A few time a go I developed a SNMP subagent with its own MIB and until
now it worked perfectly. Since some days ago there is a part of the
tree that is not 'walkable'. After searching for a bug in my snmp
agent, I found (or suspect) that the problem can be in the MIB
intepretation.
The important parts of the MIB (3475 lines):
CounterIndex ::= TEXTUAL-CONVENTION
DISPLAY-HINT "d"
STATUS current
DESCRIPTION "A unique value, for each type of counter in
the managed system. "
SYNTAX Integer32 (0..65535)
As you can see the syntax range starts at 0.
Then, (after some other values) I define the first table for my MIB:
-- TABLE zone
zoneTable OBJECT-TYPE
SYNTAX SEQUENCE OF ZoneEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "Per Zone query Statistics"
::= { b9Zones 1 }
zoneEntry OBJECT-TYPE
SYNTAX ZoneEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "An entry for Per Zone query Statistics"
INDEX { zoneIndex }
::= { zoneTable 1 }
ZoneEntry::= SEQUENCE {
zoneIndex CounterIndex,
zoneName DisplayString,
b9zoneQueriesRequestv4 Counter32,
b9zoneQueriesRequestv6 Counter32,
[....]
zoneIndex OBJECT-TYPE
SYNTAX CounterIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "zone Table Index"
::= { zoneEntry 1 }
And just after it, the second table:
-- TABLE view
viewTable OBJECT-TYPE
SYNTAX SEQUENCE OF ViewEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "Outgoing queries per view"
::= { b9Views 1 }
viewEntry OBJECT-TYPE
SYNTAX ViewEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "An entry for Outgoing queries per view"
INDEX { viewIndex }
::= { viewTable 1 }
ViewEntry::= SEQUENCE {
viewIndex CounterIndex,
viewName DisplayString,
[...]
viewIndex OBJECT-TYPE
SYNTAX CounterIndex
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION "view Table Index"
::= { viewEntry 1 }
If your compare them they are practically the same struct (as they
are script-created). I checked the MIB with smilint and it gives a
PERFECT (no errors nor warnings).
Without my agent running, only checking the tree, I can do:
# snmptranslate -On BIND-MIB::zoneIndex.0
.1.3.6.1.4.1.8072.9999.9999.1768.1.5.1.1.1.0
But for viewTable:
# snmptranslate -On BIND-MIB::viewIndex.0
BIND-MIB::viewIndex.0: Unknown Object Identifier (Index out of range:
0 (viewIndex))
If I ask for a Index starting at any other number:
# snmptranslate -On BIND-MIB::viewIndex.11
.1.3.6.1.4.1.8072.9999.9999.1768.1.6.1.1.1.11
Why this different behavior?? I tried to remove the first table from
the MIB and viewIndex.0 still fails.
I remark that the same MIB was working in the past. Recently I
upgraded my Debian System form Lenny to Squeeze (stable) but both use
net-snmp 5.2.0.
Thanks for any hint
--
----------------------------------
Marc Franquesa
Lady 3Jane http://www.l3jane.net/
Nexus
------------------------------------------------------------------------------
What You Don't Know About Data Connectivity CAN Hurt You
This paper provides an overview of data connectivity, details
its effect on application quality, and explores various alternative
solutions. http://p.sf.net/sfu/progress-d2d
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