snmp: Patch 1125

    OTP-8478  [agent] Added very basic support for multiple SNMPv3 EngineIDs
              in a single agent.

8 files changed, 562 insertions, 263 deletions

diff --git a/lib/snmp/src/agent/snmpa.erl b/lib/snmp/src/agent/snmpa.erl
index 1c37d76074..87b191caed 100644
--- a/lib/snmp/src/agent/snmpa.erl
+++ b/lib/snmp/src/agent/snmpa.erl
@@ -61,7 +61,7 @@
 	 register_subagent/3, unregister_subagent/2, 
 
 	 send_notification/3, send_notification/4, send_notification/5,
-	 send_notification/6,
+	 send_notification/6, send_notification/7, 
 	 send_trap/3, send_trap/4,
 
 	 discovery/2, discovery/3, discovery/4, discovery/5, discovery/6, 
@@ -423,14 +423,23 @@ send_notification(Agent, Notification, Recv, Varbinds) ->
 send_notification(Agent, Notification, Recv, NotifyName, Varbinds) ->
     send_notification(Agent, Notification, Recv, NotifyName, "", Varbinds).
 
-send_notification(Agent, Notification, Recv, 
-		  NotifyName, ContextName, Varbinds) 
+send_notification(Agent, Notification, Recv, NotifyName, 
+		  ContextName, Varbinds) 
   when (is_list(NotifyName)  andalso 
 	is_list(ContextName) andalso 
 	is_list(Varbinds)) ->
     snmpa_agent:send_trap(Agent, Notification, NotifyName, 
 			  ContextName, Recv, Varbinds).
 
+send_notification(Agent, Notification, Recv, 
+		  NotifyName, ContextName, Varbinds, LocalEngineID) 
+  when (is_list(NotifyName)  andalso 
+	is_list(ContextName) andalso 
+	is_list(Varbinds) andalso 
+	is_list(LocalEngineID)) ->
+    snmpa_agent:send_trap(Agent, Notification, NotifyName, 
+			  ContextName, Recv, Varbinds, LocalEngineID).
+
 %% Kept for backwards compatibility
 send_trap(Agent, Trap, Community) ->
     send_notification(Agent, Trap, no_receiver, Community, "", []).
diff --git a/lib/snmp/src/agent/snmpa_agent.erl b/lib/snmp/src/agent/snmpa_agent.erl
index 648f5b53fa..f70885b2ec 100644
--- a/lib/snmp/src/agent/snmpa_agent.erl
+++ b/lib/snmp/src/agent/snmpa_agent.erl
@@ -30,7 +30,7 @@
 -export([subagent_set/2, 
 	 load_mibs/2, unload_mibs/2, which_mibs/1, whereis_mib/2, info/1,
 	 register_subagent/3, unregister_subagent/2,
-	 send_trap/6, 
+	 send_trap/6, send_trap/7, 
          register_notification_filter/5,
          unregister_notification_filter/2,
          which_notification_filter/1,
@@ -65,7 +65,7 @@
 %% Internal exports
 -export([init/1, handle_call/3, handle_cast/2, handle_info/2,
 	 terminate/2, code_change/3, tr_var/2, tr_varbind/1,
-	 handle_pdu/7, worker/2, worker_loop/1, do_send_trap/6]).
+	 handle_pdu/7, worker/2, worker_loop/1, do_send_trap/7]).
 
 -ifndef(default_verbosity).
 -define(default_verbosity,silence).
@@ -529,14 +529,15 @@ which_notification_filter(Agent) ->
 
 send_trap(Agent, Trap, NotifyName, CtxName, Recv, Varbinds) ->
     ?d("send_trap -> entry with"
-       "~n   self():     ~p"
-       "~n   Agent:      ~p [~p]"
-       "~n   Trap:       ~p"
-       "~n   NotifyName: ~p"
-       "~n   CtxName:    ~p"
-       "~n   Recv:       ~p"
-       "~n   Varbinds:   ~p", 
-       [self(), Agent, wis(Agent), Trap, NotifyName, CtxName, Recv, Varbinds]),
+       "~n   self():        ~p"
+       "~n   Agent:         ~p [~p]"
+       "~n   Trap:          ~p"
+       "~n   NotifyName:    ~p"
+       "~n   CtxName:       ~p"
+       "~n   Recv:          ~p"
+       "~n   Varbinds:      ~p", 
+       [self(), Agent, wis(Agent), 
+	Trap, NotifyName, CtxName, Recv, Varbinds]),
     Msg = {send_trap, Trap, NotifyName, CtxName, Recv, Varbinds}, 
     case (wis(Agent) =:= self()) of
 	false ->
@@ -545,6 +546,27 @@ send_trap(Agent, Trap, NotifyName, CtxName, Recv, Varbinds) ->
 	    Agent ! Msg
     end.
 
