Stp Mcheck; Stp Mode - Huawei Quidway S3900 series Command Manual

Command Manual – MSTP
Quidway S3900 Series Ethernet Switches-Release 1510

1.1.30 stp mcheck

Syntax
stp mcheck
View
System view, Ethernet port view
Parameter
None
Description
Use the stp mcheck command to perform the mCheck operation on the current port.
When a port on an MSTP-enabled upstream switch connects with an STP enabled
downstream switch, the port transits to the STP-compatible mode. But when the STP
enabled downstream switch is then replaced by an MSTP-enabled switch, the port
cannot automatically transit to the MSTP mode but remains in the STP-compatible
mode. In this case, you can force the port to transit to the MSTP mode by performing
the mCheck operation on the port.
Similarly, when a port on an RSTP-enabled upstream switch connects with an
STP-enabled downstream switch, the port transits to the STP-compatible mode. But
when the STP enabled downstream switch is then replaced by an MSTP-enabled
switch, the port cannot automatically transit to the MSTP mode but remains in the
STP-compatible mode. In this case, you can force the port to transit to the MSTP mode
by performing the mCheck operation on the port.
Related command: stp mode, stp interface mcheck.
Example
# Perform the mCheck operation for Ethernet1/0/1 port.
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] interface Ethernet1/0/1
[Quidway-Ethernet1/0/1] stp mcheck

1.1.31 stp mode

Syntax
stp mode { stp | rstp | mstp }
undo stp mode
Huawei Technologies Proprietary
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Chapter 1 MSTP Configuration Commands