SNMP Manager Programmer's Guide

Introduction to Manager Services
SNMP Manager Programmer’s Guide–134249
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Building the Executable Manager
Refer to Section 2, Programming Examples, for a description of the sample managers
that illustrate these components.
Building the Executable Manager
Figure 1-12 summarizes the steps, Manager Services components, and programming
tools used to build executable managers:
The Guardian and OSS environments support several scenarios for building your
manager:
•
Guardian tools can be executed from either the Guardian or the OSS environment to
create a manager executable in the Guardian environment.
•
The c89 utility can be executed from either environment to create a manager that is
executable in the OSS environment.
Section 8, Building Executable Managers
, describes the build scripts provided with
Manager Services for use with the sample manager files.
Decoding
packet
When your manager receives a response or trap packet, you
decode it using the library function
SNMP_Decode_Packet_WER(), described in Section 6.
Deallocating
space
When memory allocated for holding packets is no longer needed,
you use several library functions to deallocate it. To deallocate a
packet structure, use SNMP_Free(), described in Section 5. To
deallocate an encoded-packet buffer, use EBuffer_Clean(), as
described in Section 6.
Interpreting
packet
After a packet has been decoded, you parse it for information to
return to the user, such as MIB object values and any SNMP
errors encountered. Section 6 contains information useful when
parsing packets.
MIB object
handling
You resolve extracted information into representations
appropriate for the user.
User interface
logic
You format responses and notifications and present them to the
user.
Compilation The manager source code file, which contains directives to
include the required library header files, is compiled.
Binding/Linking The Manager Services library, SNMPLIB, is bound or linked to
the manager object code.
Optimization The executable manager file can optionally be optimized to
enhance CPU performance.