lwIP SNMPv2c agent
==================
Based on SNMP stack written by Christiaan Simons <christiaan.simons@axon.tv>
Rewritten by Martin Hentschel <info@cl-soft.de> and
Dirk Ziegelmeier <dziegel@gmx.de>
Features:
- SNMPv2c support.
- Low RAM usage - no memory pools, stack only.
- MIB2 implementation is separated from SNMP stack.
- Support for multiple MIBs (snmp_set_mibs() call) - e.g. for private MIB.
- Simple and generic API for MIB implementation.
- Comfortable node types and helper functions for scalar arrays and tables.
- Counter64, bit and truthvalue datatype support.
- Callbacks for SNMP writes e.g. to implement persistency.
- Runs on two APIs: RAW and netconn.
- Async API is gone - the stack now supports netconn API instead,
so blocking operations can be done in MIB calls.
SNMP runs in a worker thread when netconn API is used.
- Simplified thread sync support for MIBs - useful when MIBs
need to access variables shared with other threads where no locking is
possible. Used in MIB2 to access lwIP stats from lwIP thread.
MIB compiler (code generator):
- Written in C#. MIB viewer used Windows Forms.
- Developed on Windows with Visual Studio 2010.
- Can be compiled and used under Linux with http://www.monodevelop.com/.
- Based on a heavily modified version of of SharpSnmpLib (a4bd05c6afb4)
(https://sharpsnmplib.codeplex.com/SourceControl/network/forks/Nemo157/MIBParserUpdate).
- MIB parser, C file generation framework and LWIP code generation are cleanly
separated, which means the code may be useful as a base for code generation
of other SNMP agents.
Notes:
- Stack and MIB compiler were used to implement a Profinet device.
Compiled/implemented MIBs: LLDP-MIB, LLDP-EXT-DOT3-MIB, LLDP-EXT-PNO-MIB.
Michael Sauer
1b0501179d