The response you are receiving is incorrectly encoded. The data at
position 71 is "41 06 00 A2 0C 46 34 9D". The second byte represents
the invalid length of 6. You cannot create a valid 32 bits value from 6
bytes without overflow.
Signed and unsigned value are encoded the same way according to the
Basic Encoding Rules (BER) of ANS.1. The first bit in the encoding is a
sign bit. If it is one, then the value is negative. To properly encode
a large 32 bit unsigned value (which has the first bit set) you have to
prepend a byte with a value of 0 to the encoding. The length in this
case would be 5, with the first byte required to have a value of 0. The
_process_integer32() method handles this case.
You said "snmpwalk" works. Is it using SNMPv1 or SNMPv2? Can you try
using SNMPv1 with Net::SNMP? I have seen agents with broken v2
implementation while v1 works fine. Either way this is a problem with
the agent, not Net::SNMP.
On Wed Feb 15 07:53:13 2012, henrik.berg@barret.se wrote:
Show quoted text> Sure thing.
> Here is a bulkwalk of 1.3.6.1.2.1.2.2.1.10 where .1
> works but .2 fails.
> I've just replaced the community and ip with X's.
> A get of 1.3.6.1.2.1.2.2.1.10.2 specifically breaks in the same way.
> A quick question as well, isn't Counter32 supposed to be unsigned?
> Why then handle it like an Integer32?
>
> Thanks.
>
> debug: [440]
> Net::SNMP::Dispatcher::_event_insert(): created new head and tail
> [ARRAY(0xae2aea0)]
> debug: [687] Net::SNMP::Message::send(): transport
> address X.X.X.X:161
> debug: [2060] Net::SNMP::Message::_buffer_dump():
> 45 bytes
> [0000] 30 2B 02 01 01 04 07 XX XX XX XX XX XX XX A5 1D
> 0+.....XXXXXXX..
> [0016] 02 04 24 AC 60 A3 02 01 00 02 01 19 30 0F
> 30 0D ..$.`.......0.0.
> [0032] 06 09 2B 06 01 02 01 02 02 01 0A
> 05 00 ..+..........
> debug: [200]
> Net::SNMP::Dispatcher::register(): added handler for descriptor [3]
> debug: [462] Net::SNMP::Dispatcher::_event_insert(): modified tail
> [ARRAY(0xae2b370)]
> debug: [535]
> Net::SNMP::Dispatcher::_event_delete(): deleted [ARRAY(0xae2aea0)],
> defined new head [ARRAY(0xae2b370)]
> debug: [596]
> Net::SNMP::Dispatcher::_event_handle(): event [ARRAY(0xae2b370)],
> timeout = 9.9998
> debug: [621] Net::SNMP::Dispatcher::_event_handle():
> descriptor [3] ready for read
> debug: [711]
> Net::SNMP::Message::recv(): transport address X.X.X.194:161
> debug:
> [2060] Net::SNMP::Message::_buffer_dump(): 491 bytes
> [0000] 30 82 01
> E7 02 01 01 04 07 XX XX XX XX XX XX XX 0........XXXXXXX
> [0016]
> A2 82 01 D7 02 04 24 AC 60 A3 02 01 00 02 01 00 ......$.`.......
> [0032] 30 82 01 C7 30 13 06 0A 2B 06 01 02 01 02 02 01
> 0...0...+.......
> [0048] 0A 01 41 05 00 CC 99 CA 6D 30 14 06 0A 2B
> 06 01 ..A.....m0...+..
> [0064] 02 01 02 02 01 0A 02 41 06 00 A2
> 0C 46 34 9D 30 .......A....F4.0
> [0080] 0F 06 0A 2B 06 01 02 01
> 02 02 01 0A 03 41 01 00 ...+.........A..
> [0096] 30 12 06 0A 2B
> 06 01 02 01 02 02 01 0B 01 41 04 0...+.........A.