+send_trap(Agent, Trap, NotifyName, CtxName, Recv, Varbinds, LocalEngineID) ->
+    ?d("send_trap -> entry with"
+       "~n   self():        ~p"
+       "~n   Agent:         ~p [~p]"
+       "~n   Trap:          ~p"
+       "~n   NotifyName:    ~p"
+       "~n   CtxName:       ~p"
+       "~n   Recv:          ~p"
+       "~n   Varbinds:      ~p" 
+       "~n   LocalEngineID: ~p", 
+       [self(), Agent, wis(Agent), 
+	Trap, NotifyName, CtxName, Recv, Varbinds, LocalEngineID]),
+    Msg = 
+	{send_trap, Trap, NotifyName, CtxName, Recv, Varbinds, LocalEngineID}, 
+    case (wis(Agent) =:= self()) of
+	false ->
+	    call(Agent, Msg);
+	true ->
+	    Agent ! Msg
+    end.
+
 
 %% -- Discovery functions --
 
@@ -631,6 +653,7 @@ wis(Pid) when is_pid(Pid) ->
 wis(Atom) when is_atom(Atom) ->
     whereis(Atom).
 
+
 forward_trap(Agent, TrapRecord, NotifyName, CtxName, Recv, Varbinds) ->
     Agent ! {forward_trap, TrapRecord, NotifyName, CtxName, Recv, Varbinds}.
 
@@ -724,14 +747,36 @@ handle_info(worker_available, S) ->
 
 handle_info({send_trap, Trap, NotifyName, ContextName, Recv, Varbinds}, S) ->
     ?vlog("[handle_info] send trap request:"
-	  "~n   Trap:        ~p"
-	  "~n   NotifyName:  ~p"
-	  "~n   ContextName: ~p"
-	  "~n   Recv:        ~p" 
-	  "~n   Varbinds:    ~p", 
-	  [Trap,NotifyName,ContextName,Recv,Varbinds]),
+	  "~n   Trap:          ~p"
+	  "~n   NotifyName:    ~p"
+	  "~n   ContextName:   ~p"
+	  "~n   Recv:          ~p" 
+	  "~n   Varbinds:      ~p", 
+	  [Trap, NotifyName, ContextName, Recv, Varbinds]),
+    LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID, 
+    case catch handle_send_trap(S, Trap, NotifyName, ContextName,
+				Recv, Varbinds, LocalEngineID) of
+	{ok, NewS} ->
+	    {noreply, NewS};
+	{'EXIT', R} ->
+	    ?vinfo("Trap not sent:~n   ~p", [R]),
+	    {noreply, S};
+	_ ->
+	    {noreply, S}
+    end;
+
+handle_info({send_trap, Trap, NotifyName, ContextName, Recv, Varbinds, 
+	     LocalEngineID}, S) ->
+    ?vlog("[handle_info] send trap request:"
+	  "~n   Trap:          ~p"
+	  "~n   NotifyName:    ~p"
+	  "~n   ContextName:   ~p"
+	  "~n   Recv:          ~p" 
+	  "~n   Varbinds:      ~p" 
+	  "~n   LocalEngineID: ~p", 
+	  [Trap, NotifyName, ContextName, Recv, Varbinds, LocalEngineID]),
     case catch handle_send_trap(S, Trap, NotifyName, ContextName,
-				Recv, Varbinds) of
+				Recv, Varbinds, LocalEngineID) of
 	{ok, NewS} ->
 	    {noreply, NewS};
 	{'EXIT', R} ->
@@ -741,17 +786,18 @@ handle_info({send_trap, Trap, NotifyName, ContextName, Recv, Varbinds}, S) ->
 	    {noreply, S}
     end;
 
