Helpful information on custom SNMP probes

Writing Custom SNMP Probes

It's relatively straightforward to write custom probes for your equipment that isn't handled by InterMapper's built-in probes. Read how here.

Interactive SNMP Probe Builder

InterMapper can use MIB variables or OIDs to request values from a device. This page creates a copy-pastable file that can be used as a custom SNMP probe.

Handling SNMP Tables In Custom Probes

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.

Enumerations in Custom Probes

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.

The Dartware SNMP MIB

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.

Web Tools

Interactive SNMP Probe Builder

Create an InterMapper SNMP probe interactively with this handy web tool.

On-Demand Table Maker

Create an on-demand table for an InterMapper custom SNMP probe with this handy web tool.

MIB Validator

SimpleWeb.org has a MIB Validator web page that will check the validity of one (or several) MIBs.