Hello there, I am working on a datacollector using the Net-SNMP 5.4.1, programming is done in Perl using the SNMP.pm and SNMP::Multi.pm.
I found a Bug in Net-SNMP regarding the handling of recieving and matching Get-Response to the coresponding Get-Request. I am using SNMPv2C. For me, it looks like that there is a problem when there are multiple snmp-packets on wire. If one get-response packet is recieved by the agent after the timeout for the coresponding get-request already had toke place. (the Agent will now start resending the request, with a new snmp request id). It will now collect the late packet, regardless of its request id. Thats where the mess starts. Now we have the wrong (old) Get-Response packed to the new Get-request. On the lowlevel of the Net-SNMP Agent this is not noticed. But Perls SNMP.pm do. It gets the Info that there was a package recieved, and start to look up in the returned object (like structure) for the matching response, but cannot find it (because request-ids donŽt match I think). If this happens once, there is a Chainreaction. Each further get-response is bound to the wrong get request. And I endup with a bunch of data garbage. I allready had this Bug in 5.1.4 and it is still there. (I had a hard time building net-snmp 5.4.1 on my aix, thought). If somebody is interessed in verifying or even fixing this Bug, I would send the Tracefiles (net:snmp debugging level 3 25mb and 35mb of iptrace udp) . (The containing data represents our development network, so no security is violated. ) Thanks, Boa _____________________________________________________________________ Der WEB.DE SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! http://smartsurfer.web.de/?mc=100071&distributionid=000000000066 ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
