A tunnel in Avantra is used when a connection between two Gateways is only possible in one direction. i.e. Gateway A can connect to Gateway B but Gateway B can’t connect to Gateway A.
Technically Gateway A keeps alive a connection to Gateway B, which allows Gateway B to send data to Gateway A without actually having to establish a connection to Gateway A.
Avantra uses intelligent monitoring objects. It watches for critical trends more than for single events. A single shortdump in an SAP System is not considered critical. A certain number of shortdumps over a given period of time indeed is considered critical. We call this Trend Analysis, and it greatly reduces the number of false alerts.