What is redundant routing?

Redundant routing is a network design strategy that involves setting up multiple paths for data to travel through in case one path fails or becomes congested. This can help improve network reliability, availability, and performance by providing alternative routes for data to reach its destination.

In redundant routing, routers are typically configured to have multiple equal-cost paths to reach the same destination, allowing for load balancing and failover in case one path becomes unavailable. This can be achieved through techniques such as using multiple routing protocols, setting up virtual routing and forwarding (VRF) instances, or implementing link aggregation.

Overall, redundant routing helps ensure that network traffic can continue to flow smoothly even in the event of a network failure or congestion. It is commonly used in mission-critical networks that require high availability and resilience.