What is the purpose of a GRE tunnel in the ZTE?

The purpose of a GRE (Generic Routing Encapsulation) tunnel primarily focuses on enabling the encapsulation of a wide variety of network protocols. In the context of Zscaler and digital transformation, GRE tunnels facilitate the encapsulation of traffic, which allows for efficient management and routing of data packets across the network. This serves to optimize load balancing by directing traffic over different pathways based on conditions such as network congestion or overall demand, thereby enhancing performance and reliability.

Using a GRE tunnel can help distribute user traffic effectively among multiple destinations or services, ensuring that no single point of the network becomes overwhelmed. While aspects such as enhancing encryption protocols, ensuring zero-trust security, or reducing operational costs are integral to a comprehensive security and networking strategy, the specific role of a GRE tunnel aligns most closely with managing and balancing traffic effectively within the network infrastructure.