330 CHAPTER 10: USING RSTP COMMANDS
Parameter
None
Description
If the network is unstable, even when the bridge running STP on the segment is
removed, the corresponding port will still work in the STP compatible mode.
Use the stp mcheck command to force the port to work in RSTP mode.
If there is any bridge running STP on the segment connected to the current
Ethernet port, the port will Switch to run RSTP in STP compatible mode. If the
network is rather stable, even when the bridge running STP on the segment is
removed, the corresponding port will still work in the STP compatible mode. In this
case, you can use this command to force the port to work in RSTP mode. In RSTP
mode, when the port receives an STP packet, it will transition to the STP
compatible mode.
The configuration can only be performed when the bridge runs in RSTP mode. If
the bridge is configured to work in STP compatible mode, the command will not
make any sense.
Related command: stp mode.
Example
To set the port GigabitEthernet1/0/1 to work in RSTP mode, enter the following:
<SW5500>system-view
System View: return to User View with Ctrl+Z.
[SW5500]interface GigabitEthernet1/0/1
[SW5500-GigabitEthernet1/0/1]stp mcheck
stp mode Syntax
stp mode { stp | rstp }
undo stp mode
View
System view
Parameter
stp: Specifies to run Spanning Tree in STP compatible mode.
rstp: Specifies to run Spanning Tree in RSTP mode.
Description
Use the stp mode command to configure Spanning Tree’s running mode.
Use the undo stp mode command to restore the default Spanning Tree’s running
mode.
By default, the value is rstp.
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