Hi,
I intended to implement a subagent with all tables in a MIB (ENTITY-MIB)
using handlers for each separately. Up on requesting a particualr table
data, net-snmp is triggering handlers for other tables also in that MIB
which are not wanted. How to avoid such unncessary handler triggers ? The
problem exists even if each table is implemented in separate subagent
processes.
reg = netsnmp_create_handler_registration(
"entPhysicalTable", entPhysicalTable_handler,
entPhysicalTable_oid, entPhysicalTable_oid_len,
HANDLER_CAN_RWRITE
);
table_info->min_column = COLUMN_ENTPHYSICALDESCR;
table_info->max_column = COLUMN_ENTPHYSICALURIS;
iinfo = SNMP_MALLOC_TYPEDEF( netsnmp_iterator_info );
iinfo->get_first_data_point = entPhysicalTable_get_first_data_point;
iinfo->get_next_data_point = entPhysicalTable_get_next_data_point;
iinfo->table_reginfo = table_info;
netsnmp_register_table_iterator2( reg, iinfo );
similarly other 4 tables in ENTITY-MIB are also initialized in the
subagent.
Now, an snmp request for one table data is triggering get_first,get_next &
handlers of other table registrations as well which is wrong.
===master is running ====
sudo snmpd -f -Lo -C --rwcommunity=public --master=agentx
Turning on AgentX master support.
NET-SNMP version 5.7.3
===== snmp request from user =====
snmptable -v 2c -c public -M+. -Ci localhost ENTITY-MIB::entPhysicalTable
===== debug prints from my subagent code ========
sreek : ------------ subagent_entityMIB in while loop
sreek : entPhysicalTable_get_first_data_point ---
sreek : entPhysicalTable_handler @@@ MODE_GET inclu=0
sreek : ------------ subagent_entityMIB in while loop
sreek : entPhysicalTable_get_first_data_point ---
.......
......
sreek : entLogicalTable_get_first_data_point ---
sreek : entLogicalTable_handler @@@ MODE_GET inclu=0
sreek : entLPMappingTable_get_first_data_point ---
.......
sreek : entLPMappingTable_handler @@@ MODE_GET inclu=0
sreek : ------------ subagent_entityMIB in while loop
.......
sreek : entAliasMappingTable_get_first_data_point ---
sreek : entAliasMappingTable_handler @@@ MODE_GET inclu=0
.......
sreek : entPhysicalContainsTable_get_first_data_point ---
sreek : entPhysicalContainsTable_handler @@@ MODE_GET inclu=0
Thanks,
Sreek
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