H3C S7500 Series Ethernet Switches Command Manual

Table Of Contents
Command Manual – MSTP
H3C S7500 Series Ethernet Switches Chapter 1
MSTP Configuration Commands
1-30
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 automatically. 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-compatible 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-compatible mode by performing the mCheck operation on the port.
Related commands: stp mode, stp interface mcheck.
Examples
# Perform the mCheck operation for Ethernet 2/0/1.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C] interface Ethernet2/0/1
[H3C-Ethernet2/0/1] stp mcheck
1.1.29 stp mode
Syntax
stp mode { stp | rstp | mstp }
undo stp mode
View
System view
Parameters
stp: Enables the STP-compatible mode.
mstp: Enables the MSTP mode.
rstp: Enables RSTP-compatible.
Description
Use the stp mode command to set the MSTP operation mode.
Use the undo stp mode command to revert to the default MSTP operation mode.