Package: libsnmp-python Version: 5.4.2.1~dfsg-5+b1 Severity: important Tags: squeeze
When using the python bindings for net-snmp, I get errors when using snmpgetnext or snmpwalk. All installed software is from standard Debian distribution Detailed description: I try to communicate with a network device via SNMP. I send the same commands using command line tools and then using Python module libsnmp. The system is configured in such a way that I don't need to enter information about MIBS and paths on the commandline. The following command are taken form tutorial on http://www.net-snmp.org/wiki/index.php/TUT:snmpwalk ############################################## On Debian Squeeze: ============================================== Scenario 1: command line ~$ snmpget --version NET-SNMP version: 5.4.2.1 ~$ ip="192.168.52.221:160" ~$ com="public" ~$ snmpwalk -v 2c -c $com $ip sysDescr RFC1213-MIB::sysDescr.0 = STRING: "Some description" ~$ snmpgetnext -v 2c -c $com $ip sysDescr RFC1213-MIB::sysDescr.0 = STRING: "Some description" Everything works as expected ============================================== Scenario 2: libsnmp in Python, snmpgetnext ~$ python Python 2.5.5 (r255:77872, Apr 21 2010, 08:44:16) [GCC 4.4.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import netsnmp >>> oid = netsnmp.Varbind('sysDescr') >>> ip="192.168.52.221:160" >>> com="tester" >>> >>> res = netsnmp.snmpwalk(oid, Version = 2, DestHost = ip, Community = com); res error: walk: unknown python error (varlist)>>> >>> res = netsnmp.snmpwalk(oid, Version = 2, DestHost = ip, Community = com); res Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: expected string or Unicode object, NoneType found >>> An error occurs. Notice that I get a different error after the second try. ============================================== Scenario 3: libsnmp in Python, snmpwalk ~$ python Python 2.5.5 (r255:77872, Apr 21 2010, 08:44:16) [GCC 4.4.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> >>> import netsnmp >>> oid = netsnmp.Varbind('sysDescr') >>> ip="192.168.52.221:160" >>> com="tester" >>> res = netsnmp.snmpgetnext(oid, Version = 2, DestHost = ip, Community = com); res error: get: unknown python error>>> >>> res = netsnmp.snmpgetnext(oid, Version = 2, DestHost = ip, Community = com); res Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: expected string or Unicode object, NoneType found The same problem as in Scenario 2 ############################################## On Debian Lenny It works as expected (the same results as from commandline). Below is a version of SNMP and python ~$ snmpget --version NET-SNMP version: 5.4.1 ~$ python Python 2.5.2 (r252:60911, Jan 24 2010, 14:53:14) [GCC 4.3.2] on linux2 Type "help", "copyright", "credits" or "license" for more information. -- System Information: Debian Release: squeeze/sid APT prefers testing APT policy: (500, 'testing') Architecture: i386 (i686) Kernel: Linux 2.6.32-trunk-686 (SMP w/1 CPU core) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages libsnmp-python depends on: ii libc6 2.10.2-6 Embedded GNU C Library: Shared lib ii libsnmp15 5.4.2.1~dfsg-5+b1 SNMP (Simple Network Management Pr ii python 2.5.4-9 An interactive high-level object-o ii python-central 0.6.14+nmu2 register and build utility for Pyt libsnmp-python recommends no packages. libsnmp-python suggests no packages. -- no debconf information Legal Disclaimer: The information contained in this message may be privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and delete or destroy any copy of this message
