TP-Link TL-SG3210 User Manual page 103

Configure Switch C:

Step Operation
1 Configure ports
2 Enable STP function
3 Configure the region name and
the revision of MST region
4 Configure
mapping table of the MST region
5 Configure switch C as the root
bridge of Instance 1
6 Configure switch C as the root
bridge of Instance 2
Configure Switch D:

Step Operation
1 Configure ports
2 Enable STP function
3 Configure the region name and
the revision of MST region
4 Configure
mapping table of the MST region
The configuration procedure for switch E and F is the same with that for switch D.

The topology diagram of the two instances after the topology is stable

For Instance 1 (VLAN 101, 103 and 105), the red paths in the following figure are connected

links; the gray paths are the blocked links.
Description
On VLAN→802.1Q VLAN page, configure the link type
of the related ports as Trunk, and add the ports to
VLAN101-VLAN106. The detailed instructions can be
found in the section 802.1Q VLAN.
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.
On Spanning Tree→MSTP Instance→Region Config
page, configure the region as TP-LINK and keep the
default revision setting.
VLAN-to-Instance On
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.
On
Config page, configure the priority of Instance 1 to be
4096.
On
Config page, configure the priority of Instance 2 to be 0.
Description
On VLAN→802.1Q VLAN page, configure the link type
of the related ports as Trunk, and add the ports to
VLAN101-VLAN106. The detailed instructions can be
found in the section 802.1Q VLAN.
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.
On Spanning Tree→MSTP Instance→Region Config
page, configure the region as TP-LINK and keep the
default revision setting.
VLAN-to-Instance On
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.
Spanning Tree→MSTP
Spanning Tree→MSTP
Spanning Tree→MSTP
Spanning Tree→MSTP
94
Instance→Instance
Instance→Instance
Instance→Instance
Instance→Instance