RE: V3 OIDs returned in different format than V1

> From: [email protected] 
> [mailto:[email protected]] On 
> Behalf Of Bradley Navarro

> I am seeing a strange issue with returning the OID that I 
> just walked using snprint_objid()  When I do a GETNEXT using 
> SNMP V1, the function returns the OID in a dotted number 
> notation (with the exception of the first number, which 
> always comes back as "iso"), so my OID returned looks like:  
> "iso.3.6.1.2.1.1.4.0"
>  
> However, when I do a GETNEXT using SNMP v3, snprint_objid() 
> returns the OID in a "MIB::oidname.number" format instead, 
> e.g. "SNMPv2-MIB::sysContact.0"

	Then v3/v1 is not the only difference between the two commands.  You have MIBs available in your v3 environment, but not your v1 environment.  Passing `-M ""` to your v3 getnext command will make it display the .iso.3 format.

> Does anyone know why I might be seeing such a discrepancy?  
> Unfortunately, other parts of the application have grown to 
> rely on the OID coming back in the "iso.3.6.1..." format, so 
> I would like to find a way at a minimum to get OIDs returned 
> from V3 walks to look like their V1 counterparts (however it 
> would actually be handy if I could get the OID to return in 
> *both* formats for V1 and V3).  How would I do this?

	`-M all`

	Make sure you have your MIBDIRS env var pointed to the right place.  See the snmpcmd man page for full details.  I recommend reading that page top to bottom.

> Interestingly, the snmpget utility that was built on my 
> machine at the same time I built the net-snmp client library 
> always returns this in a  "MIB::oidname.number" format, 
> regardless of the version of the protocol used.  

	That's `-OS`.  Now go read the page to show how thankful you are.  ;-)


	HTH,

Mike

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