VARIABLES man page on Oracle

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	   variables - Format of specifying variable names to SNMP tools.

       The  syntax and semantics of management information in SNMP is given by
       SNMP protocol to operate correctly, but are typically  needed  by  SNMP
       client applications to display information in a meaningful manner.

       client  and  server  share a common understanding about what management
       information represents.

       take a number of forms.	 Note that all of the examples in this section
       refer to the same MIB object.

   Numeric OIDs
       "subidentifiers"),  typically  written using dots to separate the indi‐
       vidual subidentifiers.
       packets that are sent over the network.

       object definitions to be available.  However it does rely on the client
       application  and/or  network administrator knowing what a given numeric
       OID refers to.  As such, it is not a particularly  helpful  representa‐
       tion to anyone just starting out with SNMP.

       most Net-SNMP commands.

   Full OID path
       list  representation,  but  with the numeric subidentifiers replaced by
       names, taken from the relevant MIB file(s).
       This uniquely identifies a particular MIB object (as with  the  numeric
       what information this object represents.	 However it does rely  on  the

       most Net-SNMP commands.

       A  variant  of  this  (typically	 used when writing OIDs in descriptive
       text, rather than running programs), is to combine the name and numeric

   Module-qualified OIDs
       give  the name of the MIB object, together with the MIB module where it
       is defined.
       not unheard of), this format specifies the desired object in a  reason‐
       ably  compact form.  It also makes it relatively easy to find the defi‐
       nition of the MIB object.

       This is the default format for displaying  OIDs	in  Net-SNMP  applica‐
       tions.	It can also be specified explicitly by giving the command-line
       option -OS to most Net-SNMP commands.

   Object name
       Possibly the most common form for specifying MIB objects is  using  the
       module that defines it.
       MIB object with the same name (which is perfectly legal in some circum‐
       stances),  then it's not necessarily clear which MIB object is actually
       potential ambiguities.

       most Net-SNMP commands.

       of the OID began with then this prefix
       was removed from the OID before displaying it.	All  other  OIDs  were
       displayed in full.

       with a dot (and wasn't in the module::name format), then the same  pre‐
       fix  was	 prepended.    The  example  OID from the formats listed above
       would therefore be given or displayed as
       The inconsistent handling of OIDs, depending on their  location	within
       the  OID	 tree,	proved	to be more trouble than it was worth, and this
       format is no longer recommended.

       The previous behaviour can  be  obtained	 by  giving  the  command-line
       option -Ou (for displaying output), or -Iu (for interpreting input OIDs
       without a leading dot) to most Net-SNMP commands.


       (although correct) interpretations of the ASN.1 notation.

V5.7.2				  01 Oct 2010			  VARIABLES(5)

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