> ... you should be able to
> see if a packet goes out, if the agent receives it, if the agent sends a
> response and if the app receives it.

Thanks.  
My client logs:


Sending 93 bytes to UDP: [127.0.0.1]:161
0000: 30 5B 02 01  01 04 00 A0  54 02 04 77  0B 12 D2 02    0[......T..w....
0016: 01 00 02 01  00 30 46 30  0C 06 08 2B  06 01 02 01    .....0F0...+....
0032: 01 01 00 05  00 30 0C 06  08 2B 06 01  02 01 01 04    .....0...+......
0048: 00 05 00 30  0C 06 08 2B  06 01 02 01  01 05 00 05    ...0...+........
0064: 00 30 0C 06  08 2B 06 01  02 01 01 06  00 05 00 30    .0...+.........0
0080: 0C 06 08 2B  06 01 02 01  01 03 00 05  00             ...+.........


Resending 93 bytes to UDP: [127.0.0.1]:161
0000: 30 5B 02 01  01 04 00 A0  54 02 04 77  0B 12 D2 02    0[......T..w....
0016: 01 00 02 01  00 30 46 30  0C 06 08 2B  06 01 02 01    .....0F0...+....
0032: 01 01 00 05  00 30 0C 06  08 2B 06 01  02 01 01 04    .....0...+......
0048: 00 05 00 30  0C 06 08 2B  06 01 02 01  01 05 00 05    ...0...+........
0064: 00 30 0C 06  08 2B 06 01  02 01 01 06  00 05 00 30    .0...+.........0
0080: 0C 06 08 2B  06 01 02 01  01 03 00 05  00             ...+.........

GetSysValues: Timeout


and the agent logs:


Turning on AgentX master support.
NET-SNMP version 5.2.rc1

Received 93 bytes from UDP: [127.0.0.1]:49154
0000: 30 5B 02 01  01 04 00 A0  54 02 04 77  0B 12 D2 02    0[......T..w....
0016: 01 00 02 01  00 30 46 30  0C 06 08 2B  06 01 02 01    .....0F0...+....
0032: 01 01 00 05  00 30 0C 06  08 2B 06 01  02 01 01 04    .....0...+......
0048: 00 05 00 30  0C 06 08 2B  06 01 02 01  01 05 00 05    ...0...+........
0064: 00 30 0C 06  08 2B 06 01  02 01 01 06  00 05 00 30    .0...+.........0
0080: 0C 06 08 2B  06 01 02 01  01 03 00 05  00             ...+.........

Received SNMP packet(s) from UDP: [127.0.0.1]:49154
  GET message
    -- SNMPv2-MIB::sysDescr.0
    -- SNMPv2-MIB::sysContact.0
    -- SNMPv2-MIB::sysName.0
    -- SNMPv2-MIB::sysLocation.0
    -- SNMPv2-MIB::sysUpTime.0

Received 93 bytes from UDP: [127.0.0.1]:49154
0000: 30 5B 02 01  01 04 00 A0  54 02 04 77  0B 12 D2 02    0[......T..w....
0016: 01 00 02 01  00 30 46 30  0C 06 08 2B  06 01 02 01    .....0F0...+....
0032: 01 01 00 05  00 30 0C 06  08 2B 06 01  02 01 01 04    .....0...+......
0048: 00 05 00 30  0C 06 08 2B  06 01 02 01  01 05 00 05    ...0...+........
0064: 00 30 0C 06  08 2B 06 01  02 01 01 06  00 05 00 30    .0...+.........0
0080: 0C 06 08 2B  06 01 02 01  01 03 00 05  00             ...+.........

Received SNMP packet(s) from UDP: [127.0.0.1]:49154
  GET message
    -- SNMPv2-MIB::sysDescr.0
    -- SNMPv2-MIB::sysContact.0
    -- SNMPv2-MIB::sysName.0
    -- SNMPv2-MIB::sysLocation.0
    -- SNMPv2-MIB::sysUpTime.0


It seems that the communication is one-way; the agent doesn't say anything about 
sending a packet back to the client.



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