Hi Dave,

Many thanks for your response and suggestion.

I would like to inform that I am trying to learn SNMP form William
Stallings SNMP,SNMPV2,Snmpv3,and RMON 1 and 2. In this book it is
mentioned that noSuchInstance will be put in the value field .But it was
not clear for me that it is a different type it self.

I would earnestly request you to suggest how SNMP can be learned in
better manner.


>> I would like to verify my understanding.
>> So "noSuchInstance" is a ASN1 type.

>Sort of.
>See RFC 1905, section 3 for the definition of the VarBind structure.
>> I would like to know more about how the coding is being done. Could

>> please suggest me which RFC I can follow?

>RFC 1905 is the document that describes SNMPv2
>(though the lowest level of encoding a request into the
>packet that's actually sent over the network follows the
>Basic Encoding Rules, which is an ISO standard).
>> Or how it is done in NetSnmp .

>See snmplib - especially snmp_api.c and asn1.c
>But I would suggest that this probably isn't the best way
>to learn about SNMP. You would be much better off buying
>a good book and studying that.

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