SBC 1000/2000 4.1.x : Working with Branch Survivability

The Branch Survivability feature monitors multiple network links between a branch office and Headquarters. I employs the preferred/low-cost link to provide automatic fail-over to operational links


The Branch Survivability module monitors the primary WAN connection, when it detects a failure and if that failure persists for predetermined amount of time, it makes the necessary changes in the routing table to route all IP packets through the 3G/4G network. Additionally, it sends a notification to the IPSec module when fail-over event occurs, so that IPSec can create secure tunnel if necessary. It also sends a notification to the Lync ASM module at the HQ site to modify the bandwidth control on the Lync server(s).

Configuring 3G4G Failover
Managing Link Monitor Configuration Tables
Managing Lync CAC Profiles