> From: Vincent Bernat [mailto:ber...@luffy.cx]
> Sent: Thursday, May 28, 2009 2:51 PM
> OoO En ce début de soirée du jeudi 28 mai 2009, vers 21:23,
> PoWah Wong
> <wong_po...@yahoo.ca> disait :
>
> > Is Gauge64 defined in the snmp standard?
>
> It is not part of SMIv2. You can use CounterBasedGauge64
> instead which
> is a textual convention over Counter64. It is defined in
> HCNUM-TC and in
> RFC 2856.
[SNIP]
CounterBasedGauge64 ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The CounterBasedGauge64 type represents a non-negative
integer, which may increase or decrease, but shall never
exceed a maximum value, nor fall below a minimum value. The
maximum value can not be greater than 2^64-1
(18446744073709551615 decimal), and the minimum value can
not be smaller than 0. The value of a CounterBasedGauge64
has its maximum value whenever the information being modeled
is greater than or equal to its maximum value, and has its
minimum value whenever the information being modeled is
smaller than or equal to its minimum value. If the
information being modeled subsequently decreases below
(increases above) the maximum (minimum) value, the
CounterBasedGauge64 also decreases (increases).
Note that this TC is not strictly supported in SMIv2,
because the 'always increasing' and 'counter wrap' semantics
associated with the Counter64 base type are not preserved.
It is possible that management applications which rely
solely upon the (Counter64) ASN.1 tag to determine object
semantics will mistakenly operate upon objects of this type
as they would for Counter64 objects.
This textual convention represents a limited and short-term
solution, and may be deprecated as a long term solution is
defined and deployed to replace it."
SYNTAX Counter64
[/SNIP]
Translation: Danger, Will Robinson, danger!
HTH,
Mike
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