1. Essentials Guide
  2. The Session Load Balancer and Route Manager
  3. Functional Overview
  4. Physical Deployment
  5. Active-Active Redundancy

Active-Active Redundancy

Multiple devices performing the SLRM function can, and should, reside in parallel to provide redundant SLRM operation. The SLRM function is not dialog stateful, which allows active-active redundancy. Typically, the SLRM configuration on each redundant device is exactly the same.

This image depicts the SLRM load balancing traffic from P-CSCFs to the OCCSM.

Configuring the devices running SLRM as Session Agents within Session Agent Groups on Oracle SBCs is one method of establishing redundant connectivity. A more generic means of establishing redundant connectivity could be to use DNS techniques, such as dynamic or round-robin DNS, as the means for the P-CSCFs to reach redundant SLRMs.