Change the IP Address of a Server

To change the IP address settings of a network adapter on the Windows EBS Management Server, Security Server, or Messaging Server, use the Change IP Address Settings Wizard. When you change the IP address settings on one of the servers, the wizard automatically reconfigures your Windows EBS network to maintain connections between the servers. In addition to the IP address settings of the adapter that you choose, the wizard modifies one or more of the following:

  • Settings for the DHCP Server service and the DNS Server service on the Management Server

  • Network settings for Forefront TMG on the Security Server

  • Windows EBS settings in Active Directory Domain Services on the Management Server

The Change IP Address Settings Wizard helps you change IP address settings on the Windows EBS computers and make coordinating changes to services and roles that depend on those settings. The following table documents the changes that are made to Forefront Threat Management Gateway (TMG) system policy rules and network connection property settings. Depending on your network topology, the wizard might not make all of the changes that are necessary for your environment, and you may need to make modifications.

Changes Made To (right)

 

Wizard Running On (below)

Management Server

Security Server (internal connection)

Security Server (external connection)

Messaging Server

Management Server

Network connection properties:

  • IP address

  • Subnet mask

  • Default gateway

  • DNS servers

  • DNS servers (from DHCP)

    Note

    See the note regarding Group Policies for System Center Essentials.

Forefront TMG system policy rules, Network connection properties:

  • DNS servers

 

Network connection properties:

  • DNS servers

Security Server (internal connection)

Network connection properties:

  • Default gateway

  • Default gateway (from DHCP)

Forefront TMG system policy rules, Network connection properties:

  • IP address

  • Subnet mask

  • DNS servers

 

Network connection properties:

  • Default gateway

Security Server (external connection)

 

Forefront TMG system policy rules, Network connection properties:

  • IP address

Network connection properties:

  • IP address

  • Subnet mask

  • Default gateway

  • DNS servers

 

Messaging Server

Network connection properties:

  • DNS servers

  • DNS servers (from DHCP)

Forefront TMG system policy rules, Network connection properties:

  • DNS servers

 

Network connection properties:

  • IP address

  • Subnet mask

  • Default gateway

  • DNS servers

Important

Note the following regarding IP address changes.

  • Do not use native tools in Windows Server 2008 to change the IP address settings of a network adapter on a server for Windows EBS. If you already changed IP address settings manually, restore the previous IP address settings, and then follow the steps in this procedure.

  • Changing the IP address settings on a server for Windows EBS briefly interrupts network connectivity. To minimize the impact to the users on your network, change IP address settings during a scheduled service maintenance period.

  • The Change IP Address Settings Wizard does not update the SCE Managed Computers Group Policy Group Policy object or the System Center Essentials All Computers Policy Group Policy object. You may need to adjust these Group Policy settings to ensure proper network functionality. For more information about modifying Group Policy objects, see the Microsoft Web site (https://go.microsoft.com/fwlink/?LinkID=133100).

  • If you replace a Windows EBS server and you configure the IP address settings manually, you need to use the Active Directory Service Interfaces Editor (ADSI Edit) to record these settings in Active Directory. For more information, see the Microsoft Web site (https://go.microsoft.com/fwlink/?LinkID=125622).

  • If you move the Security Server to a different subnet, do the following on the Security Server:

    • Delete existing network routes to subnets of the Management Server and the Messaging Server. Use the route print and route delete commands. For more information, see the Microsoft Web site (https://go.microsoft.com/fwlink/?LinkID=133804).

    • Add new persistent static routes to subnets of the Management Server and the Messaging Server. Use the route add –p command.

  • If you move the Management Server and the Messaging Server to a different subnet, do the following on the Security Server:

    • If no Windows EBS servers exist on the subnet that you are moving from, delete the existing network routes to the subnet you are moving from. Use the route delete command.

    • If this is the first Windows EBS server on the subnet that you are moving to, add a persistent static route to the subnet you are moving to. Use the route add –p command.

To change the IP address settings of a network adapter

  1. Log on to the Management Server, Security Server, or Messaging Server with an account that is a member of the Domain Admins group.

  2. Click Start, point to All Programs, click Windows Essential Business Server, click Tools, and then click Change IP Address Settings. The Change IP Address Settings Wizard appears.

  3. On the Before you begin page, read the instructions, and then do one of the following:

    • If you are running the wizard on the Management Server or the Messaging Server: Click Check to verify the connections from the server to the other two servers for Windows EBS.

    • If you are running the wizard on the Security Server, click Next and then:

      1. On the Choose a network adapter page, choose the internal network adapter (which connects to your LAN) or the external network adapter.

      2. Click Check to test the connections from the server to the other two servers for Windows EBS.

  4. On the Check connectivity page, verify the connections from the network adapter to the other servers for Windows EBS.

  5. On the Choose IP address settings page, do one of the following:

    • If you are changing the IP address settings of the external adapter on the Security Server, and you want to use the DHCP Server service to configure the IP address settings automatically, click Use DHCP to automatically configure the IP address settings. Then click Change.

    • If you are changing the IP address settings of the external adapter on the Security Server but you want to configure the IP address settings manually, click Manually configure the IP address settings. Then type the new IPv4 settings for the network adapter and click Change.

    • If you are changing the IP address settings of an internal adapter on one of the servers for Windows EBS, type the new IPv4 settings for the network adapter and then click Change.

  6. The Progress of IP address change page displays the tasks that are being performed to change the IP address settings.

  7. On the Finish page, click Close.

    Important

    The new IP address setting may affect the connectivity of other computers and devices in your domain, including client computers. If you use the DHCP Server service for dynamic addressing, renew the IP configurations of these computers and devices to update them with the latest settings. For example, you can run the following command on these computers: ipconfig /renew.