SNMP Subagent Programmer's Guide

Programming Tutorials

SNMP Subagent Programmer’s Guide—119728 2-57

Indexed Trap Generator

This subagent illustrates how to generate a trap containing three variable bindings: a

card number, a port number, and a computed ratio of the two numbers. These three

variables constitute one entry in a static table that the subagent builds upon startup.

The index to each entry is a combination of its associated card number and port number.

When the user enters a card and port number combination that matches an existing index

value, Indexed Trap Generator sends a trap containing the values in the entry.

This subagent also handles Get and GetNext operations on the table and several other

MIB objects. It provides locator and next functions to help the run-time library find

individual table entries.

These files are related to Indexed Trap Generator:

Functions

Invoke Indexed Trap Generator by specifying the executable subagent name and a

NonStop agent process name:

RUN TBLTRAP /NAME $TRGEN/ $ZSNMP

The subagent blocks until the NonStop agent indicates that object registration is

complete. Then the subagent prompts the user for input at a terminal:

To cause a trap, enter card, port:

If the card and port number constitute a valid index into the table, Indexed Trap

Generator generates a trap, then processes any pending SNMP requests before re-

prompting for input. If the index value does not exist, the subagent processes any

pending request, then re-prompts the user for input.

This subagent supports the following SNMP requests for its MIB objects:

tbltrapc C source code

tbltrsmi MIB definition

tbltrapm TACL routine

tblTrapCards Get

tblTrapPorts Get

tblTrapTableEntry Get and GetNext