Error DHCP Windows 2008 R2, DHCP client is not a reserved client

  • Thread starter Thread starter Christoph Jandek
  • Start date Start date
C

Christoph Jandek

Hello,

I cannot add a reservation to a DHCP scope on windows server 2008 R2
Errormessage: The specified DHCP client is not a reserved client.

The DHCP server is authorized in AD and has no problems to offer and renew
leases.

With Windows Server 2003 R2 and Windows Server 2008 (no R2) there is no
problem to reserve clients.

Does anybody know this problem and can help me?

Kind regards,
Christoph
 
Christoph Jandek said:
Hello,

I cannot add a reservation to a DHCP scope on windows server 2008 R2
Errormessage: The specified DHCP client is not a reserved client.

The DHCP server is authorized in AD and has no problems to offer and renew
leases.

With Windows Server 2003 R2 and Windows Server 2008 (no R2) there is no
problem to reserve clients.

Does anybody know this problem and can help me?

Kind regards,
Christoph
Click to expand...


Is the Windows 2008 R2 DHCP server a DC?

Is there an EventID# associated with this error in Event viewer? If so, is
it EventID# 20018? If not, please let us know, as well as if there are other
eventID errors on the DCs.

According to the following, it may not be authorized or the DHCP server is
not joined to the domain.

Error Message:The specified DHCP client is not a reserved client.
Explanation: Stand-alone DHCP servers are not allowed to operate when Active
Directory is operating. ...
http://technet.microsoft.com/en-us/library/cc976339.aspx

--
Ace

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

Please reply back to the newsgroup or forum for collaboration benefit among
responding engineers, and to help others benefit from your resolution.

Ace Fekay, MCT, MCTS Exchange, MCSE, MCSA 2003 & 2000, MCSA Messaging
Microsoft Certified Trainer

For urgent issues, please contact Microsoft PSS directly. Please check
http://support.microsoft.com for regional support phone numbers.
 
The Server running DHCP Server is a Windows Server 2008 R2 DC.
There are no EVents it EventID# 20018 in the LOGs.

DCIAG reports no error.

The DHCP DB was migrated from Windows 2003 using
"netsh dhcp server import c:\w2k3DHCPdb"

The Server is authorized in the AD and it is serving clients. Existing,
migrated reservations are working fine.

Christoph
 
message
It is possible that the migration method, since it has not been officially
released yet, could be the issue.

One of the Microsoft engineers monitoring the Social forums link, did
mention it hasn't been release yet in the following link.

http://social.technet.microsoft.com...n/thread/c3523239-28bf-419e-b266-98ed670b84e2

He did mention the following article Did you use the following article to do
the migration?

How to move a DHCP database from a computer that is running Windows NT
Server 4.0, Windows 2000, or Windows Server 2003 to a computer that is
running Windows Server 2003
http://support.microsoft.com/default.aspx/kb/325473

As a test, if you were to create a new scope, does it still occur?

Ace
 
Very good point - in a new scope, reservations can be added.

For the migration I used this article:
http://support.microsoft.com/kb/962355
How to move a DHCP database from a computer that is running Windows Server
2003 to Windows Server 2008

I'm in contact with MS Support. He mentioned to use the Windows
Server-Migrationtools for Windows Server 2008 R2.
I'll check this, though I have problems installing the tools on Windows 2003
R2 and the process seems not that simple.

Hope I can fix it without doing the migration again.
 
Nach einigen Tests ist mir aufgefallen, dass Reservierungsversuche von IP
Adressen auserhalb des Scope Ranges aber innerhalb des Scope-Subnetzes zu
diesem Fehler führen.

Bis Windows 2008 ist es möglich IP Adressen innerhalb des Scope Subnetzes zu
reservieren, die außerhalb des konfigurierten Scope Ranges liegen.

Mit Windows 2008 R2 führt dies zu der bekannten Fehlermeldung:
The specified DHCP client is not a reserved client.

Dann werde ich eben meinen Scope erweitern und mit mehr exlusions arbeiten
müssen.


