Configuring Multiple Spanning Tree Protocol
D-Link Unified Wired and Wireless Access System
Oct. 2015 Page 682
D-Link UWS User Manual
Configuring Multiple Spanning Tree Protocol
This example shows how to enable IEEE 802.1s Multiple Spanning Tree (MST) protocol on the switch and all of
the ports and to set the bridge priority.
To make multiple switches be part of the same M region, make sure the Force Protocol Version setting for all
switches is IEEE 802.1s. Also, make sure the configuration name, digest key, and revision level are the same
for all switches in the region.
1. Create VLANs 10 and 20.
a. Access the LAN > L2 Features > VLAN > VLAN Configuration page.
b. Select the Create option in the VLAN field.
c. Select the VLAN ID-Individual option and enter 10.
d. Click Submit.
e. Repeat the steps to add VLAN 20.
2. Enable M on the switch and change the configuration name.
3. Changing the configuration name allows all the bridges that want to be part of the same region to join.
a. Go to the LAN > L2 Features > Spanning Tree > Switch Configuration/Status page.
b. From the Mode menu, select Enable.
c. In the Configuration Name field, enter dlink.
d. Click Submit.
4. Create two MST instances.
a. Go to the LAN > L2 Features > Spanning Tree > MST Configuration/Status page.
b. From the MST field, select Create.
c. In the MST ID field, enter 10.
Note: The digest key is generated based on the association of VLANs to different instances. To ensure
the digest key is same, the mapping of VLAN to instance must be the same on each switch in the
region. For example, if VLAN 10 is associated with instance 10 on one switch, you must associate VLAN
10 and instance 10 on the other switches.
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