RSTP port types

1. Backup port :- It acts as a backup for the path provided by a designated port towards the leaves of the spanning tree.

2. Disabled port :- It has no role within the operation of the spanning tree.

3. Root Port:- It provides the best path ( lowest cost) when the device forwards packets to the root bridge:-

4. Root Port:- It offers a backup path towards the root bridge to the path provided by the current root port.

5. Designated port :- IT connects to the device that has the lowest path cost when forwarding packets from that LAN to the root bridge.