Change Smart Grouping Subnet

Question

We have renumbered a few of our network segments from 192.168.1.x and 192.168.2.x to 172.20.201.x and 172.20.202.x. We didn't have to change anything in IPmonitor as we are using the FQDN and DNS is correctly updated.

All the monitors are working correctly when reaching the monitor via tthe new IP, but now the smart grouping by subnet is incorrect. I have run a discover on the new range but I can't get the current monitors to move from the old subnet to the new subnet.

Thoughts.

FormerMember · Answer

?? Looks like I have discovered that Smart Subnets are useless unless you use the actual IP instead of the FQDN, so I have deleted all of them. So this begs the question, if I was using FQDN when I first set the all up, how did the original IP Smart Subnets get created.?

FormerMember · Answer

The servers are all using FQDN instead of actual IP, so some process intially put it those IP subnet smart groups. With the IP change, the Monitors continued to work correctly as we just updated DNS (as it should).

Fodome · Answer

Good day pgordemer,

The subnet groups will provide the list of Devices which have an IP that falls within the specified IP range.  Keep in mind that if the IP of the system changes, the IP within the Device's Properties must be updated.  In order to accomplish this, simply go to "Devices -> All Managed Devices", select the Device in question and click "Edit -> Properties".  Change the "Primary IP" value as needed.  In order to change multiple Devices, you can also click "Discovery -> Previous Scan Results", select the Devices you wish to update and click "Rescan".

Hope this helps.

Sincerely

Chris Foley