RSTP needs backwards compatibility with STP switches. Thus Discarding state merges Disabled, Blocking, Listening into one. Ideally if running a complete RSTP topology then discarding becomes practically unneeded due to the explanation below. In STP BPDU will only be sent from root bridge > down, therefore non-root bridges would only forward on BPDUs that are Read More
Tag: STP
Understanding Spanning Tree Protocols – STP, RSTP, MSTP
In brief, the differences between Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), and Multiple Spanning Tree Protocol (MSTP) are as follows: STP: only supports a single instance. RSTP: supports fast convergence and a single instance. MSTP: includes the advantages of RSTP, and supports multiple instances. STP is the short form for Spanning Tree Read More