[SNMP4J] diskIOWrites - cached responses

[Dave Shield]

On 01/12/2007, Frank Fock <fock at agentpp.com> wrote:
> What seems to be strange, that a walk on diskIOWrites.5 returns
> a diskIOWrites.5 instance. I would have expected an instance with OID >
> diskIOWrites.5 instead.

That's deliberate.

Conceptually, the behaviour of snmpwalk is
   "get me all the information from the subtree
    rooted on the specified OID"

If the OID is a leaf instance, then "all the information"
is the corresponding value for this instance.

Internally, this behaviour is implemented by issuing
a sequence of GETNEXT requests until the response
OID falls outside the specified subtree.   The standard
approach, basically.
   But if the very first request returns an OID outside
this subtree, then the snmpwalk command tries a
final GET request on the specified OID, to handle
this very case of providing a leaf instance OID.

   This behaviour can be turned off using the option -CI

Dave

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