Configuring SIP core redundancy

Last Updated : Aug 17, 2023 |

About this task

You can configure the Remote Worker solution with multiple core Session Manager instances for added redundancy and resiliency of the Session Manager connection from the endpoint device.

For configuring the core redundancy solution, perform the following:

  1. Configure multiple external facing interfaces, such as reference point A1 and reference point A2, for each Session Border Controller.

  2. Associate the reference point A1, A2 with distinct Session Manager instances (SM1 and SM2 with reference point C1 and C2 respectively) to enable the registered endpoints to failover in the case of a loss of connection to Session Manager.

  3. Configure the SIP Private Address (reference point B1 and reference point B2) for Session Border Controller.

The remote endpoint simultaneously registers with:

  • Core Session Manager (SM1) through reference point A1

  • Core Session Manager (SM2) through reference point A2

Session Border Controller in the Remote Worker configuration proxies addresses in both directions. Session Manager interprets all communication, from remote endpoints that traverse Session Border Controller, as having a Session Border Controller address (reference point B1 or B2). The remote endpoints interpret Session Manager as having the public address of Session Border Controller (reference point A1 or A2).

Where,

  • SIP Proxy Public IP Address (reference point A) and SIP Proxy Public FQDN (reference point A) are the Public IP address and Public FQDN of the enterprise Session Border Controller.

  • Session Manager (reference point C) is the IP address of the selected Session Manager instance.

  • SIP Private Address (reference point B) is the Private IP address of the enterprise Session Border Controller.

When SM1 fails or connection to SM1 is lost, the registered SM2 instance can serve the registered endpoints.

Procedure

  1. On the System Manager web console, click Elements > Session Manager  > Network Configuration  > Remote Access.
  2. Click New.
  3. Enter the value of SIP Proxy Private IP Address as reference point B1 and reference point B2.
  4. To add a new SIP Proxy mapping with Session Manager, in the SIP Proxy Mapping table, click New and enter the required information.

    This step creates a new row in the SIP Proxy Mapping table where Reference point A (A1) and Reference point C (C1) are mapped. Add a second set of addresses if needed to support dual registration to create a SIP Proxy Mapping for Reference point A (A2) and Reference point C (C2). Both SIP Proxy Public IP addresses must be in the phone settings file.

  5. To add a new SIP Proxy Private IP address, in SIP Proxy Private IP Addresses Table, click New and enter the required information.
  6. Click Commit.