STP spanning tree protocol
Two switches are connected by two network cables. This is to ensure that if one cable fails, the other cable remains usable.
In this situation, the Spanning Tree Protocol (STP) is used. It elects a root bridge and a non-root bridge, and then blocks the port, creating blocked and non-blocked ports Forwarding Port.
These two 2940 switches are connected by two network cables. See? The switch system has the STP protocol, which selects a root switch.
In summary, the Spanning Tree Protocol aims to reduce the probability of switch failures and ensure more stable network operation.
