Configuring Priorities and Root Protection in MSTP Multi-process
You can configure priorities and root protection in Multiple Spanning Tree Protocol (MSTP) multi-process to protect links over access rings.
Context
To prevent loops over the access ring after the share links fails, configure priorities and root protection in MSTP multi-process.
Root protection is configured on the access interface of a device with second highest priority.
For detailed configuration of priorities in MSTP multi-process, see (Optional) Configuring a Priority for a Device in an MSTI.
For detailed configuration of root protection in MSTP multi-process, see Configuring Root Protection on an Interface.
The MSTP priority of a downstream device must be lower than that of a UPE.