[erlang-questions] snmp security name problems

[Daniel Goertzen]

I am playing with erlang snmp managers, and am having trouble making my
first sync_get() command to a v3 agent work.  I am getting
"unknownSecurityName" (see below), and I am stumped as to what might be
wrong.


I have What's Up Gold polling my v3 agent device, so I know the agent's SNMP
is working well.

Any suggestions?
Thanks,
Dan.



PS C:\cygwin\home\goertzen\bulk_config\srpc\ebin> C:\erlang\bin\erl.exe
-config C:\erlsnmp\sys.config
Eshell V5.8.2  (abort with ^G)
1> crypto:start().
ok
2> snmp:start().
ok
3> snmpm:which_agents().
["myagent"]
4> snmpm:which_usm_users().
[{"hemi","abc123"}]
5> snmpm:usm_user_info("hemi", "abc123",sec_name).
{ok,"abc123"}
6> snmpm:sync_get(defaultuser, "myagent", [[1,3,6,1,2,1,1,1]]).

=ERROR REPORT==== 30-Apr-2011::15:15:46 ===
[ snmp : manager : snmpm_mpd : <0.61.0> ]
MPD: CONFIG ERROR: unknownSecurityName (message: {message,'version-3',
                                                  {v3_hdr,1261510722,484,
                                                   [7],
                                                   3,undefined,undefined},

 [48,65,4,32,56,48,58,48,48,
                                                   58,54,51,58,57,102,58,48,

51,58,48,48,58,52,48,58,53,
                                                   51,58,48,56,58,52,102,58,
                                                   55,51,4,0,160,27,2,4,92,
                                                   103,199,2,2,1,0,2,1,0,48,

13,48,11,6,7,43,6,1,2,1,1,
                                                   1,5,0]})

{error,{send_failed,1550305026,unknownSecurityName}}
7>


usm.conf:
%% {EngineID, UserName, AuthP, AuthKey, PrivP, PrivKey}.
%% {EngineID, UserName, SecName, AuthP, AuthKey, PrivP, PrivKey}.
{"hemi", "abc123", "abc123",
usmHMACMD5AuthProtocol,
[122,254,237,74,242,75,191,73,255,25,189,190,102,250,156,25], % from
snmp:passwd2localized_key(md5,"abc123456","hemi")
usmDESPrivProtocol,
[122,254,237,74,242,75,191,73,255,25,189,190,102,250,156,25]  % from
snmp:passwd2localized_key(md5,"abc123456","hemi")
}.

agents.conf:
%% {UserId,
%%  TargetName, Comm, Ip, Port, EngineID, Timeout,
%%  MaxMessageSize, Version, SecModel, SecName, SecLevel}
%%
{ defaultuser, "myagent", "", [192,168,1,50], 162, "engineid", infinity,
484, v3, usm, "abc123", authPriv }.

users.conf:
{defaultuser, snmpm_user_default, "dummy"}.

manager.conf:
{port, 5000}.
{address, [192,168,1,104]}.
{engine_id, "hemi"}.
{max_message_size, 484}.

sys.config:
[{snmp,
  [
   {manager,
    [
     {priority, normal},
     {versions, [v3]},
     {config, [{dir, "c:/erlsnmp/"}, {verbosity, silence}, {db_dir,
"c:/erlsnmp/data/"}, {repair, true}, {auto_save, 5000}]},
     {inform_request_behaviour, auto},
     {mibs, ["c:/erlang/lib/snmp-4.18/mibs/SNMPv2-MIB"]},
     {server, [{timeout,30000},{verbosity,silence}]},
     {note_store, [{timeout,30000},{verbosity,silence}]},
     {net_if,
[{module,snmpm_net_if},{verbosity,silence},{options,[{bind_to,false},{no_reuse,false}]}]}
    ]
   }
  ]
 }
].
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