How to add a SNMPV3 trap!

 I'm in trouble with the configuration of the snmpv3 trap.
I used create_trap_session  to add the session list in order to create the trap list. I can use SNMP_VERSION_1 and SNMP_VERSION_2C. But when i use SNMP_VERSION_3 as the param of the create_trap_session, it returns 0.
The source code is listed as follows:

    INT pdutype = SNMP_MSG_TRAP2;
    ...
    ...    
    if (SNMP_TRAP_V1 == liVersion)
    {
        pdutype = SNMP_MSG_TRAP;
    }
   else if (SNMP_VERSION_V2C != liVersion)
   {
       liVersion = SNMP_VERSION_3;
   }
    ...
    /* create a trap session and add to Session & Sinks. */
    ret = create_trap_session((CHAR *)acRemoteIp, usPort, 
                              (CHAR *)acCommunity, liVersion, pdutype); 
   ...

When the liVersion is set to  SNMP_VERSION_1 or SNMP_VERSION_2C, ret is 1. However, ret is 0 as the liVersion is set to SNMP_VERSION_3.

I'm already read the source code of net-snmp for many times. But i can't find the reason of this phenomena.

The error msg is listed as follows:

trace: snmp_synch_input(): snmp_client.c, 175:
snmp_synch: Response (ReqID: 711633531 - Cmd 160)
trace: snmpv3_engineID_probe(): snmp_api.c, 1396:
snmp_sess_open: unable to connect with remote engine: Timeout (-24)
trace: snmpv3_engineID_probe(): snmp_api.c, 1402:
snmp_api: unable to determine remote engine ID
snmp_sess_add: engine ID probe failed
snmpd: create_trap_session: Timeout

Help!





2012-05-15 



Rainforest.Peng  |  Software Engineer 
SHENZHEN TENDA TECHNOLOGY CO.,LTD

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