3Com Switch 8800 Advanced Software V5 Configuration Guide

MSTP Configuration Examples 135

Network diagram

Figure 36 Network diagram for MSTP configuration

"Permit:" beside each link in the figure is followed by the VLANs the packets of

which are permitted to pass this link.

Configuration procedure

1 Configuration on Switch A

# Configure an MST region.

<SysnameA> system-view

[SysnameA] stp region-configuration

[SysnameA-mst-region] region-name example

[SysnameA-mst-region] instance 1 vlan 10

[SysnameA-mst-region] instance 3 vlan 30

[SysnameA-mst-region] instance 4 vlan 40

[SysnameA-mst-region] revision-level 0

# Activate MST region configuration manually.

[SysnameA-mst-region] active region-configuration

[SysnameA-mst-region] quit

# Configure Switch A as the root bridge of MST instance 1.

[SysnameA] stp instance 1 root primary

# View the MST region configuration information that has taken effect.

[SysnameA] display stp region-configuration

Oper configuration

Format selector :0

Region name :example

Revision level :0

Instance Vlans Mapped

0 1 to 9, 11 to 29, 31 to 39, 41 to 4094

1 10

3 30

4 40

2 Configuration on Switch B

# Configure an MST region.