2018-4-16  The Netsh.exe utility in Windows Server 2003 contains two commands that are available for Dynamic Host Configuration Protocol (DHCP): export and import.You can use these commands to selectively export and import DHCP scopes.

1. Microsoft Dhcp Export Reservations With Mac Office
2. Microsoft Dhcp Export Reservations With Mac Free

Let's say that you have two DHCP servers, both serving addresses to different parts of the same scope for resiliency. You would probably want to make sure that reservations are duplicated on both servers. Here is a fairly simple way to copy the reservations.

1. Netsh dhcp server scope dumpdump.txt. Replace with the IP address or the name of the DHCP server that you are copying from. Replace with the IP address of the scope that the reservations are in. In the DHCP console, you will see this in the tree on the left side of the screen.
2. I had difficulty recently with our DHCP reservations, namely i coudnt export the MAC addresses included in the reservation and the mmc was only allowing very limited as I could only export the ip address and the FQDN of the computer owner.

I have tested this on Windows Server 2008 R2. It should be consistent in later versions of Windows.

Please note that you should be able to do this from any workstation as long as you have the appropriate rights. I did it from the servers themselves.

3 Steps total

Step 1: Copy the configuration

On the server you are copying from, run the command:

netsh dhcp server scope dump>dump.txt

Replace with the IP address or the name of the DHCP server that you are copying from.
Replace with the IP address of the scope that the reservations are in. In the DHCP console, you will see this in the tree on the left side of the screen.

This will create a text file (dump.txt) with the entire configuration of the server.

Step 2: Modify the text file

You will find the reservation commands at the bottom of the file in the format:

Dhcp Server Server.domain.com Scope 192.168.0.0 Add reservedip 192.168.0.250 <> 'DeviceName.domain.com' ' 'BOTH'

Copy just these commands to another text file. On each line, replace the server name or IP address with the name or IP address of the destination server. Leave the rest of the line the same.

Step 3: Run the text file

On the destination DHCP server, run the following command:

NETSH exec <>

This will import all of the reservations quickly.

References

• Microsoft DHCP Team BLOG

19 Comments

• Mace
  molan Oct 14, 2013 at 06:20pm

  that's good to know! Thanks for sharing! I am sure I will end up using this

• Mace
  ErikN Oct 23, 2013 at 01:52pm

  I have a split scope configured and was curious about how to do this. Thanks!

• Jalapeno
  perbauer Jun 18, 2014 at 07:31am

  Worked like a charm! Used it for getting reservations of Server 2003 and onto 2012R2. Thanks!

• Poblano
  Danny6547 Jul 28, 2014 at 09:15pm

  Where was this when I was migrating DHCP from 03 to 2012 6 months ago?!?! Works like a champ.

• Anaheim
  treyrowzie Nov 17, 2014 at 07:09am

  Thanks! Great time saver. BTW, the server's IP address work just as well as fully qualified name.

• Pimiento
  WPC Roger Keast Dec 1, 2014 at 10:48pm

  Thanks! This worked really well. One caveat I found - Check mac addresses that start with leading zeros. Not sure what happened on mine, but all my hw addys that started with 00 were truncated. It happened with all my Meraki wireless units and I had a few come back up after power cycles with the wrong IP addresses. Fixing the hw addys in DHCP afterwards was my fix.

• Pimiento
  toddpainter Dec 9, 2014 at 07:22pm

  I just used this, and it worked without any issues. None of my macs started with 00, so I didn't run into that issue.

• Chipotle
  KO3457 Feb 27, 2015 at 05:28pm

  Thanks for the commands. This worked for what I needed.

• Pimiento
  KnaphKnaph Mar 9, 2015 at 11:31am

  Hi Alan,
  Great tip. I used this to expand a range by 'exporting', then editing the 'Add iprange' values. Then I cleared out the old DHCP scope and re-imported the edited file.
  I can see how this would also be a great way to set up a slit scope by changing the same value and saving two different files for 'importing' into different servers.
  Many thanks.
  Steve B

• Sonora
  ichayan Sep 15, 2015 at 08:49am

  Great post, does any one know how this deals if there are duplicates? as some reservations were added on both servers but some are not. Also do we need to include the last lines 'Set Name protection enable' and 'Set DnsConfig'

• Tabasco
  AlanK Sep 15, 2015 at 01:16pm

  It's been a while since I've done this, but if I recall, it will replace duplicates.

