Switches using RSTP and STP can be connected. STP protocols include the STP, RSTP, and MSTP protocols. These protocols support forward compatibility and connection to a certain extent. The following table describes the connection effects.
Scenario | Connection Effect |
An STP device connects to an RSTP device. | RSTP connects to the STP port, and the mode automatically changes to STP to implement slow convergence. |
An RSTP device connects to an MSTP device. | The CIST can be connected. That is, instance 0 can be connected. The connection ports are inter-AS ports. |
An MSTP device connects to an STP device. | MSTP connects to the STP port, and the mode automatically changes to STP to implement slow convergence. |
