3Com Switch 8800 Advanced Software V5 Configuration Guide

134 CHAPTER 11: MSTP CONFIGURATION
Configuration procedure
Follow these steps to enable the TC-BPDU attack guard function
Configuration example
# Enable the TC-BPDU attack guard function.
<Sysname> system-view
[Sysname] stp tc-protection enable
Displaying and
Maintaining MSTP
MSTP Configuration
Examples
Network requirements
Configure MSTP so that packets of different VLANs are forwarded along different
spanning trees. The specific configuration requirements are as follows:
■ All devices on the network are in the same MST region.
■ Packets of VLAN 10 are forwarded along MST instance 1, those of VLAN 30 are
forwarded along MST instance 3, those of VLAN 40 are forwarded along MST
instance 4, and those of VLAN 20 are forwarded along MST instance 0.
■ Switch A and Switch B are convergence layer devices, while Switch C and
Switch D are access layer devices. VLAN 10 and VLAN 30 are terminated on the
convergence layer devices, and VLAN 40 is terminated on the access layer
devices, so the root bridges of MST instance 1 and MST instance 3 are Switch A
and Switch B, while the root bridge of MST instance 4 is Switch C.
To do... Use the command... Remarks
Enter system view system-view -
Enable the TC-BPDU attack
guard function
stp tc-protection enable Optional
Enabled by default
To do... Use the command... Remarks
View the MSTP status
information and statistics
information
display stp [ instance
instance-id ] [ interface
interface-list | slot slot-num ] [
brief ]
Available in any view
View the MST region
configuration information
display stp
region-configuration
Available in any view
View the list of the VLANs
with VLAN Ignore enabled
display stp ignored-vlan Available in any view
Clear the MSTP statistics
information
reset stp [ interface
interface-list ]
Available in user view