The bridge identifier of the Root of the Multiple spanning tree region as determined by the Spanning Tree Protocol as executed by this node. This value is used as the CIST Regional Root Identifier parameter in all Configuration Bridge PDUs originated by this node.
Sources for this description
Multiple manufacturers; see the original MIB MIB copies (LibreNMS/Observium Community)Netdisco MIB archive copiesNortel MIB copies (LibreNMS/Observium Community)Radware MIB copies (LibreNMS/Observium Community)