Stp Mode - Huawei Quidway S8500 Series Command Manual

Command Manual – STP
Quidway S8500 Series Routing Switches
<Quidway>system-view
System View: return to User View with Ctrl+Z.
[Quidway] interface Ethernet2/1/1
[Quidway-Ethernet2/1/1] stp mcheck

1.1.29 stp mode

Syntax
stp mode { stp | mstp }
undo stp mode
View
System view
Parameter
stp: Configures the MSTP operation mode as STP-compatible.
mstp: Configures the MSTP operation mode as MSTP.
Description
Use the stp mode command to configure MSTP operation mode of the switch.
Use the undo stp mode command to restore the default MSTP operation mode.
By default, switch work in MSTP mode
MSTP and RSTP are compatible and they can recognize the packets of each other.
However, STP cannot recognize MSTP packets. To implement the compatibility, MSTP
provides two operation modes, STP-compatible mode and MSTP mode. In
STP-compatible mode, the switch sends STP BPDU packets via every port. In MSTP
mode, the switch ports send MSTP BPDU packets. When detecting it is connected to
an STP switch (it receives config BPDU packets from the STP switch), the switch port
enters automatically STP-compatible mode and sends config BPDU packets from the
STP switch. The port enters MSTP mode only when receiving MSTP BPDU packets
again.
Related command: stp mcheck, stp, stp interface, stp interface mcheck.
Example
# Set MSTP operation mode as STP-compatible.
<Quidway>system-view
System View: return to User View with Ctrl+Z.
[Quidway] stp mode stp
Huawei Technologies Proprietary
1-31
Chapter 1 MSTP Configuration Commands