A BIG-IP Administrator uses backend servers to host multiple services per server.

In this scenario, each backendnode (server)hosts multiple services and is referenced by multiple pools and virtual servers. The goal is to ensure anequal number of total connections per backend server, regardless of how many pool members (services/ports) exist on that server.

According to theBIG-IP Administration: Data Plane Configurationdocumentation:

Least Connections (node)tracks the total number of active connections to anode across all pool members and services.

This algorithm ensures load distribution is balanced at theserver level, not just at the individual service (member) level.

It is specifically recommended when:

Multiple pool members exist on the same backend server

Multiple virtual servers reference the same backend servers

Why the other options are incorrect:

B. Predictive (member)Predictive algorithms are advanced and traffic-pattern based, but they operate at the member level and do not guarantee equal connections per server.

C. Least Connections (member)This balances connections per pool member, which can overload a server hosting multiple members while still appearing “balanced” per member.

D. Predictive (node)Although node-aware, predictive algorithms are less deterministic and not the best choice when strict equality of connections is required.

Correct Resolution:

UsingLeast Connections (node)ensures that each backend server carries an equal connection load across all services and pools.