D-Link DWS-4026 Product Manual - Page 542

D-Link Unified Access System Software User Manual 12/10/09 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 MSTP 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. 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. 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 MSTP 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 STP 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. d. Click Submit. e. Repeat the steps to create an MST instance with an ID of 20. 5 Associate MST ID 10 with VLAN 10 and assign a bridge priority of 16384 Page 542 Configuring Multiple Spanning Tree Protocol Document 34CSFP6XXUWS-SWUM100-D7