Configuring duplex Communication Manager deployed on Microsoft Azure

Last Updated : Jun 10, 2026 |

Before you begin

  1. You must install the Communication Manager instances Duplex CM1 and Duplex CM2 for Duplex configuration.

  2. Keep the following information ready:

    • Three IP addresses for CM1, CM2, and Alias IP. Ensure that all IP addresses belong to the same network.

    • Two more IP addresses in a different network to communicate between duplex CM1 and duplex CM2.

Procedure

  1. Log in to Duplex CM1 System Management Interface as a Privileged user.
  2. Navigate to Server Configuration > Network Configuration.
  3. On the Network Configuration page, do the following:

    1. In CM1, under Server ID, enter a number.

      Note:

      You should not enter the same number in CM2.

    2. In eth0, under IP configuration, enter the IPv4 Address and Subnet Mask of CM1. This is the same IP address that is used when deploying CM1.

    3. Under Alias IP, enter the IP address to access the Duplex Communication Manager.

    4. In eth1, enter the IP address that belongs to a different network.

  4. Log in to Duplex CM2 System Management Interface as a Privileged user.
  5. Navigate to Server Configuration > Network Configuration.
  6. On the Network Configuration page, do the following:

    1. In CM2, under Server ID, enter a number.

      Note:

      You should not enter the same number that you entered in CM1.

    2. In eth0, under IP configuration, enter the IPv4 Address and Subnet Mask of CM2. This is the same IP address that is used when deploying CM2.

    3. Under Alias IP, enter the IP address to access the Duplex Communication Manager. The Alias IP must be the same in CM1 and CM2.

  7. In eth1, enter the IP address that belongs to a different network. The IPv4 address you enter in eth1 for CM2 must be different from the IPv4 address used in eth1 in CM1.
  8. Navigate to Server Configuration > Duplication Parameters page and do the following:

    1. For CM1 configuration, do the following steps:

      • In Hostname, enter the hostname of CM2.

      • In Server ID, enter the Server ID of CM2.

      • In Corporate LAN/PE IP, enter the IP address of CM2. This IP address is the same IP address used to deploy CM2.

      • In Duplication IP, enter the IP address that you entered in CM2 under the Network Configuration page in the eth1 IP configuration field.

      • In IP address for PE health check, enter the Gateway IP address. This IP address is the same for CM1 and CM2.

    2. For CM2 configuration, do the following steps:

      • In Hostname, enter the hostname of CM1.

      • In Server ID, enter the Server ID of CM1.

      • In Corporate LAN/PE IP, enter the IP address of CM1. This IP address is the same IP address that is used to deploy CM1.

      • In Duplication IP, enter the IP address that you entered in CM1 under the Network Configuration page in the eth1 IP configuration field.

      • In IP address for PE health check, enter the Gateway IP address. This IP address is the same for CM1 and CM2.

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