Hello. I would appreciate some help getting started with building a subagent using mib2c and MFD. I'm trying to build a simple example to handle a table. (I did a scalar first, and that seemed worked fine, so this is the next step...)
I have net-snmp version 5.5. I do: > mib2c -c mib2c.mfd.conf netSnmpIETFWGTable (Mostly I select default options. I've tried various permutations. I had to select the non-default m2c_data_transient = 0, otherwise I couldn't get the generated code to compile. I made sure I had a text file at /etc/dummy.conf.) > make -f make -f netSnmpIETFWGTable_Makefile > sudo ./netSnmpIETFWGTable -f -L -DALL NET-SNMP version 5.5 AgentX subagent connected ... Looks good, but then > snmpget -v1 -c public localhost nsIETFWGChair1 Error in packet Reason: (noSuchName) There is no such variable name in this MIB. Failed object: NET-SNMP-EXAMPLES-MIB::nsIETFWGChair1 Below is a snippet from the the subagent debug, which seems to contain a few clues, but I can't work out what's really going wrong. Can anyone help? Thanks, Alec ************ sess_process_packet: session 0x8e3e9f8 fd 7 pkt 0x8e51da8 length 56 trace: agentx_parse_header(): mibgroup/agentx/protocol.c, 1472: dumph_recv: AgentX Header trace: agentx_parse_header(): mibgroup/agentx/protocol.c, 1473: dumph_recv: Version dumpx_recv: 01 dumpv_recv: Version: 1 trace: agentx_parse_header(): mibgroup/agentx/protocol.c, 1480: dumph_recv: Command dumpx_recv: 05 dumpv_recv: Command: 5 (Get) trace: agentx_parse_header(): mibgroup/agentx/protocol.c, 1488: dumph_recv: Flags dumpx_recv: 00 dumpv_recv: Flags: 0x0 trace: agentx_parse_header(): mibgroup/agentx/protocol.c, 1495: dumph_recv: Reserved Byte dumpx_recv: 00 dumpv_recv: Reserved: 0x0 trace: agentx_parse_header(): mibgroup/agentx/protocol.c, 1501: dumph_recv: Session ID dumpx_recv: 05 00 00 00 dumpv_recv: Integer: 5 (0x05) trace: agentx_parse_header(): mibgroup/agentx/protocol.c, 1509: dumph_recv: Transaction ID dumpx_recv: 02 00 00 00 dumpv_recv: Integer: 2 (0x02) trace: agentx_parse_header(): mibgroup/agentx/protocol.c, 1517: dumph_recv: Packet ID dumpx_recv: 03 00 00 00 dumpv_recv: Integer: 3 (0x03) trace: agentx_parse_header(): mibgroup/agentx/protocol.c, 1524: dumph_recv: Payload Length dumpx_recv: 24 00 00 00 dumpv_recv: Integer: 36 (0x24) trace: agentx_parse(): mibgroup/agentx/protocol.c, 1626: dumph_recv: PDU trace: agentx_parse(): mibgroup/agentx/protocol.c, 1748: dumph_recv: Search Range trace: agentx_parse_oid(): mibgroup/agentx/protocol.c, 1129: dumph_recv: OID Header dumpx_recv: 07 04 00 00 dumpv_recv: # subids: 7 (0x07) trace: agentx_parse_oid(): mibgroup/agentx/protocol.c, 1133: dumpv_recv: prefix: 4 (0x04) trace: agentx_parse_oid(): mibgroup/agentx/protocol.c, 1136: dumpv_recv: inclusive: 0 (0x00) trace: agentx_parse_oid(): mibgroup/agentx/protocol.c, 1141: dumph_recv: OID Segments parse_oid sizeof(oid) = 4 dumpx_recv: 01 00 00 00 dumpv_recv: Integer: 1 (0x01) dumpx_recv: 88 1F 00 00 dumpv_recv: Integer: 8072 (0x1F88) dumpx_recv: 02 00 00 00 dumpv_recv: Integer: 2 (0x02) dumpx_recv: 02 00 00 00 dumpv_recv: Integer: 2 (0x02) dumpx_recv: 01 00 00 00 dumpv_recv: Integer: 1 (0x01) dumpx_recv: 01 00 00 00 dumpv_recv: Integer: 1 (0x01) dumpx_recv: 02 00 00 00 dumpv_recv: Integer: 2 (0x02) trace: agentx_parse_oid(): mibgroup/agentx/protocol.c, 