xstInstanceCfgHelloTime — Multiple manufacturers; see the original MIB MIB copies (LibreNMS/Observium Community), Edgecore official enterprise switch MIBs, Edgecore MIB copies (Observium Community)
The amount of time between the transmission of configuration bridge PDUs by this node on any port when it is the root of the specific spanning tree or trying to become so, in units of hundredths of a second. This is the actual value that this bridge is currently using in RST or MST.