In GLBP, what role is elected as the Active Virtual Gateway?

In Gateway Load Balancing Protocol (GLBP), the Active Virtual Gateway (AVG) is a role that coordinates the load balancing and provides default gateway functionality for hosts on the network. The AVG is elected from among the participating routers based on various factors, including priority configurations and their operational status.

The AVG is responsible for distributing traffic across multiple routers (virtual routers), thus allowing for better load management and redundancy. By designating one router as the AVG, GLBP ensures that there is a single point of management for the virtual gateway, which simplifies the routing processes for the attached clients.

Each of the other options represents different roles within GLBP or related protocols but does not serve the same function as the AVG. For instance, the Backup Virtual Gateway and Standby Gateway roles are related to providing redundancy but do not serve as the main coordinating entity; they are positioned to take over if the AVG fails. The Primary Virtual Router is a term more closely associated with Hot Standby Router Protocol (HSRP) than with GLBP. Thus, selecting the Active Virtual Gateway as the correct answer highlights its central role in managing the virtual router setup effectively.