3Com Switch 8800 Advanced Software V5 Configuration Guide

120 CHAPTER 11: MSTP CONFIGURATION
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■ You must enable MSTP for the device before any other MSTP-related
configuration can take effect.
■ To control MSTP flexibly, you can use the stp disable or undo stp command
to disable the MSTP feature for specific ports so that they will not take part in
spanning tree computing and thus to save the device’s CPU resources.
Configuration example
# Enable MSTP for the device and disable MSTP for port Ethernet 1/1/1.
<Sysname> system-view
[Sysname] stp enable
[Sysname] interface ethernet 1/1/1
[Sysname-Ethernet1/1/1] stp disable
Configuring Leaf
Nodes
Perform the following configurations for a device operating as a leaf node.
Configuring an MST
Region
Refer to “Configuring an MST Region” on page 109.
Configuring the Work
Mode of MSTP
Refer to “Configuring the Work Mode of MSTP Device” on page 112.
Configuring the Timeout
Factor
Refer to “Configuring the Timeout Factor” on page 116.
Configuring the
Maximum Transmission
Rate of Ports
Refer to “Configuring the Maximum Transmission Rate of Ports” on page 116.
Configuring Ports as
Edge Ports
Refer to “Configuring Ports as Edge Ports” on page 117.
Configuring Path Costs
of Ports
Path cost is a parameter related to the rate of port-connected links. On an
MSTP-compliant device, ports can have different priorities in different MST
Enter Ethernet
interface view
or port group
view
Enter Ethernet
interface view
interface interface-type
interface-number
User either command
Configured in Ethernet
interface view, the setting is
effective on the current port
only; configured in port
group view, the setting is
effective on all ports in the
port group
Enter port
group view
port-group { manual
port-group-name |
aggregation agg-id }
Enable the MSTP feature for
the port(s)
stp enable Optional
By default, MSTP is enabled
for all ports after it is enabled
for the device globally
To do... Use the command... Remarks