Anmerkung:
Die netsh Migration hat funktioniert.
Mit dem Server Migrations Tool ist die Migration auch sehr smart
- siehe
Video, Migrating DHCP using the Windows Server 2008 R2 Migration Tools
http://edge.technet.com/Media/Migrating-DHCP-using-the-Windows-Server-2008-R2-Migration-Tools/

DHCP Server Migration Guide
http://technet.microsoft.com/en-us/library/dd379535(WS.10).aspx

Danke für euer Feedback

Christoph
 
message
Sorry, I am not familiar with this language. Do you have a translation?

Ace
 
Christoph Jandek said:
Very good point - in a new scope, reservations can be added.

For the migration I used this article:
http://support.microsoft.com/kb/962355
How to move a DHCP database from a computer that is running Windows Server
2003 to Windows Server 2008

I'm in contact with MS Support. He mentioned to use the Windows
Server-Migrationtools for Windows Server 2008 R2.
I'll check this, though I have problems installing the tools on Windows
2003
R2 and the process seems not that simple.

Hope I can fix it without doing the migration again.
Click to expand...


I hope so, too! Let us know what PSS has to offer.

Ace
 
Hello Ace Fekay [MCT],

I'll try to translate, i know this language:-)


After some testing i realized, that this error happens if you try to reserve
ip addresses outside the scope range but inside the scope-subnet.

With Windows 2008 it is possible to reserve addresses in a scope that are
outside of the scope range.

This results in windows 2008 R2 in the error message: The specified DHCP
client is not a reserved client.

Then i have to extend my scope and have to work with more exlusions.

Remark:
Migration with netsh has worked.
With the server migration tool it is also smart
- check out

Video, Migrating DHCP using the Windows Server 2008 R2 Migration Tools
http://edge.technet.com/Media/Migrating-DHCP-using-the-Windows-Server-2008-R2-Migration-Tools/

DHCP Server Migration Guide
http://technet.microsoft.com/en-us/library/dd379535(WS.10).aspx

Thank you very much for your feedback.

Best regards

Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.
** Please do NOT email, only reply to Newsgroups
** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm
 
Sorry, I communicated with MS Support in German.

Than you for the translation Meinolf

Kind regards
Christoph

Meinolf Weber said:
Hello Ace Fekay [MCT],

I'll try to translate, i know this language:-)


After some testing i realized, that this error happens if you try to reserve
ip addresses outside the scope range but inside the scope-subnet.

With Windows 2008 it is possible to reserve addresses in a scope that are
outside of the scope range.

This results in windows 2008 R2 in the error message: The specified DHCP
client is not a reserved client.

Then i have to extend my scope and have to work with more exlusions.

Remark:
Migration with netsh has worked.
With the server migration tool it is also smart
- check out

Video, Migrating DHCP using the Windows Server 2008 R2 Migration Tools
http://edge.technet.com/Media/Migrating-DHCP-using-the-Windows-Server-2008-R2-Migration-Tools/

DHCP Server Migration Guide
http://technet.microsoft.com/en-us/library/dd379535(WS.10).aspx

Thank you very much for your feedback.

Best regards

Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.
** Please do NOT email, only reply to Newsgroups
** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm

in message
Sorry, I am not familiar with this language. Do you have a
translation?

Ace
Click to expand...
Click to expand...
 
in message

Thank you for the translation!

So it appears the reservation was outside of the scope, if I understood the
report from PSS?

Ace


Hello Ace Fekay [MCT],

I'll try to translate, i know this language:-)


After some testing i realized, that this error happens if you try to
reserve ip addresses outside the scope range but inside the scope-subnet.

With Windows 2008 it is possible to reserve addresses in a scope that are
outside of the scope range.

This results in windows 2008 R2 in the error message: The specified DHCP
client is not a reserved client.

Then i have to extend my scope and have to work with more exlusions.

Remark:
Migration with netsh has worked.
With the server migration tool it is also smart
- check out

Video, Migrating DHCP using the Windows Server 2008 R2 Migration Tools
http://edge.technet.com/Media/Migrating-DHCP-using-the-Windows-Server-2008-R2-Migration-Tools/

DHCP Server Migration Guide
http://technet.microsoft.com/en-us/library/dd379535(WS.10).aspx

Thank you very much for your feedback.

Best regards

Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and
confers no rights.
** Please do NOT email, only reply to Newsgroups
** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm
in message
Sorry, I am not familiar with this language. Do you have a
translation?

Ace
Click to expand...
Click to expand...
 
The scope 10.1.0.0 has the mask: 255.255.0.0.
We splitted to scope-range as we have two DHCP servers.

