If there are 4 systems installed SAP, how should I connect all of them in
one network so that I can administrate the 4 systems with one among them as main
server.
This should help you:
After installing an R/3 System, you can use transaction RZ20 to monitor the
system. To monitor all systems of your system landscape centrally from one
system, first customize the alert monitor by choosing Tools > CCMS >
Configuration > Alert monitor or calling transaction RZ21.
Then, to specify the remote systems by System ID and RFC destination (which
must have been created beforehand), choose Technical infrastructure > Create
remote monitoring entry.
Next, to change your monitor definitions (you can only change your own
monitors), choose Tools > CCMS > Control/Monitoring > Alert monitor or call
transaction RZ20.
Activate the maintenance function by choosing Extras > Activate maintenance
function.
Then, double click on the monitor and choose Monitoring change.
Parameter R3system defines which systems can be monitored by an alert monitor.
Change parameter R3system from <CURRENT> (only the current R/3 System can be
monitored) to <ALL> (all R/3 Systems defined in RZ21 can be monitored). Save
the changes.
It will help you monitor & use spome other activities centrally.