Custom Probes and SNMP
It's relatively straightforward to write custom probes for your equipment that isn't handled by InterMapper's built-in probes. Read how here.
Displaying SNMP Tables on Demand
InterMapper has the ability to retrieve and display the contents of a table from a SNMP-speaking device.
Regular Expressions in Custom Probes
Regular expressions allow you to parse fields out of a text string received either by SNMP or within a TCP probe.
InterMapper has several techniques for displaying enumerations from SNMP MIBs where the designer represents text strings as numeric values. This numeric representation is more compact, and therefore efficient, but makes it hard for humans to read.
SNMP OIDs and the MIB Compiler
InterMapper can import MIBs so that custom probes and trap log entries can use symbolic names instead of the more obscure OIDs.
How InterMapper Handles SNMP Traps
InterMapper can parse the fields of SNMP Traps. A custom SNMP probe can extract that information and send alerts based on the contents of that trap.
InterMapper can send traps as a notifier/alert. The MIB describes the format of the fields of the trap notifications.
InterMapper Monitoring Traffic Load
How much traffic does InterMapper generate? Not too much. This note describes the amount of traffic generated by the various kinds of InterMapper probes.