? Agent++ & MIB

[Kumar, Vinay 2]

Hello Frank,

Thanks for the reply.

This all confusion came into my mind because in David Perkins book of
"Understanding SNMP MIBs", on page 28 in paragraph after figure 2-10, it has
been written that :

1. for Table Identifier : we use prefix describing Table & suffix of Table,
like ifTable
2. Row Identifier : we use the same prefix as Table & suffix of Entry, like
ifEntry.

****************************************************************************
*********************************
So i thought that OID(MibTable created in Source code) == OID (ifTable)
But, now you correct me up that it is of ifEntry, [ i find it nowhere
documented ]
****************************************************************************
*********************************

on the basis of the example, i have asked you, i have written a mib.
pl. correct me, if i'm right.

MINE DEFINITIONS ::= BEGIN

IMPORTS
        enterprises
              FROM RFC1155-SMI
        DisplayString
              FROM RFC1213-MIB
        OBJECT-TYPE
              FROM RFC-1212;

        mine  OBJECT IDENTIFIER ::= { enterprises 555.55 }

        ifTable       OBJECT-TYPE
              SYNTAX      SEQUENCE OF IfEntry
              ACCESS      not-accessible
              STATUS      mandatory
              DESCRIPTION "OID(Table) = 1.3.6.1.4.1.555.55.1"
              ::= { mine 1}

         ifEntry      OBJECT-TYPE
              SYNTAX       IfEntry
              ACCESS      not-accessible
              STATUS      mandatory
              DESCRIPTION
               "OID(Entry) = "1.3.6.1.4.1.555.55.1.1
                The desired ROW ranges between 0..255"
              INDEX { col1, col2, col3, col4 }
              ::= { ifTable 1 }

         IfEntry ::= SEQUENCE
              {
                  col1          INTEGER,
                  col2          DisplayString,
                  col3          INTEGER,
                  col4          DisplayString
              }
        col1  OBJECT-TYPE
              SYNTAX      INTEGER(0..255)
              ACCESS      not-accessible
              STATUS      mandatory
              DESCRIPTION "OID(col1) = 1.3.6.1.4.1.555.55.1.1.0"
              ::= { ifEntry 0 }
        col2  OBJECT-TYPE
              SYNTAX      DisplayString (SIZE (0..12))
              ACCESS      not-accessible
              STATUS      mandatory
              DESCRIPTION    "OID(col2) = 1.3.6.1.4.1.555.55.1.1.1"
              ::= { ifEntry 1 }
        col3 OBJECT-TYPE
              SYNTAX      INTEGER(-20000..20000)
              ACCESS      not-accessible
              STATUS      mandatory
              DESCRIPTION "OID(col3) = 1.3.6.1.4.1.555.55.1.1.2"
              ::= { ifEntry 2 }
        col4  OBJECT-TYPE
              SYNTAX      DisplayString
              ACCESS      not-accessible
              STATUS      mandatory
              DESCRIPTION "OID(col4) = 1.3.6.1.4.1.555.55.1.1.3"
              ::= { ifEntry 3 }
--
END
--

Isn't there any way in your framework to create the MIB using some API since
we design the whole thing in the code & your framework is completly aware of
the MIB we are creating.

Thanks & regards.

VINK


-----Original Message-----
From: Frank.Fock____t-online.de [mailto:Frank.Fock____t-online.de]
Sent: Monday, May 28, 2001 11:33 PM
To: Kumar, Vinay 2
Cc: 'agentpp-dl____agentpp.com'
Subject: Re: ? Agent++ & MIB


Hi Vinay,

Please find my answer inline:

"Kumar, Vinay 2" wrote:

> Table::Table (string anOID): MibTable (anOID.c_str(), 0, FALSE)
> {
> instance = this;                                //col  =
> add_col (new Property (parameter1));    //1
> add_col (new Property (parameter2));    //2
> add_col (new Property (parameter3));    //3
> add_col (new Property (parameter4));    //4
> add_col (new Property (parameter5));    //5
> }
> ///////////
> void Table::AddRow (char* numRow)
> {
>     add_row (numRow);
> }
> ///////////
> void mainProcedure(Mib* mib)
> {
> Table *T = new Table("1.3.6.1.4.1.555.55");
> t->AddRow("1"); //row = 1
> t->AddRow("2"); //row = 2
> mib->add(T);
> }
> //////////
>
> ?how do i show this structure in the MIB file.

It seems that your qustion is a basic one. Did you read
already "Understanding SNMP MIBs" by D. Perkins?
It is a really good book and it explains tables thoroughly.

>
> ?what OID i give if i want to access 5th column of the 2nd row.
>

You should create your table with:
Table *T = new Table("1.3.6.1.4.1.555.55.1");
because AGENT++ needs the OID of the ENTRY object.

With the above  you would access the 5th column of the 2nd row with:
1.3.6.1.4.1.555.55.1.5.2

Best regards,
Frank