Which method improves Internet egress reliability for enterprises?

Utilizing multiple links to connect to different carrier networks is the most effective method for improving Internet egress reliability for enterprises. This approach creates redundancy, which is crucial for maintaining continuous connectivity in the event that one link or carrier experiences a failure or significant disruption. By having multiple connections to different networks, if one link goes down, the enterprise can still route traffic through an alternative link, ensuring uninterrupted service.

Moreover, this strategy allows for load balancing, which can efficiently distribute traffic across the available links, leading to better performance and enhanced bandwidth utilization. It also provides the organization with greater flexibility in selecting carriers based on performance, cost, and service quality.

Connecting via a single link introduces a single point of failure, which jeopardizes reliability. Restricting traffic to local networks eliminates the possibility of accessing external resources, which may not be a viable option for most enterprises. Implementing a fixed routing protocol may not adapt well to dynamic network conditions and could lead to suboptimal routing during changes or failures in the network.