• Anaheim
  1337_Geek Dec 28, 2015 at 07:05pm

  Just wanted to mention here as well that if you get the nebulous error 'the command needs a valid scope ip address' you have to run the netsh exec command as an admin and it works properly. At least this was my experience with Win2012 R2

• Serrano
  Joel Porozynski Jun 16, 2016 at 09:44pm

  So on the modified file, do I only keep the reservation lines? Do I need any other parts from above or below the reservations?

• Cayenne
  ManyHats08 Oct 5, 2017 at 01:39pm

  That is great. I did not know that was so easy to accomplish. thank you,

• Serrano
  Cambridgeport90 Oct 13, 2017 at 06:40pm

  There is a new powershell module for this now; Netsh is no longer necessary.

• prev
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Syntax

Description

The Export-DhcpServer cmdlet exports the Dynamic Host Configuration Protocol (DHCP) server service configuration, and optionally lease data, to the specified file.

If you specify the ScopeId or Prefix parameter,only the specified scopes or prefixes and all server level settings are exported.

If you specify neither ScopeId or Prefix, the DHCP server service configuration including all scopes, v4 and v6 and optionally the lease data, is exported.

If you specify the Leases parameter, the lease data is also exported in addition to configuration data.

Examples

Example 1: Export all DHCP configurations

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This example exports all of the DHCP server, DHCPv4 and DHCPv6, configurations including scopes present on the DHCP server service to the specified export file in XML file format.

Example 2: Export the specified scopes

This example exports the scopes 10.10.10.0 and 10.20.20.0 present on the DHCP server service to the specified export file in XML file format.The DHCPv4 server level configuration is also exported to the specified file.

Example 3: Export specified scopes and their leases

This example exports the scopes 10.10.10.0 and 10.20.20.0 present on the DHCP server service to the specified export file in XML file format.This includes the leases present in the specified scopes.The DHCPv4 server level configuration will also be exported to the specified file.

Example 4: Export the specified scopes and DHCPv6 server level configuration

This example exports the specified scopes 2001:4898:7020:1020:: and 2001:4898:7020:1030:: present on the DHCP server service to the specified export file in XML file format.The DHCPv6 server level configuration is also exported to the specified file.

Example 5: Export the specified scopes, their leases, and DHCPv6 server level configuration

This example exports the specified scopes 2001:4898:7020:1020:: and 2001:4898:7020:1030:: present on the DHCP server service to the specified export file in XML file format.This includes the leases present in the specified scopes.The DHCP server level configuration is also exported to the specified file.

Example 6: Export scopes specified in a file

This example exports a list of scopes specified in file named ScopeList.txt to the specified export file in XML file format.The Import-Csv cmdlet returns the objects that contain the scope IDs output and pipes the objects into this cmdlet, which exports the specified scopes.

The file named ScopeList.txt should contain the following format:

ScopeId

10.10.10.0

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20.20.20.0

30.30.30.0

Parameters

Runs the cmdlet in a remote session or on a remote computer.Enter a computer name or a session object, such as the output of a New-CimSession or Get-CimSession cmdlet.The default is the current session on the local computer.

Specifies the DNS name, or IPv4 or IPv6 address, of the target computer that runs the DHCP server service.

Prompts you for confirmation before running the cmdlet.

Specifies the name of the file to which the data will be exported.If the complete file path is not specified, the file is created in the current working directory.If there is an existing file by the same name, an error is returned.

Specifies that, if there is a file that already exists with the specified name, the file is overwritten.

Specifies that IP address leases is also exported.

Specifies one or more subnet prefixes of the IPv6 scopes which are exported.

Specifies the scope identifiers, in IPv4 address format, which are exported.

Shows what would happen if the cmdlet runs. The cmdlet is not run.

Inputs

Microsoft.Management.Infrastructure.CimInstance#root/Microsoft/Windows/DHCP/DhcpServerv4Scope

The Microsoft.Management.Infrastructure.CimInstance object is a wrapper class that displays Windows Management Instrumentation (WMI) objects.The path after the pound sign (#) provides the namespace and class name for the underlying WMI object.

Microsoft.Management.Infrastructure.CimInstance#root/Microsoft/Windows/DHCP/DhcpServerv6Scope

The Microsoft.Management.Infrastructure.CimInstance object is a wrapper class that displays Windows Management Instrumentation (WMI) objects.The path after the pound sign (#) provides the namespace and class name for the underlying WMI object.

Microsoft Dhcp Export Reservations With Mac Office

Outputs

None

Microsoft Dhcp Export Reservations With Mac Free

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