Dell N3200-ON EMC Networking N-Series Switches CLI Reference Guide version 6.6 - Page 791

Syntax instance instance-id {add | remove} vlan vlan-list • instance-ID - ID of the MST instance. (Range: 1-4094) • vlan-list - VLANs to be added to the existing MST instance. To specify a range of VLANs, use a hyphen. To specify a series of VLANs, use a comma. (Range: 1-4094) Default Configuration VLANs are mapped to the common and internal spanning tree (CIST) instance (instance 0). Command Mode MST mode 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 configuration name. Dell EMC Networking MSTP supports mapping of VLANs to MST instances, even though the underlying VLAN may not be defined on the switch. Traffic received on VLANs not defined on the port received is dropped. For interoperability purposes, VLAN 4094 may be mapped to an MSTI, however, VLAN 4094 is reserved internally and may not be used to forward traffic. Example The following example maps the entire range of VLANs to MST instances (MST instance 0 is mapped to VLAN 1 by default). Additionally, two 10G ports have some, but not all, of the VLANs mapped to MST instances. Layer 2 Switching Commands 791