F5CABR: F5 Certified Administrator, BIG-IP Recertification

The virtual server is configured with a Default Persistence Profile of source_addr, which persists client connections to the same pool member based solely on the client's source IP address. Because all employees connect through a single proxy server with one public IP (104.219.110.168), every user's traffic appears to come from that same IP, causing BIG-IP to send all of them to a single pool member instead of distributing load across the pool — this creates a bottleneck and degraded performance. Switching the Default Persistence Profile to a cookie-based persistence profile resolves this because cookie persistence identifies and tracks individual clients using a unique HTTP cookie rather than the shared source IP, allowing BIG-IP to properly distribute and load-balance traffic among all available pool members even when many users share the same proxy IP address.