet masks are causing all your issues. If you change the server's IPv4 mask to 255.255.0.0, then try pinging again from a workstation, see if you get anywhere.

Thanks,

-Matt
-tigermatt

tigermatt

I just noticed this is an SBS 2008. You'll want to use the appropriate SBS 2008 wizards (I've not seen SBS 2008 yet, so not sure of the exact names) to change the subnet mask configuration, rather than change it manually. In SBS 2003, it was the 'Change IP Address Wizard' in Internet & Email.

-tigermatt

benkolb

ASKER

Does anyone know how to access the Change IP Address wizard in SBS 2008?

benkolb

ASKER

Or has any one found a workaround for the issue?

tigermatt

I'm sure it's there somewhere, but for now, I guess you can change it manually on the NIC. Changing that setting manually shouldn't affect anything.

-Matt

benkolb

ASKER

I tried just changing the subnet mask and then ran the "fix my network" wizard and it said that SBS 2008 must have a class C subnet mask, although i have read otherwise. Any other ideas?

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tigermatt

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benkolb

ASKER

Anyone else find a solution to this other than already provided???

tigermatt

What's up with the VLSM approach?