Operation Manual – MSTP
Quidway S3100 Series Ethernet Switches
Chapter 1 MSTP Configuration
Huawei Technologies Proprietary
1-13
Caution:
z
Once you specify a switch as the root bridge or a secondary root bridge by using the
stp root primary
or
stp root secondary
command, the bridge priority of the switch
is not configurable.
z
During the selection of root bridge, if multiple switches have the same bridge priority,
the one with the least MAC address will become the root bridge.
II. Configuration example
# Set the bridge priority of the current switch to 4,096 in spanning tree instance 1.
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] stp instance 1 priority 4096
1.2.5 MSTP Operation Mode Configuration
A MSTP-enabled switch can operate in one of the following operation modes:
z
STP-compliant mode: In this mode, the protocol packets sent out of the ports of
the switch are STP packets. If the switched network contains STP-enabled
switches, you can configure the current MSTP-enabled switch to operate in this
mode by using the
stp mode stp
command.
z
RSTP-compliant mode: In this mode, the protocol packets sent out of the ports of
the switch are RSTP packets. If the switched network contains RSTP-enabled
switches, you can configure the current MSTP-enabled switch to operate in this
mode by using the
stp mode rstp
command.
z
MSTP mode: In this mode, the protocol packets sent out of the ports of the switch
are MSTP packets, or STP packets if the ports have STP-enabled switches
connected. In this case, the multiple spanning tree function is enabled as well.
I. Configuration procedure
Table 1-7
Configure MSTP operation mode
Operation
Command
Description
Enter system view
system-view
—
Configure the
MSTP operation
mode for the
switch
stp mode
{
stp
|
rstp
|
mstp
}
Required
A MSTP-enabled switch
operates in the MSTP mode
by default.