In a network of LANs connected by bridges, packets are sent from one L...
Explanation:
Bridge Routing in LANs:
In a network of LANs connected by bridges, packets are sent from one LAN to another through intermediate bridges. Since more than one path may exist between two LANs, packets may have to be routed through multiple bridges. The process of moving packets across bridges is called bridge routing.
Loops in Bridge Routing:
One of the main challenges in bridge routing is the possibility of loops in the routing paths. Loops occur when packets are forwarded through multiple bridges and end up returning to the same bridge where they originated. These loops can cause network congestion, packet loss, and even network failure.
Spanning Tree Algorithm:
To avoid loops in bridge routing, the spanning tree algorithm is used. The spanning tree algorithm creates a tree-like structure that spans all the bridges in the network, ensuring that there are no loops in the routing paths.
Working of Spanning Tree Algorithm:
The spanning tree algorithm works by selecting a root bridge and then disabling all the redundant paths that would create loops. The algorithm then creates a tree-like structure that connects all the bridges in the network in such a way that there is only one path between any two bridges.
Benefits of Spanning Tree Algorithm:
The spanning tree algorithm provides several benefits for bridge routing, including:
- Loop prevention: The algorithm prevents loops in the routing paths, which can cause network congestion and failure.
- Fault tolerance: The algorithm provides fault tolerance by automatically rerouting packets through alternative paths in case of bridge or link failure.
- Efficient routing: The algorithm ensures that packets are routed through the shortest possible path between any two bridges, minimizing network congestion and reducing packet loss.
Conclusion:
In conclusion, the spanning tree algorithm is used for bridge routing to prevent loops in the routing paths and provide efficient and fault-tolerant routing between LANs connected by bridges.