xstInstanceCfgBridgeHelloTime — Multiple manufacturers; see the original MIB MIB copies (LibreNMS/Observium Community), Edgecore official enterprise switch MIBs, Edgecore MIB copies (Observium Community)
For RST or MST protocol,the time (in hundredths of a second) that all bridges use for HelloTime when this bridge is acting as the root. The granularity of this timer is specified by 802.1D-1990 to be 1 second.