Mstp Configuration Example - 3Com 4500 PWR 26-Port Configuration Manual

MSTP Configuration Example

Network requirements
Implement MSTP in the network shown in
forwarded along different MSTIs. The detailed configurations are as follows:
All switches in the network belong to the same MST region.
Packets of VLAN 10, VLAN 30, VLAN 40, and VLAN 20 are forwarded along MSTI 1, MSTI 3, MSTI
4, and MSTI 0 respectively.
In this network, Switch A and Switch B operate on the convergence layer; Switch C and Switch D
operate on the access layer. VLAN 10 and VLAN 30 are limited in the convergence layer and VLAN 40
is limited in the access layer. Switch A and Switch B are configured as the root bridges of MSTI 1 and
MSTI 3 respectively. Switch C is configured as the root bridge of MSTI 4.
Network diagram
Figure 20-10 Network diagram for MSTP configuration
The word "permit" shown in
VLANs.
Configuration procedure
1) Configure Switch A
# Enter MST region view.
<Sysname> system-view
[Sysname] stp region-configuration
# Configure the region name, VLAN-to-instance mapping table, and revision level for the MST region.
[Sysname-mst-region] region-name example
[Sysname-mst-region] instance 1 vlan 10
[Sysname-mst-region] instance 3 vlan 30
[Sysname-mst-region] instance 4 vlan 40
[Sysname-mst-region] revision-level 0
# Activate the settings of the MST region manually.
[Sysname-mst-region] active region-configuration
Figure 20-10
Figure 20-10 means the corresponding link permits packets of specific
20-46
to enable packets of different VLANs to be