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Relete SNMP README and incorporate it's text in doxygen docs
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lwIP SNMPv2c agent
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==================
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Based on SNMP stack written by Christiaan Simons <christiaan.simons@axon.tv>
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Rewritten by Martin Hentschel <info@cl-soft.de> and
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Dirk Ziegelmeier <dziegel@gmx.de>
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Features:
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- SNMPv2c support.
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- Low RAM usage - no memory pools, stack only.
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- MIB2 implementation is separated from SNMP stack.
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- Support for multiple MIBs (snmp_set_mibs() call) - e.g. for private MIB.
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- Simple and generic API for MIB implementation.
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- Comfortable node types and helper functions for scalar arrays and tables.
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- Counter64, bit and truthvalue datatype support.
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- Callbacks for SNMP writes e.g. to implement persistency.
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- Runs on two APIs: RAW and netconn.
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- Async API is gone - the stack now supports netconn API instead,
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so blocking operations can be done in MIB calls.
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SNMP runs in a worker thread when netconn API is used.
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- Simplified thread sync support for MIBs - useful when MIBs
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need to access variables shared with other threads where no locking is
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possible. Used in MIB2 to access lwIP stats from lwIP thread.
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MIB compiler (code generator):
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- Written in C#. MIB viewer used Windows Forms.
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- Developed on Windows with Visual Studio 2010.
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- Can be compiled and used under Linux with http://www.monodevelop.com/.
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- Based on a heavily modified version of of SharpSnmpLib (a4bd05c6afb4)
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(https://sharpsnmplib.codeplex.com/SourceControl/network/forks/Nemo157/MIBParserUpdate).
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- MIB parser, C file generation framework and LWIP code generation are cleanly
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separated, which means the code may be useful as a base for code generation
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of other SNMP agents.
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Notes:
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- Stack and MIB compiler were used to implement a Profinet device.
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Compiled/implemented MIBs: LLDP-MIB, LLDP-EXT-DOT3-MIB, LLDP-EXT-PNO-MIB.
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@ -42,11 +42,48 @@
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* The agent implements the most important MIB2 MIBs including IPv6 support
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* (interfaces, UDP, TCP, SNMP, ICMP, SYSTEM). IP MIB is an older version
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* whithout IPv6 statistics (TODO).\n
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* Work on SNMPv3 has started, but is not finished.
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* Rewritten by Martin Hentschel <info@cl-soft.de> and
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* Dirk Ziegelmeier <dziegel@gmx.de>\n
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* Work on SNMPv3 has started, but is not finished.\n
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*
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* 0 Agent Capabilities
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* ====================
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*
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* Features:
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* ---------
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* - SNMPv2c support.
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* - Low RAM usage - no memory pools, stack only.
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* - MIB2 implementation is separated from SNMP stack.
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* - Support for multiple MIBs (snmp_set_mibs() call) - e.g. for private MIB.
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* - Simple and generic API for MIB implementation.
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* - Comfortable node types and helper functions for scalar arrays and tables.
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* - Counter64, bit and truthvalue datatype support.
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* - Callbacks for SNMP writes e.g. to implement persistency.
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* - Runs on two APIs: RAW and netconn.
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* - Async API is gone - the stack now supports netconn API instead,
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* so blocking operations can be done in MIB calls.
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* SNMP runs in a worker thread when netconn API is used.
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* - Simplified thread sync support for MIBs - useful when MIBs
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* need to access variables shared with other threads where no locking is
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* possible. Used in MIB2 to access lwIP stats from lwIP thread.
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*
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* MIB compiler (code generator):
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* ------------------------------
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* - Provided in lwIP contrib repository.
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* - Written in C#. MIB viewer used Windows Forms.
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* - Developed on Windows with Visual Studio 2010.
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* - Can be compiled and used on all platforms with http://www.monodevelop.com/.
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* - Based on a heavily modified version of of SharpSnmpLib (a4bd05c6afb4)
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* (https://sharpsnmplib.codeplex.com/SourceControl/network/forks/Nemo157/MIBParserUpdate).
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* - MIB parser, C file generation framework and LWIP code generation are cleanly
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* separated, which means the code may be useful as a base for code generation
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* of other SNMP agents.
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*
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* Notes:
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* ------
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* - Stack and MIB compiler were used to implement a Profinet device.
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* Compiled/implemented MIBs: LLDP-MIB, LLDP-EXT-DOT3-MIB, LLDP-EXT-PNO-MIB.
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*
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* SNMPv1 per RFC1157 and SNMPv2c per RFC 3416
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* -------------------------------------------
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* Note the S in SNMP stands for "Simple". Note that "Simple" is
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