DHCP not serving 2nd scope

Server 2008, I have a 192.168.5.x and 10.x.. when the 5.x fills, it doesn't
start serving 10.x ip's...>????

"Bruce Johnson" <(E-Mail Removed)> wrote in message
news:6457B6FE-116D-4E9F-9DEC-(E-Mail Removed)...
> Server 2008, I have a 192.168.5.x and 10.x.. when the 5.x fills, it
> doesn't
> start serving 10.x ip's...>????

That isn't how it works. If it did, the machines in 192.168.5 would not
be able to talk to the machines in 10.x and vice versa.

What is the IP address of the NIC in the DHCP server? DHCP will allocate
an address in the same IP subnet as the NIC which receives the request.
Machines will only get a 10. IP address if the broadcast is received on a
NIC with a 10. IP address.

If you have multiple segments joined by routers, DHCP relay on the router
will allow the machines in different segments to get the correct IP address
for that segmen/subnet.

The nic of the server has both a 5.x and a 10.x ip on it.. this configuration
worked for years under 2003R2, but just upgraded to 2008 and it stopped
working!

"Bill Grant" wrote:

>
>
> "Bruce Johnson" <(E-Mail Removed)> wrote in message
> news:6457B6FE-116D-4E9F-9DEC-(E-Mail Removed)...
> > Server 2008, I have a 192.168.5.x and 10.x.. when the 5.x fills, it
> > doesn't
> > start serving 10.x ip's...>????
>
> That isn't how it works. If it did, the machines in 192.168.5 would not
> be able to talk to the machines in 10.x and vice versa.
>
> What is the IP address of the NIC in the DHCP server? DHCP will allocate
> an address in the same IP subnet as the NIC which receives the request.
> Machines will only get a 10. IP address if the broadcast is received on a
> NIC with a 10. IP address.
>
> If you have multiple segments joined by routers, DHCP relay on the router
> will allow the machines in different segments to get the correct IP address
> for that segmen/subnet.
>
>

"Bruce Johnson" <(E-Mail Removed)> wrote in message news:5D5F2725-9CEE-494A-9665-(E-Mail Removed)...
> The nic of the server has both a 5.x and a 10.x ip on it.. this configuration
> worked for years under 2003R2, but just upgraded to 2008 and it stopped
> working!

Curious, I can't see how this worked unless you had them superscoped, meaning the subnet mask combined them to be under one big subnet, unless you were using a DHCP agent. What's the subnet mask? Does it encompass both 192.168.5.0 and 192.168.10.0 ranges?

Also, as Bill said, I can't see how two machiens on the same wired segment with one machine with an IP of say, 192.168.5.36, and another one on the same wired segment has an IP of 192.168.10.88 would be able to communicate if they were given an IP configuration with a /24 subnet from this DHCP server, unlesss of course they would have a /22 subnet that would encompass them under one large subnet, otherwise they would need a router to be able to route traffic back and forth to them.

Maybe it's something I am not immediately seeing, possibly based on the briefness of your post that doesn't have information on your design, the server setup, how many NICs, how subnets is it conneted to, etc. Can you eleborate on your network design to get a better understanding, please? Maybe that will help us understand why it is not working for you.

--
Ace

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSA Messaging, MCT
Microsoft Certified Trainer
(E-Mail Removed)

For urgent issues, you may want to contact Microsoft PSS directly. Please
check http://support.microsoft.com for regional support phone numbers.

"Efficiency is doing things right; effectiveness is doing the right things." - Peter F. Drucker
http://twitter.com/acefekay

The superscope cured it. Thanks.

"Ace Fekay [Microsoft Certified Trainer]" wrote:

> "Bruce Johnson" <(E-Mail Removed)> wrote in message news:5D5F2725-9CEE-494A-9665-(E-Mail Removed)...
> > The nic of the server has both a 5.x and a 10.x ip on it.. this configuration
> > worked for years under 2003R2, but just upgraded to 2008 and it stopped
> > working!
>
> Curious, I can't see how this worked unless you had them superscoped, meaning the subnet mask combined them to be under one big subnet, unless you were using a DHCP agent. What's the subnet mask? Does it encompass both 192.168.5.0 and 192.168.10.0 ranges?
>
> Also, as Bill said, I can't see how two machiens on the same wired segment with one machine with an IP of say, 192.168.5.36, and another one on the same wired segment has an IP of 192.168.10.88 would be able to communicate if they were given an IP configuration with a /24 subnet from this DHCP server, unlesss of course they would have a /22 subnet that would encompass them under one large subnet, otherwise they would need a router to be able to route traffic back and forth to them.
>
> Maybe it's something I am not immediately seeing, possibly based on the briefness of your post that doesn't have information on your design, the server setup, how many NICs, how subnets is it conneted to, etc. Can you eleborate on your network design to get a better understanding, please? Maybe that will help us understand why it is not working for you.
>
> --
> Ace
>
> This posting is provided "AS-IS" with no warranties or guarantees and
> confers no rights.
>
> Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSA Messaging, MCT
> Microsoft Certified Trainer
> (E-Mail Removed)
>
> For urgent issues, you may want to contact Microsoft PSS directly. Please
> check http://support.microsoft.com for regional support phone numbers.
>
> "Efficiency is doing things right; effectiveness is doing the right things." - Peter F. Drucker
> http://twitter.com/acefekay
>
>
>
>
>

"Bruce Johnson" <(E-Mail Removed)> wrote in message news047536F-7CAB-4E32-8DE3-(E-Mail Removed)...
> The superscope cured it. Thanks.


Ahh, I had a feeling it was based on the mask.

I recommend to keep the subnets a little closer, such as 192.168.5.0, 192.168.6.0, 192.168.7.0, etc, instead of using two widely split subnets. This will help with a mask's range, otherwise you have to increase the mask to encompass the two.

Glad I could help.

Ace