Re: get_request against hrSystemDate

On 06/11/06, Alan Cooper <[email protected]> wrote:
> I'm doing a "get_request" for HOST-RESOURCES-MIB::hrSystemDate.0
> (1.3.6.1.2.1.25.6.3.1.5.1).

> A snmpwalk indicates I should be getting returned is something like:
> 2006-11-4,18:23:55.8

Not quite.
The snmpwalk command *displays* the value in this format, but
that's not what is passed back from the agent.


> What the get_request is giving me is "0x07d4010705181e00"

That's correct.
hrSystemDate is defined using the syntax DateAndTime,
from SNMPv2-TC.   This type is defined as follows:

DateAndTime ::= TEXTUAL-CONVENTION
    DISPLAY-HINT "2d-1d-1d,1d:1d:1d.1d,1a1d:1d"
    STATUS       current
    DESCRIPTION
            "A date-time specification.

            field  octets  contents                  range
            -----  ------  --------                  -----
              1      1-2   year*                     0..65536
              2       3    month                     1..12
              3       4    day                       1..31
              4       5    hour                      0..23
              5       6    minutes                   0..59
              6       7    seconds                   0..60
                           (use 60 for leap-second)
              7       8    deci-seconds              0..9
              8       9    direction from UTC        '+' / '-'
              9      10    hours from UTC*           0..13
             10      11    minutes from UTC          0..59

            For example, Tuesday May 26, 1992 at 1:30:15 PM EDT would be
            displayed as:

                             1992-5-26,13:30:15.0,-4:0"
    SYNTAX       OCTET STRING (SIZE (8 | 11))



The actual value is a binary string - 8 (or 11) characters long.
Which is exactly what you're receiving.

The "snmpwalk" command then uses the "Display-Hint" to
print this binary string in a more meaningful manner.
But it's up to the client side to interpret this - the agent just sends
the raw value.

Dave

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