[SNMP4J] getTable query/issue

[Kris Allsop]

I am access values from a table using the the getTable methods in
TableUtils for information coming from an Evertz Frame Controller. It is
an SNMP version 1 agent. 

For most information it seems to retrieve the the information correctly
but for one table with the following mib definition nothing is
returned..

-- Beginning of Quattro Instance Table

	instanceTable OBJECT-TYPE
      	SYNTAX SEQUENCE OF InstanceEntry
            ACCESS not-accessible
            STATUS mandatory
            DESCRIPTION
            		"	
					This table contains the main index for this MIB, the quattro
index.			
				"
	::= { quattroInstanceInfo 1 }

      instanceEntry OBJECT-TYPE
            SYNTAX InstanceEntry
            ACCESS not-accessible
            STATUS mandatory
            DESCRIPTION
            		"                              
					This entry object is used to access the objects in this table.
            		"
            INDEX { quattroInstance }
	::= { instanceTable 1 }

      InstanceEntry ::= SEQUENCE {
      	quattroInstance	INTEGER
      }     

      quattroInstance OBJECT-TYPE
      	SYNTAX INTEGER ( 2..15 )
            ACCESS read-only
            STATUS mandatory
            DESCRIPTION 
                           "		
					This is the main index in this table and the last index in every
other table
					in this MIB.  Each instance here represents the respectively slot
number in the
					frame. NOTE, the quattro takes up to instances, even though it is
referenced by
					this instance the actual card does not end unit the instance + 1
slot.		    
                           "
	::= { instanceEntry 1 }
    
-- End of Quattro Instance Table   














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This table is the basic table to say if any quattro card exist andd what
slot they are in.

There are 2 cards.

I can receive an SNMPV1 trap which refers to information in this table.

eg V1TRAP[reqestID=0, timestamp=9 days, 1:10:40.78,
enterprise=1.3.6.1.4.1.6827.10.14.7.1, genericTrap=6, specificTrap=1219,
VBS[1.3.6.1.4.1.6827.10.14.2.1.1.1.2 = 2]

And if i manually incrememt through it the following values are there:

Response is RESPONSE[reqestID=714025864, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.1 = Null]]
Response is RESPONSE[reqestID=1303076430, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.2 = 2]]
Response is RESPONSE[reqestID=1115126592, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.3 = Null]]
Response is RESPONSE[reqestID=1702830537, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.4 = 4]]
Response is RESPONSE[reqestID=1516227321, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.5 = Null]]
Response is RESPONSE[reqestID=2103738891, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.6 = Null]]
Response is RESPONSE[reqestID=1915981428, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.7 = Null]]
Response is RESPONSE[reqestID=1870773432, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.8 = Null]]
Response is RESPONSE[reqestID=1454482784, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.9 = Null]]
Response is RESPONSE[reqestID=1267302444, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.10 = Null]]
Response is RESPONSE[reqestID=1855198764, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.11 = Null]]
Response is RESPONSE[reqestID=1667056552, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.12 = Null]]
Response is RESPONSE[reqestID=108623470, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.13 = Null]]
Response is RESPONSE[reqestID=2068542029, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.14 = Null]]
Response is RESPONSE[reqestID=507608079, timestamp=0:00:00.00,
enterprise=, genericTrap=0, specificTrap=0, VBS
[1.3.6.1.4.1.6827.10.14.2.1.1.1.15 = Null]]

My knowledge of SNMP is pretty limited. Is there something i am missing
or is there something different i need to do with the gettable method to
make this work. 
At the moment i have tried calling getTable like this
tableUtil.getTable(target, columns_p, listener, counter, null, null);
and this :-
tableEvents = tableUtil.getTable(target, columns_p , null, null);

thanks for any advice..