FreeSBC 1+1 Configuration

FreeSBC 1+1 requires a second hardware unit/instance to provide high availability and redundancy support in active/standby configuration mode. For virtual machines set up, this can be a second instance on the system, while bare metal setup requires a separate hardware unit, that acting as the secondary unit ideally with the same resource as the primary unit to provide same performance during active/standby failover. The secondary FreeSBC unit must have the same network devices configuration as the primary FreeSBC unit.

FreeSBC 1+1 requires a minimum of three networks for initial configuration. The first network will be used as a local management interface to access the instance using the web portal (HTTP/HTTPS) and SSH access. The second network will transport the actual incoming and outgoing VoIP streams (signaling and media) that the FreeSBC will process. The third network will be used as a control interface connecting to another host in FreeSBC 1+1 configuration for control purposes.

Please check the following link for more details; FreeSBC:1+1 Configuration