Enabling the MSTI

To enable the MSTI (Multiple Spanning Tree Instances), use the following command and specify the MSTI domain as the stpd_name:

enable stpd {stpd_name}
Note

Note

If two switches are configured for the same CIST and MSTI region, in order for them to understand that they are in the same region, both must also belong to the same VLAN (Virtual LAN) which is added to the STP (Spanning Tree Protocol) domain. If they belong to different VLANs, each switch believes that each belongs to a different region. When an MSTP (Multiple Spanning Tree Protocol) BPDU is sent, it carries a VID digest created by VLAN memberships in the CIST domain and the MSTI domain.