Dell PowerConnect 6248 Command Line Interface Guide - Page 525

User Guidelines Before mapping VLANs to an instance use the spanning-tree mst enable command to enable the instance. All VLANs that are not explicitly mapped to an MST instance are mapped to the common and internal spanning tree (CIST) instance (instance 0) and cannot be unmapped from the CIST. For two or more switches to be in the same MST region, they must have the same VLAN mapping, the same configuration revision number, and the same name. Example The following example maps VLANs 10-20 to MST instance 1. console(config)#spanning-tree mst configuration console(config-mst)#instance 1 add vlan 10-20 name (mst) Use the name command in MST mode to define the configuration name. To return to the default setting, use the no form of this command. Syntax name string • string - Case sensitive MST configuration name. (Range: 1-32 characters) Default Configuration Bridge address. Command Mode MST mode User Guidelines This command has no user guidelines. Spanning Tree Commands 525