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9.5 Application Example for STP Function
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Network Requirements
z
Switch A, B, C, D and E all support MSTP function.
z
A is the central switch.
z
B and C are switches in the convergence layer. D, E and F are switches in the access layer.
z
There are 6 VLANs labeled as VLAN101-VLAN106 in the network.
z
All switches run MSTP and belong to the same MST region.
z
The data in VLAN01, 103 and 105 are transmitted in the STP with B as the root bridge. The
data in VLAN02, 104 and 106 are transmitted in the STP with C as the root bridge.
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Network Diagram
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Configuration Procedure
z
Configure Switch A:
Step Operation
Description
1 Configure
ports
On
VLAN
→
802.1Q VLAN
page, configure the link type
of the related ports as Trunk, and add the ports to VLAN
101 and VLAN 106. The detailed instructions can be
found in the section 802.1Q VLAN.
2 Enable
STP
function
On
Spanning Tree
→
STP Config
→
STP Config
page,
enable STP function and select MSTP version.
On
Spanning Tree
→
STP Config
→
Port Config
page,
enable MSTP function for the port.
3
Configure the region name and
the revision of MST region
On
Spanning Tree
→
MSTP Instance
→
Region Config
page, configure the region as TP-LINK and keep the
default revision setting.
4 Configure VLAN-to-Instance
mapping table of the MST region
On
Spanning Tree
→
MSTP Instance
→
Instance
Config
page, configure VLAN-to-Instance mapping
table. Map VLAN 101, 103 and 105 to Instance 1; map
VLAN 102, 104 and 106 to Instance 2.
