Fwd: snmpwalk & snmpget

permalink · #1 (**permalink**) 04-11-2008

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---------- Forwarded message ----------
From: Dave Shield <D.T.Shield@liverpool.ac.uk>
Date: 11 avr. 2008 12:33
Subject: Re: snmpwalk & snmpget
To: snmp girl <snmp.girl@gmail.com>
Cc: net-snmp-users@lists.sourceforge.net

On 11/04/2008, snmp girl <snmp.girl@gmail.com> wrote:
> here u fing what I get as a result

Thank you. That makes it much clearer.

[Though copying the text would have been sufficient.
You didn't actually need to attach a screen dump]

Anyway:

> D:\> snmpgetnext -c public -v1 localhost .1.3.6.1.4.1.311.1.4.1.1.5.1.2
> SNMPv2-SMI::enterprises.311.1.4.1.1.5.1.2.1.0 = STRING: "master"

So a GETNEXT request returns a value for
.1.3.6.1.4.1.311.1.4.1.1.5.1.2.0

We then told you to ask for this value using "snmpget"

> D:\> snmpget -c public -v1 localhost .1.3.6.1.4.1.311.1.4.1.1.5.1.2
> Error in packet
> Reason: (noSuchName)

But this command isn't asking for the OID .1.3.6.1.4.1.311.1.4.1.1.5.1.2.0
It's asking for the OID 1.3.6.1.4.1.311.1.4.1.1.5.1.2
(without the final .0)

And the agent is quite correct.
There isn't a value associated with 1.3.6.1.4.1.311.1.4.1.1.5.1.2
There's a value associated with 1.3.6.1.4.1.311.1.4.1.1.5.1.2.0

even with using this exact OID ,I get the same error
oid = 1.3.6.1.4.1.311.1.4.1.1.5.1.2.1.0
AND also with testing adding 0 to the oid used in the snmpgetnext

but you didn't ask for that.

If you are using "snmpget", you must request the *EXACT*
same OID as returned by snmpwalk/snmpgetnext.
These two commands will do a "fuzzy match" to return the
next valid OID value.
snmpget doesn't do this - it uses an *exact* match on the
specified OID. If you give it an invalid OID, then it'll
complain. (As here).

Dave

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<div> ---------- Forwarded message ---------- From: Dave Shield <<a href="mailto:D.T.Shield@liverpool.ac.uk">D.T.Shiel d@liverpool.ac.uk</a>> Date: 11 avr. 2008 12:33 
Subject: Re: snmpwalk & snmpget To: snmp girl <<a href="mailto:snmp.girl@gmail.com">snmp.girl@gmail. com</a>> Cc: <a href="mailto:net-snmp-users@lists.sourceforge.net">net-snmp-users@lists.sourceforge.net</a> 
 On 11/04/2008, snmp girl <<a href="mailto:snmp.girl@gmail.com">snmp.girl@gmail. com</a>> wrote: > here u fing what I get as a result Thank you.  That makes it much clearer. [Though copying the text would have been sufficient. 
  You didn't actually need to attach a screen dump] Anyway: > D:\> snmpgetnext -c public -v1 localhost .1.3.6.1.4.1.311.1.4.1.1.5.1.2 > SNMPv2-SMI::enterprises.311.1.4.1.1.5.1.2.1.0 = STRING: "master" 
 So a GETNEXT request returns a value for    .1.3.6.1.4.1.311.1.4.1.1.5.1.2.0 We then told you to ask for this value using "snmpget" > D:\> snmpget -c public -v1 localhost .1.3.6.1.4.1.311.1.4.1.1.5.1.2 
> Error in packet > Reason: (noSuchName) But this command isn't asking for the OID .1.3.6.1.4.1.311.1.4.1.1.5.1.2.0 It's asking for the OID 1.3.6.1.4.1.311.1.4.1.1.5.1.2 (without the final .0) 
 And the agent is quite correct. There isn't a value associated with 1.3.6.1.4.1.311.1.4.1.1.5.1.2 There's a value associated with 1.3.6.1.4.1.311.1.4.1.1.5.1.2.0</div>
<div> </div>
<div>even with using this exact OID ,I get the same error </div>
<div>oid = 1.3.6.1.4.1.311.1.4.1.1.5.1.2.1.0</div>
<div>AND also with testing adding 0 to the oid used in the snmpgetnext  </div>
<div>but you didn't ask for that. If you are using "snmpget", you must request the *EXACT* same OID as returned by snmpwalk/snmpgetnext. These two commands will do a "fuzzy match" to return the 
next valid OID value.   snmpget doesn't do this - it uses an *exact* match on the specified OID.   If you give it an invalid OID, then it'll complain.  (As here). Dave  </div>

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