Can an S series switch running RSTP be connected to another switch running STP

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For S (except the S1700) series switches, STP protocols include the STP, RSTP, and MSTP protocols. These protocols are forward compatible and support device interconnection to a certain extent. The following describes the interconnection effects:
1. When an STP device connects to an RSTP device and the RSTP device connects to a port of the STP device, the RSTP mode automatically switches to STP to implement slow convergence.
2. When an RSTP device connects to an MSTP device, the CIST (instance 0) can be used to connect both devices. The connection ports are inter-AS ports.
3. When an MSTP device connects to an STP device and the MSTP device connects to a port of the STP device, the MSTP mode automatically switches to STP to implement slow convergence.
Note:
When a port whose mode switches to another mode is reconnected to another device, run the stp mcheck command to restore the original mode of the port.

Other related questions:
Must STP be disabled on interfaces running RRPP on an S series switch
For S series switches (except the S1700), RRPP and STP cannot be configured on the same interface simultaneously. STP is enabled on all interfaces by default. Therefore, before creating an RRPP ring, disable STP on the interfaces to be added to the RRPP ring.

Can services be run on ports of the MPU on S series switches
Ports on the MPU cannot be used as service ports.

Does STP need to be configured when an interface on an S series switch that functions as an L3 interface is connected to another device
If an interface of an S series switch (except the S1700) functions as an L3 interface, disable STP on the interface. If the interface connects to terminals, configure the interface as an edge interface. To use this interface as an L2 interface after STP is disabled on this interface, enable STP again. Otherwise, loops cannot be prevented.

How does an S series switch running STP update its forwarding table
In STP converge normal mode, an S (except the S1700) series switch deletes MAC address entries or ages ARP entries. In STP converge fast mode, the switch deletes both MAC address and ARP entries. Note: By default, S series switches (except the S1700) running V100R006 and later versions work in STP converge normal mode, and E series switches work in STP converge normal mode.

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