A BIG-IP Administrator finds the following log entry: tnm tmm[7141]: 011e0002:4: sweeper_update: aggressive mode activated.

Comprehensive and Detailed Explanation From BIG-IP Administration Control Plane Administration documents:This log message indicates that the system is low on memory and has activated 'Aggressive Mode' to reclaim resources by closing old connections37. In an HA environment, one way to ensure state stability during memory pressure is to manage how connection data is handled38. While the document suggests D, procedural mitigation for 'Aggressive Mode' often involves reviewing resource provisioning or optimizing connection idle timeouts to reduce memory footprint39.