Re: Problem with Cisco OID

Hello,

Thank for your reply Dave. I must have overlooked that detail of the 
length of the string.

Cheers,

Raul de Sá

On Mon, 21 Jan 2008, Dave Shield wrote:

> On 21/01/2008, Raul Miguel Nery Ferreira Sa <[email protected]> wrote:
>> three values. That table is cDot11ClientConfigInfoTable and it is indexed
>> by the values ifIndex, cd11IfAuxSsid and cDot11ClientAddress
>
>
>> Now when i try and do a snmpwalk on this table in a cisco AP
>> i can see and know what the values of cd11IfAuxSsid and
>> cDot11ClientAddress mean and i also know how to get them. But the value of
>> ifIndex comes somehow different than i have expected. Instead of just
>> showing a number(corresponding to its interface) it shows two numbers,
>> something like "1.3" instead of just "1".
>
> That's probably not quite right.
> I suspect that the extraneous '3' actually belongs to the cd11IfAuxSsid
> index, not ti ifIndex.    Is the length of the cd11IfAuxSsid value three
> octets by any chance?
>
> ifIndex is an integer-based index object, so will just use a single
> subidentifier.
> cd11IfAuxSsid is a string-based index object, so the actual string value
> will be preceded by the length of this string -  3.'a'.'b'.'c', rather
> than just "abc".
>
> That's not true of the final cDot11ClientAddress value, because this is a
> MacAddress syntax object, which will *always* be six octets, so doesn't
> need an explicit length.  But any variable-length string (except sometimes
> when it's at the end of the OID), needs a length subidentifier, so you can
> tell where this value ends, and the cDot11ClientAddress value begins.
>
> Dave
>
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