Reservations are done on both servers.
So at one DHCP server the Reservations is outside the range but inside the
10.1.0.0 network.

Example:
Server 1 - Scope 10.1.0.0, Range 10.1.1.0 - 10.1.2.255
Server 2 - Scope 10.1.0.0, Range 10.1.3.0 - 10.1.4.255

We add Printerreservations to both server:
IP 10.1.1.5

So this address is outside the range on server 2.
This no longer works with the new installed Windows 2008 R2 Server.
It's no migration issue.

Christoph




Ace Fekay said:
in message

Thank you for the translation!

So it appears the reservation was outside of the scope, if I understood the
report from PSS?

Ace


Hello Ace Fekay [MCT],

I'll try to translate, i know this language:-)


After some testing i realized, that this error happens if you try to
reserve ip addresses outside the scope range but inside the scope-subnet.

With Windows 2008 it is possible to reserve addresses in a scope that are
outside of the scope range.

This results in windows 2008 R2 in the error message: The specified DHCP
client is not a reserved client.

Then i have to extend my scope and have to work with more exlusions.

Remark:
Migration with netsh has worked.
With the server migration tool it is also smart
- check out

Video, Migrating DHCP using the Windows Server 2008 R2 Migration Tools
http://edge.technet.com/Media/Migrating-DHCP-using-the-Windows-Server-2008-R2-Migration-Tools/

DHCP Server Migration Guide
http://technet.microsoft.com/en-us/library/dd379535(WS.10).aspx

Thank you very much for your feedback.

Best regards

Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and
confers no rights.
** Please do NOT email, only reply to Newsgroups
** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm
in message
Sorry, I am not familiar with this language. Do you have a
translation?

Ace

Nach einigen Tests ist mir aufgefallen, dass Reservierungsversuche
von IP Adressen auserhalb des Scope Ranges aber innerhalb des
Scope-Subnetzes zu diesem Fehler führen.

Bis Windows 2008 ist es möglich IP Adressen innerhalb des Scope
Subnetzes
zu
reservieren, die außerhalb des konfigurierten Scope Ranges liegen.
Mit Windows 2008 R2 führt dies zu der bekannten Fehlermeldung: The
specified DHCP client is not a reserved client.

Dann werde ich eben meinen Scope erweitern und mit mehr exlusions
arbeiten müssen.

Anmerkung:
Die netsh Migration hat funktioniert.
Mit dem Server Migrations Tool ist die Migration auch sehr smart
- siehe
Video, Migrating DHCP using the Windows Server 2008 R2 Migration
Tools
http://edge.technet.com/Media/Migrating-DHCP-using-the-Windows-Server
-2008-R2-Migration-Tools/
DHCP Server Migration Guide
http://technet.microsoft.com/en-us/library/dd379535(WS.10).aspx
Danke für euer Feedback

Christoph

:

Very good point - in a new scope, reservations can be added.

For the migration I used this article:
http://support.microsoft.com/kb/962355
How to move a DHCP database from a computer that is running Windows
Server
2003 to Windows Server 2008
I'm in contact with MS Support. He mentioned to use the Windows
Server-Migrationtools for Windows Server 2008 R2.
I'll check this, though I have problems installing the tools on
Windows
2003
R2 and the process seems not that simple.
Hope I can fix it without doing the migration again.

:

"Christoph Jandek" <[email protected]>
wrote in message

It is possible that the migration method, since it has not been
officially
released yet, could be the issue.
One of the Microsoft engineers monitoring the Social forums link,
did mention it hasn't been release yet in the following link.

http://social.technet.microsoft.com/Forums/en-US/winserverMigration
/thread/c3523239-28bf-419e-b266-98ed670b84e2

He did mention the following article Did you use the following
article
to do
the migration?
How to move a DHCP database from a computer that is running Windows
NT Server 4.0, Windows 2000, or Windows Server 2003 to a computer
that is running Windows Server 2003
http://support.microsoft.com/default.aspx/kb/325473

As a test, if you were to create a new scope, does it still occur?

Ace

The Server running DHCP Server is a Windows Server 2008 R2 DC.
There are no EVents it EventID# 20018 in the LOGs.

DCIAG reports no error.

