1. Field of Invention
The present disclosure relates to an electronic system and a routing method. More particularly, the present disclosure relates to a network system and a routing method.
2. Description of Related Art
With advances in information technology, various kinds of network systems are widely used in our daily lives. Examples of such network systems include local area network systems, internet network systems, and data center network systems.
Typically, a network system includes a plurality of nodes (e.g., switches). Upon reception of a packet, a node determines whether a characteristic of the received packet matches requirements of packet forwarding rules in the node itself, and forwards the received packet according to the packet forwarding rules. However, the packet forwarding rules may become invalid due to errors or due to having surpassed their effective dates. Therefore, when a node receives a packet, even if the characteristics of the packet are identical to a packet the node forwarded before, the node still has to plan a transmission path again to forward the received packet. As a result, the efficiency of the network system is decreased.
Thus, there is a need to redesign network systems to avoid unnecessary planning of transmission paths that would lead to decreasing the efficiency of the network systems.