> [0112] 01 31
> 42 C7 30 13 06 0A 2B 06 01 02 01 02 02 01 .1B.0...+.......
> [0128] 0B 02 41 05 00 F4 04 25 8A 30 0F 06 0A 2B 06 01
> ..A....%.0...+..
> [0144] 02 01 02 02 01 0B 03 41 01 00 30 0F 06 0A
> 2B 06 .......A..0...+.
> [0160] 01 02 01 02 02 01 0D 01 41 01 00
> 30 0F 06 0A 2B ........A..0...+
> [0176] 06 01 02 01 02 02 01 0D
> 02 41 01 00 30 0F 06 0A .........A..0...
> [0192] 2B 06 01 02 01
> 02 02 01 0D 03 41 01 00 30 0F 06 +.........A..0..
> [0208] 0A 2B
> 06 01 02 01 02 02 01 0E 01 41 01 00 30 0F .+.........A..0.
> [0224] 06 0A 2B 06 01 02 01 02 02 01 0E 02 41 01 00 30
> ..+.........A..0
> [0240] 0F 06 0A 2B 06 01 02 01 02 02 01 0E 03 41
> 01 00 ...+.........A..
> [0256] 30 13 06 0A 2B 06 01 02 01 02 02
> 01 10 01 41 05 0...+.........A.
> [0272] 00 CC 99 CA 6D 30 13 06
> 0A 2B 06 01 02 01 02 02 ....m0...+......
> [0288] 01 10 02 41 05
> 29 FF EF EF 0C 30 0F 06 0A 2B 06 ...A.)....0...+.
> [0304] 01 02
> 01 02 02 01 10 03 41 01 00 30 12 06 0A 2B ........A..0...+
> [0320] 06 01 02 01 02 02 01 11 01 41 04 01 31 42 C7 30
> .........A..1B.0
> [0336] 12 06 0A 2B 06 01 02 01 02 02 01 11 02 41
> 04 74 ...+.........A.t
> [0352] 76 9E 10 30 0F 06 0A 2B 06 01 02
> 01 02 02 01 11 v..0...+........
> [0368] 03 41 01 00 30 0F 06 0A
> 2B 06 01 02 01 02 02 01 .A..0...+.......
> [0384] 13 01 41 01 00
> 30 0F 06 0A 2B 06 01 02 01 02 02 ..A..0...+......
> [0400] 01 13
> 02 41 01 00 30 0F 06 0A 2B 06 01 02 01 02 ...A..0...+.....
> [0416] 02 01 13 03 41 01 00 30 0F 06 0A 2B 06 01 02 01
> ....A..0...+....
> [0432] 02 02 01 14 01 41 01 00 30 0F 06 0A 2B 06
> 01 02 .....A..0...+...
> [0448] 01 02 02 01 14 02 41 01 00 30 0F
> 06 0A 2B 06 01 ......A..0...+..
> [0464] 02 01 02 02 01 14 03 41
> 01 00 30 0F 06 0A 2B 06 .......A..0...+.
> [0480] 01 02 01 02 02
> 01 15 01 42 01 00 ........B..
> debug: [965]
> Net::SNMP::PDU::_process_var_bind_list(): { 1.3.6.1.2.1.2.2.1.10.1 =>
> Counter: 3432630893 }
> error: [1438]
> Net::SNMP::Message::_process_integer32(): The Counter length is too
> long (6 bytes)
> error: [299]
> Net::SNMP::MessageProcessing::prepare_data_elements(): The Counter
> length is too long (6 bytes)
> error: [398]
> Net::SNMP::Dispatcher::_transport_response_received(): The Counter
> length is too long (6 bytes)
> debug: [517]
> Net::SNMP::Dispatcher::_event_delete(): deleted [ARRAY(0xae2b370)],
> list is now empty
> debug: [239] Net::SNMP::Dispatcher::deregister():
> removed handler for descriptor [3]
> error: [2363]
> Net::SNMP::__ANON__(): The Counter length is too long (6 bytes)
