Hi All My Problem is specifically related to building a snmp manager extension for Tcl using the net-snmp provided apis. I am quite new to net-snmp & do not have much insight in the code so I apologize in advance if this issue has cropped up before in this list.
I am trying to write a Tcl extension module using the common APIs of net-snmp for creating some snmp sessions & operations. SNMP Sessions contain all the netsnmp_session parameters which can be set or accessed Operations involve the usual SNMP operations like get, set, getbulk etc.. which operate on the sessions. Earlier I tried the usual examples provided in the net-snmp wiki pages and successfully created small programs but now when I converted those program to Tcl extensions I face the following problem which is specific to snmp V3. the problem is as follows 1) I create two snmp sessions snmp0 & snmp1. 2) I configure snmp0 with version 3 and all the mandatory related parameters like security name, securitylevel, protocol, passwords, peername etc. 3) I also configure snmp1 with version 3 and same parameters except a different peername. ( both peernames are setup and tested with snmpget commands ) 4) I have defined a status command which does a get on the sysName MIB and returns the value as a indication of wheather the remote peer is alive or not 5) when i invoke status command with snmp0 i get the response but for snmp1 i get the following error "no such security service available :0 snmp_build, unknown failure " I am aware that this problem comes if we do not call init_snmp( ) function at the start but, in my Tcl extension I call this function inside my module initialization code ,before I do any netsnmp related operation. After several reruns I noticed that this happens with all the sessions except for the one which was configured first. i.e in my case it happens with snmp1 since snmp1 was configured ( with version 3 specific data ) after snmp0. If I restart the application and configure snmp1 before snmp0 then snmp0 will have this problem. After putting init_snmp( ) at several places I get the same result . I even tried adding the init_snmp( ) call to TCL initilaization source and recompiling the TCL binary but by doing that nothing works and for every session I get the same error. I am sure that this happens due to some initialization problem ( something related to the registering of security services at startup ) but it works fine in a application written in C even with multiple V3 sessions. And the same C code used as Tcl extension does not work. I would like to know if anyone has faced similar problem or if there can be a workaround to this problem. thanks in advance Shyam ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Net-snmp-coders mailing list Net-snmp-coders@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/net-snmp-coders
