[SNMP4J] SNMP Agent isn't Emulating SNMP Device

[Frank Fock]

Hi,

The problem is easily solved by providing an MOAccess instance for
your columns. Sorry, the TestAgent example has a bug here. Thus,
for example, instead of

columns[c++] =
       new MOColumn(c, SMIConstants.SYNTAX_INTEGER, null);

one should have used

columns[c++] =
       new MOColumn(c, SMIConstants.SYNTAX_INTEGER,
                                 MOAccessImpl.ACCESS_READ_ONLY);

This should solve problem (1). Nevertheless, the next alpha
release will throw an NullPointerException if MOAccess is null at
construction time.

Regarding question (2):
A walk does a GETNEXT. Returing the lexicographically following
instance seems to me normal behavior or do I miss something here?

Best regards,
Frank


. . wrote:

>
> Now for my virtual UPS, I implemented the following:
>
>  private static DefaultMOTable createStaticUpsChargeTable() {
>    MOTableSubIndex[] subIndexes =
>        new MOTableSubIndex[] { new 
> MOTableSubIndex(SMIConstants.SYNTAX_INTEGER) };
>    MOTableIndex indexDef = new MOTableIndex(subIndexes, false);
>    MOColumn[] columns = new MOColumn[7];
>    int c = 0;
>    columns[c++] =
>        new MOColumn(c, SMIConstants.SYNTAX_INTEGER, null);
>    columns[c++] =
>        new MOColumn(c, SMIConstants.SYNTAX_INTEGER, null);
>    columns[c++] =
>        new MOColumn(c, SMIConstants.SYNTAX_INTEGER, null);
>    columns[c++] =
>        new MOColumn(c, SMIConstants.SYNTAX_INTEGER, null);
>    columns[c++] =
>        new MOColumn(c, SMIConstants.SYNTAX_INTEGER, null);
>    columns[c++] =
>        new MOColumn(c, SMIConstants.SYNTAX_INTEGER, null);
>    columns[c++] =
>        new MOColumn(c, SMIConstants.SYNTAX_INTEGER, null);
>
>  
> When I walk my virtual UPS I get:
>
> OID: 1.3.6.1.2.1.33.1.2.1.0  type: snmp.SNMPInteger  value: 2
> OID: 1.3.6.1.2.1.33.1.2.2.0  type: snmp.SNMPInteger  value: 0
> OID: 1.3.6.1.2.1.33.1.2.3.0  type: snmp.SNMPInteger  value: 0
> OID: 1.3.6.1.2.1.33.1.2.4.0  type: snmp.SNMPInteger  value: 100
> OID: 1.3.6.1.2.1.33.1.2.5.0  type: snmp.SNMPInteger  value: 1118
> OID: 1.3.6.1.2.1.33.1.2.6.0  type: snmp.SNMPInteger  value: 0
> OID: 1.3.6.1.2.1.33.1.2.7.0  type: snmp.SNMPInteger  value: 25
>
> AND
>
> OID: 1.3.6.1.2.1.33.1.3.3.1.3.1.1  type: snmp.SNMPInteger  value: 1
> OID: 1.3.6.1.2.1.33.1.3.3.1.3.2.1  type: snmp.SNMPInteger  value: 599
> OID: 1.3.6.1.2.1.33.1.3.3.1.3.3.1  type: snmp.SNMPInteger  value: 208
> OID: 1.3.6.1.2.1.33.1.3.3.1.3.4.1  type: snmp.SNMPInteger  value: 0
> OID: 1.3.6.1.2.1.33.1.3.3.1.3.5.1  type: snmp.SNMPInteger  value: 0
>
> This *looks* correct until I try to get OID's:
>
> Exception during retrieval:  snmp.SNMPGetException: OID 
> 1.3.6.1.2.1.33.1.2.4.0 not available for retrieval
>
> AND
>
> OID: 1.3.6.1.2.1.33.1.3.3.1.3.1  type: snmp.SNMPNull  value: Null
>
> -------------------------------------------------------------------
>
> 1) How can I make my SNMP4J Agent better emulate the actual SNMP device?
>
> -------------------------------------------------------------------
>
> 2) In addition, the walk of the actual UPS yielded 
> "1.3.6.1.2.1.33.1.3.3.1.3.1", but I KNOW that the actual OID being 
> querried is actually "1.3.6.1.2.1.33.1.3.3.1.3".
>
>
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