Net-snmp opaque float implementation problem
Dave Shield
> The purpose of implementing this mib module is so that our customer can=
use =
> their own MIB browser to talk to the agent running in our proprietary =
box. =
> =
> If I want to implement some floating point object so that customer coul=
d
> also get and set it as floats what would be the best way to implement?
Use an ASCII string containing a printable representation of the value,
and translate it to/from an actual float within your MIB module code.
I.e. following UCD-SNMP-MIB::laLoad rather than UCD-SNMP-MIB::laLoadFloat=
Dave
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Sabina Sayeed
Anyway thanks again for your time.=20
The purpose of implementing this mib module is so that our customer can =
use=20
their own MIB browser to talk to the agent running in our proprietary =
box.=20
If I want to implement some floating point object so that customer could =
also=20
get and set it as floats what would be the best way to implement?
Is there any example anywhere that I could refer to?
Thanks again,
Sabina
-----Original Message-----
From: Dave Shield [mailto:D.T.S...@csc.liv.ac.uk]
Sent: Wednesday, April 14, 2004 10:21 AM
To: Sabina Sayeed
Cc: net-snm...@lists.sourceforge.net
Subject: Re: Net-snmp opeque float implementation problem=20
[ First - *please* don't mail me privately, without copying
any responses to the mailing list. I don't have the time
or inclination to offer private, unpaid, SNMP consultancy.
Keep discussions to the list, where others can both learn
and offer advice. Thanks. ]
> 1. Thanks for the suggestion. Yes it works from the local host now.
Good.
> 2. I have a MG_Soft MIB Browser running on my PC. If I try to get
> this object from MIB browser I get the following output in hex again.
Very likely.
The opaque-wrapped float syntax is a private enhancement with the
Net-SNMP suite. I wouldn't expect it to be understood by any other
SNMP toolkit or most SNMP applications.
> 3. If I do a set 2.1 on type opaque from my MIB Browser I get an =
error:
> ***** SNMP SET-RESPONSE START *****
> Error: Wrong type
> Error index: 1
> 1: macDefConfRcstXcoord.0 (opaque) 32.2E.31 (hex)
> ***** SNMP SET-RESPONSE END *****
Yes - you will.
The value of an opaque-wrapped float is *NOT* simply an ascii string.
See the DEFINITION of the Float type in NET-SNMP-TC.txt for the
gory details.
> Is OPAQUE FLOAT some special type that is not supported by my tools.
Yes.
> Is there any way=20
> for my MIB Browser to identify and do the wrapping for this type?
Unless you've got the source to the browser, then probably not.
Sabina Sayeed
Thanks,
Sabina
-----Original Message-----
From: Dave Shield [mailto:D.T.S...@csc.liv.ac.uk]
Sent: Wednesday, April 14, 2004 10:45 AM
To: Sabina Sayeed
Cc: net-snm...@lists.sourceforge.net
Subject: Re: Net-snmp opaque float implementation problem=20
> The purpose of implementing this mib module is so that our customer =
can use=20
> their own MIB browser to talk to the agent running in our proprietary =
box.=20
>=20
> If I want to implement some floating point object so that customer =
could
> also get and set it as floats what would be the best way to implement?
Use an ASCII string containing a printable representation of the value,
and translate it to/from an actual float within your MIB module code.
I.e. following UCD-SNMP-MIB::laLoad rather than =
UCD-SNMP-MIB::laLoadFloat