1216: dumpv_recv: OID: NET-SNMP-EXAMPLES-MIB::nsIETFWGChair1 trace: agentx_parse_oid(): mibgroup/agentx/protocol.c, 1129: dumph_recv: OID Header dumpx_recv: 00 00 00 00 dumpv_recv: # subids: 0 (0x00) trace: agentx_parse_oid(): mibgroup/agentx/protocol.c, 1133: dumpv_recv: prefix: 0 (0x00) trace: agentx_parse_oid(): mibgroup/agentx/protocol.c, 1136: dumpv_recv: inclusive: 0 (0x00) trace: agentx_parse_oid(): mibgroup/agentx/protocol.c, 1141: dumph_recv: OID Segments parse_oid sizeof(oid) = 4 trace: agentx_parse_oid(): mibgroup/agentx/protocol.c, 1163: dumpv_recv: OID: NULL (0.0) trace: _sess_process_packet(): snmp_api.c, 5416: sess_process_packet: received message id#0 reqid#3 trace: handle_agentx_packet(): mibgroup/agentx/subagent.c, 309: agentx/subagent: handling agentx request (req=0x3,trans=0x2,sess=0x5) trace: handle_agentx_packet(): mibgroup/agentx/subagent.c, 330: agentx/subagent: -> get trace: netsnmp_callback_hook_build(): snmpCallbackDomain.c, 455: transport_callback: hook_build enter trace: netsnmp_callback_hook_build(): snmpCallbackDomain.c, 530: transport_callback: hook_build exit trace: _sess_async_send(): snmp_api.c, 5122: sess_process_packet: sending message id#0 reqid#3 trace: netsnmp_callback_send(): snmpCallbackDomain.c, 239: transport_callback: hook_send enter trace: callback_debug_pdu(): snmpCallbackDomain.c, 91: dump_send_callback_transport: PDU: command = 160, errstat = 0, errindex = 0 trace: callback_debug_pdu(): snmpCallbackDomain.c, 93: dump_send_callback_transport: var 2:trace: sprint_realloc_by_type(): mib.c, 1961: output: sprint_by_type, type 195 trace: sprint_realloc_by_type(): mib.c, 2021: sprint_by_type: bad type: 195 NET-SNMP-EXAMPLES-MIB::nsIETFWGChair1 = Wrong Type (should be OCTET STRING): Variable has bad type trace: netsnmp_callback_send(): snmpCallbackDomain.c, 326: transport_callback: hook_send exit trace: _sess_read(): snmp_api.c, 5705: sess_read: not reading 5 (fdset 0xbfaba418 set 0) trace: _sess_read(): snmp_api.c, 5705: sess_read: not reading 3 (fdset 0xbfaba418 set 0) trace: snmp_sess_select_info2(): snmp_api.c, 6188: sess_select: for all sessions: 7 5 (to in 1298023591.117603 sec) 3 sess_select: next alarm 3.552210 sec verbose:sess_select: timer due in 3.552210 sec verbose:sess_select: setting timer to 3.552210 sec, clear block (was 0) trace: _sess_read(): snmp_api.c, 5705: sess_read: not reading 7 (fdset 0xbfaba418 set 0) trace: _sess_read(): snmp_api.c, 5705: sess_read: not reading 5 (fdset 0xbfaba418 set 0) trace: netsnmp_callback_recv(): snmpCallbackDomain.c, 190: transport_callback: hook_recv enter trace: netsnmp_callback_recv(): snmpCallbackDomain.c, 216: transport_callback: hook_recv exit trace: _sess_process_packet(): snmp_api.c, 5357: sess_process_packet: session 0x8dff5e8 fd 3 pkt 0x8e51da8 length 1 trace: callback_debug_pdu(): snmpCallbackDomain.c, 91: dump_recv_callback_transport: PDU: command = 160, errstat = 0, errindex = 0 trace: callback_debug_pdu(): snmpCallbackDomain.c, 93: dump_recv_callback_transport: var 2:trace: sprint_realloc_by_type(): mib.c, 1961: output: sprint_by_type, type 195 trace: sprint_realloc_by_type(): mib.c, 2021: sprint_by_type: bad type: 195 NET-SNMP-EXAMPLES-MIB::nsIETFWGChair1 = Wrong Type (should be OCTET STRING): Variable has bad type trace: _sess_process_packet(): snmp_api.c, 5416: sess_process_packet: received message id#0 reqid#3 trace: init_agent_snmp_session(): snmp_agent.c, 1352: snmp_agent: agent_sesion 0x8e3f098 created trace: init_agent_snmp_session(): snmp_agent.c, 1367: verbose:asp: asp 0x8e3f098 reqinfo 0x8e3e028 created trace: netsnmp_subtree_find_first(): agent_registry.c, 288: subtree: looking for subtree for context: "" trace: netsnmp_subtree_find_first(): agent_registry.c, 292: subtree: found one for: "" trace: netsnmp_subtree_find_prev(): agent_registry.c, 1522: wtest: oid in: NET-SNMP-EXAMPLES-MIB::nsIETFWGChair1 trace: netsnmp_subtree_find_prev(): agent_registry.c, 1533: wtest: oid cmp: ccitt --- off = 0, in off = 0 test = 1 trace: netsnmp_subtree_find_prev(): agent_registry.c, 1533: wtest: oid cmp: iso --- off = 1, in off = 1 test = 1 trace: netsnmp_subtree_find_prev(): agent_registry.c, 1533: wtest: oid cmp: NET-SNMP-EXAMPLES-MIB::netSnmpIETFWGTable --- off = 2, in off = 2 test = 1 trace: netsnmp_subtree_find_prev(): agent_registry.c, 1533: wtest: oid cmp: NET-SNMP-EXAMPLES-MIB::netSnmpHostsTable --- off = 10, in off = 11 test = 1 trace: netsnmp_add_varbind_to_cache(): snmp_agent.c, 1947: snmp_agent: add_vb_to_cache(0x8e3f098, 1, NET-SNMP-EXAMPLES-MIB::nsIETFWGChair1, 0x8e00970) trace: netsnmp_add_varbind_to_cache(): snmp_agent.c, 2018: snmp_agent: tp->start NET-SNMP-EXAMPLES-MIB::netSnmpIETFWGTable, tp->end NET-SNMP-EXAMPLES-MIB::netSnmpHostsTable, trace: netsnmp_add_varbind_to_cache(): snmp_agent.c, 2038: verbose:asp: asp 0x8e3f098 reqinfo 0x8e3e028 assigned to request trace: netsnmp_add_varbind_to_cache(): snmp_agent.c, 2045: verbose:asp: asp 0x8e3f098 reqinfo 0x8e3e028 assigned to request trace: netsnmp_call_handlers(): agent_handler.c, 515: handler:calling: main handler bulk_to_next trace: netsnmp_call_handler(): agent_handler.c, 435: handler:calling: calling handler bulk_to_next for mode GET trace: netsnmp_call_handler(): agent_handler.c, 443: handler:returned: handler bulk_to_next returned 0 trace: netsnmp_call_handler(): agent_handler.c, 435: handler:calling: calling handler table for mode GET trace: table_helper_handler(): table.c, 199: helper:table:req: Got request for handler table: base oid:NET-SNMP-EXAMPLES-MIB::netSnmpIETFWGTable NET-SNMP-EXAMPLES-MIB::nsIETFWGChair1 trace: table_helper_handler(): table.c, 398: helper:table:col: have at least a column (2) trace: table_helper_handler(): table.c, 465: helper:table: not enough for indexes trace: table_helper_handler(): table.c, 522: helper:table: looking for 1 indexes trace: table_helper_handler(): table.c, 531: helper:table: oid indexes not complete: NET-SNMP-EXAMPLES-MIB::nsIETFWGChair1 trace: table_helper_handler(): table.c, 576: helper:table:results: found -1220307984 indexes trace: table_helper_handler(): table.c, 622: helper:table: invalid index(es) for table - skipping trace: netsnmp_call_handler(): agent_handler.c, 443: handler:returned: handler table returned 0 trace: netsnmp_handle_request(): snmp_agent.c, 3211: results: request results (status = 0): trace: netsnmp_handle_request(): snmp_agent.c, 3214: results: NET-SNMP-EXAMPLES-MIB::nsIETFWGChair1 = No Such Instance currently exists at this OID Consider the environment before printing this mail. 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