The DHCP DB was migrated from Windows 2003 using
"netsh dhcp server import c:\w2k3DHCPdb"
The Server is authorized in the AD and it is serving clients.
Existing,
migrated reservations are working fine.
Christoph

:

"Christoph Jandek" <[email protected]>
wrote
in
message
Hello,

I cannot add a reservation to a DHCP scope on windows server
2008
R2
Errormessage: The specified DHCP client is not a reserved
client.
The DHCP server is authorized in AD and has no problems to offer
and
renew
leases.
With Windows Server 2003 R2 and Windows Server 2008 (no R2)
there
is no
problem to reserve clients.
Does anybody know this problem and can help me?

Kind regards,
Christoph
Is the Windows 2008 R2 DHCP server a DC?

Is there an EventID# associated with this error in Event viewer?
If
so,
is
it EventID# 20018? If not, please let us know, as well as if
there
are
other
eventID errors on the DCs.
According to the following, it may not be authorized or the DHCP
server
is
not joined to the domain.
Error Message:The specified DHCP client is not a reserved client.
Explanation: Stand-alone DHCP servers are not allowed to operate
when
Active
Directory is operating. ...
http://technet.microsoft.com/en-us/library/cc976339.aspx
-- Ace

This posting is provided "AS-IS" with no warranties or guarantees
and
confers no rights.
Please reply back to the newsgroup or forum for collaboration
benefit
among
responding engineers, and to help others benefit from your
resolution.
Ace Fekay, MCT, MCTS Exchange, MCSE, MCSA 2003 & 2000, MCSA
Messaging
Microsoft Certified Trainer
For urgent issues, please contact Microsoft PSS directly. Please
check
http://support.microsoft.com for regional support phone numbers.
Click to expand...
Click to expand...
Click to expand...
 
Christoph Jandek said:
The scope 10.1.0.0 has the mask: 255.255.0.0.
We splitted to scope-range as we have two DHCP servers.

Reservations are done on both servers.
So at one DHCP server the Reservations is outside the range but inside the
10.1.0.0 network.

Example:
Server 1 - Scope 10.1.0.0, Range 10.1.1.0 - 10.1.2.255
Server 2 - Scope 10.1.0.0, Range 10.1.3.0 - 10.1.4.255

We add Printerreservations to both server:
IP 10.1.1.5

So this address is outside the range on server 2.
This no longer works with the new installed Windows 2008 R2 Server.
It's no migration issue.

Christoph
Click to expand...

I see. I didn't realize there was a split scope. Glad to hear it was
resolved, or at least explained as to what was going on.

Cheers!

Ace
 
I have expirienced the same issue.

After the migration of DHCP to W2k8 R2 a reservation on a splitted scope
will not work.

Seem's to be a change in W2k8 R2. In W2k8 and W2k3 this works.

But I need this functionality also in R2, so I would be glad if Microsoft
will fix this issue.

Regards,
Gerald
 
Gerald Hutter said:
I have expirienced the same issue.

After the migration of DHCP to W2k8 R2 a reservation on a splitted scope
will not work.

Seem's to be a change in W2k8 R2. In W2k8 and W2k3 this works.

But I need this functionality also in R2, so I would be glad if Microsoft
will fix this issue.

Regards,
Gerald
Click to expand...


That I have no control over. Sorry.

Ace
 
I agree, this is something that definately needs to be fixed, ESPECIALLY
since it wasn't an issue in previous versions. It's nice to have a
work-around, but it's pretty darned ridiculous.

Just chiming in, hopefully someone from MS can add this to a to-do list.
 
I totally second this. This is unbelievable! What happened to, "if it ain't
broke, don't fix it". For my company, using split scopes on multiple servers
with the 80/20 rule and segemtation of the subnet addresses for
infratsructure, printers, servers and clients, I HAVE to be able to set
reservations outside the scope on all my servers for that scope. This is a
real bone-headed move by Microsoft and I hope and pray they fix this and
return the functionality we had previously.
 
http://support.microsoft.com/kb/2005980

At the bottom it says reserved IP's can come from Excluded ranges. I have 2
DHCP servers and I split the DHCP across them. I put the same reservation on
both of them, or did with 2003, for printers. I cant now because of this.

So I am going to have to expand the range on both servers then create
exclusions on each for the others range, then I can create reservations.

Hey at least MS did not change the name of "DHCP" to confuse us more:)
 
Back
Top