LINK="#0000bb"  VLINK="#551a8b" ALINK="#ff0000">
<H3>
SNMP over UDP/IP
</H3>
<P>
The <A HREF="http://www.ietf.org/rfc/rfc1157.txt">RFC 1157</A> (for v.1)
and <A HREF="http://www.ietf.org/rfc/rfc1449.txt">RFC 1449</A> (for v.2c)
defines the use of UDP/IP as a preferred network transport for running
SNMP protocol. The <B>pysnmp.mapping.udp</B> sub-package implements 
UDP/IP-based transport facilities over BSD sockets.
</P>

<P>
Modules of this package provide an abstract network transport facilities,
that is, they deal with abstract data items, have nothing to know about the
SNMP context and have no dependency of
<A HREF="../../proto/intro.html">SNMP protocol modules</A>.
</P>

<P>
In the following modules, two kinds of I/O engines is normally present -- one
to operate in client mode (or <STRONG>manager</STRONG> role, in SNMP terms),
and another, playing <STRONG>agent</STRONG> (or server) role.
</P>

<P>
<UL>
<LI>Network transports
<UL>
<LI><A HREF="role.html">Synchronous I/O engine</A>
<LI><A HREF="bulkrole.html">Multiple session, synchronous I/O engine</A>
<LI><A HREF="asynrole.html">Asynchronous I/O engine</A>
</UL>
<LI>Error recovery
<UL>
<LI><A HREF="error.html">Handling package-level errors</A>
</UL>
</UL>
</P>

<HR>

<ADDRESS>
ilya@glas.net
</ADDRESS>