Siemens SCALANCE W788-1 M12

Technical basics
4.13 Spanning Tree
SCALANCE W780/W740 to IEEE 802.11n Web Based Management
74 Configuration Manual, 08/2018, C79000-G8976-C267-13
Common and Internal Spanning Tree (CIST)
CIST identifies the internal instance used by the switch that is comparable in principle with
an internal RSTP instance.