This article describes the steps that have to be performed prior the installation of the ORS on a server with several network cards.

Prerequisites

Please make sure that the following criteria are met before the installation of ORS is started:

Hostname of the server with more network interfaces is resolved as the IP address dedicated for the ORS (i.e. hostname is mapped to the correct NIC).
All CML nodes where this ORS will be connected to must be able to resolve this hostname correctly.
All ORSes which are/will be members of near roaming group needs to be able to resolve this hostname correctly.
The interface bound to the IP address dedicated for ORS must be configured as the first active network interface in the list of available adapters and bindings.
- see the description below for the basic instructions how to verify this step
- additional information about this step can be found at http://technet.microsoft.com/en-us/library/cc732472.aspx if needed

How to verify that adapter with IP address dedicated for ORS is first in the list of available adapters

Step 1 - Find the adapter that uses IP address dedicated for ORS

This section describes the way how to identify the network adapter which uses the IP address dedicated for ORS.

1

Log in to server and Open command prompt (e.g. Start => Run => services.msc)

2

Enter ipconfig command in the command prompt and press Enter. images/download/attachments/21955757/02.PNG

3

Find which adapter is configured to use the IP address dedicated for ORS.

Example: If the needed IP address is mentioned in "Ethernet adapter Local Area Connection" section, the Local Area Connection is the connection we need.

Step 2a - Verify the order of network interfaces and modify it if needed - latest Windows

This section describes steps for verification and modification of order in which the network interfaces are configured for Windows Server 2016 and Windows 10.

1

Start PowerShell and display properties of available network interfaces using this command:

Get-NetIPInterface -AddressFamily IPv4 -InterfaceAlias "*"

2

Verify that the adapter with the IP address dedicated for ORS has the lowest Interface Metric assigned

3

If the adapter with the IP address dedicated for ORS does not have the lowest Interface Metric assigned, use the following command to change it:

Set-NetIPInterface -InterfaceAlias "<your_ORS_interface_name>" -InterfaceMetric 1

Increase Interface Metric for the remaining adapters using similar command if needed.

Step 2b - Verify the order of network interfaces and modify it if needed - older Windows

This section describes steps for verification and modification of order in which the network interfaces are configured for older version of Windows (prior Windows Server 2016 and Windows 10).

1	Open Control Panel -> Network and Sharing Center -> Change adapter settings
2	Press the Alt key on your keyboard and choose Advanced -> Advanced Settings...
3	Verify that the connection with the IP address dedicated for ORS is set as the first one in the Connections section
4	If the connection with the IP address dedicated for ORS is not listed as the first on the top of the list, use the arrow up or arrow down buttons to change the order and save the settings using OK button.