-handle_info({forward_trap, TrapRecord, NotifyName, ContextName,
-	     Recv, Varbinds},S) ->
+handle_info({forward_trap, TrapRecord, NotifyName, ContextName, 
+	     Recv, Varbinds}, S) ->
     ?vlog("[handle_info] forward trap request:"
-	  "~n   TrapRecord:  ~p"
-	  "~n   NotifyName:  ~p"
-	  "~n   ContextName: ~p"
-	  "~n   Recv:        ~p"
-	  "~n   Varbinds:    ~p", 
-	  [TrapRecord,NotifyName,ContextName,Recv,Varbinds]),
+	  "~n   TrapRecord:    ~p"
+	  "~n   NotifyName:    ~p"
+	  "~n   ContextName:   ~p"
+	  "~n   Recv:          ~p"
+	  "~n   Varbinds:      ~p", 
+	  [TrapRecord, NotifyName, ContextName, Recv, Varbinds]),
+    LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID, 
     case (catch maybe_send_trap(S, TrapRecord, NotifyName, ContextName,
-				Recv, Varbinds)) of
+				Recv, Varbinds, LocalEngineID)) of
 	{ok, NewS} ->
 	    {noreply, NewS};
 	{'EXIT', R} ->
@@ -861,17 +907,29 @@ handle_call(restart_set_worker, _From, #state{set_worker = Pid} = S) ->
 	    ok
     end,
     {reply, ok, S};
+
 handle_call({send_trap, Trap, NotifyName, ContextName, Recv, Varbinds}, 
 	    _From, S) ->
     ?vlog("[handle_call] send trap request:"
-	  "~n   Trap:        ~p"
-	  "~n   NotifyName:  ~p"
-	  "~n   ContextName: ~p"
-	  "~n   Recv:        ~p" 
-	  "~n   Varbinds:    ~p", 
-	  [Trap,NotifyName,ContextName,Recv,Varbinds]),
+	  "~n   Trap:          ~p"
+	  "~n   NotifyName:    ~p"
+	  "~n   ContextName:   ~p"
+	  "~n   Recv:          ~p" 
+	  "~n   Varbinds:      ~p", 
+	  [Trap, NotifyName, ContextName, Recv, Varbinds]),
+    LocalEngineID = 
+	case S#state.type of
+	    master_agent ->
+		?DEFAULT_LOCAL_ENGINE_ID;
+	    _ -> 
+		%% subagent - 
+		%% we don't need this, eventually the trap sent request 
+		%% will reach the master-agent and then it will look up 
+		%% the proper engine id.
+		ignore
+	end,
     case (catch handle_send_trap(S, Trap, NotifyName, ContextName,
-				 Recv, Varbinds)) of
+				 Recv, Varbinds, LocalEngineID)) of
 	{ok, NewS} ->
 	    {reply, ok, NewS};
 	{'EXIT', Reason} ->
@@ -881,8 +939,33 @@ handle_call({send_trap, Trap, NotifyName, ContextName, Recv, Varbinds},
 	    ?vinfo("Trap not sent", []),
 	    {reply, {error, send_failed}, S}
     end;
+
+handle_call({send_trap, Trap, NotifyName, 
+	     ContextName, Recv, Varbinds, LocalEngineID}, 
+	    _From, S) ->
+    ?vlog("[handle_call] send trap request:"
+	  "~n   Trap:          ~p"
+	  "~n   NotifyName:    ~p"
+	  "~n   ContextName:   ~p"
+	  "~n   Recv:          ~p" 
+	  "~n   Varbinds:      ~p" 
+	  "~n   LocalEngineID: ~p", 
+	  [Trap, NotifyName, ContextName, Recv, Varbinds, LocalEngineID]),
+    case (catch handle_send_trap(S, Trap, NotifyName, ContextName,
+				 Recv, Varbinds, LocalEngineID)) of
+	{ok, NewS} ->
+	    {reply, ok, NewS};
+	{'EXIT', Reason} ->
+	    ?vinfo("Trap not sent:~n   ~p", [Reason]),
+	    {reply, {error, {send_failed, Reason}}, S};
+	_ ->
+	    ?vinfo("Trap not sent", []),
+	    {reply, {error, send_failed}, S}
+    end;
+
 handle_call({discovery, 
-	     TargetName, Notification, ContextName, Vbs, DiscoHandler, ExtraInfo}, 
+	     TargetName, Notification, ContextName, Vbs, DiscoHandler, 
+	     ExtraInfo}, 
 	    From, 
 	    #state{disco = undefined} = S) ->
     ?vlog("[handle_call] initiate discovery process:"
@@ -1439,17 +1522,20 @@ spawn_thread(Vsn, Pdu, PduMS, ACMData, Address, Extra) ->
     Args = [Vsn, Pdu, PduMS, ACMData, Address, Extra, Dict], 
     proc_lib:spawn_link(?MODULE, handle_pdu, Args).
 
-spawn_trap_thread(TrapRec, NotifyName, ContextName, Recv, V) ->
+spawn_trap_thread(TrapRec, NotifyName, ContextName, Recv, Vbs, 
+		  LocalEngineID) ->
     Dict = get(),
     proc_lib:spawn_link(?MODULE, do_send_trap,
-			[TrapRec, NotifyName, ContextName, Recv, V, Dict]).
+			[TrapRec, NotifyName, ContextName, 
+			 Recv, Vbs, LocalEngineID, Dict]).
 
-do_send_trap(TrapRec, NotifyName, ContextName, Recv, V, Dict) ->
+do_send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs, 
+	     LocalEngineID, Dict) ->
     lists:foreach(fun({Key, Val}) -> put(Key, Val) end, Dict),
     put(sname,trap_sender_short_name(get(sname))),
     ?vlog("starting",[]),
-    snmpa_trap:send_trap(TrapRec, NotifyName, ContextName, Recv, V, 
-			 get(net_if)).
+    snmpa_trap:send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs, 
+			 LocalEngineID, get(net_if)).
 
 worker(Master, Dict) ->
     lists:foreach(fun({Key, Val}) -> put(Key, Val) end, Dict),
@@ -1464,17 +1550,22 @@ worker_loop(Master) ->
 	    handle_pdu(Vsn, Pdu, PduMS, ACMData, Address, Extra),
 	    Master ! worker_available;
 
-	%% Old style message
-	{MibView, Vsn, Pdu, PduMS, ACMData, AgentData, Extra} ->
-	    ?vtrace("worker_loop -> received (old) request", []),
-	    do_handle_pdu(MibView, Vsn, Pdu, PduMS, ACMData, AgentData, Extra),
+	%% We don't trap exits!
+	{TrapRec, NotifyName, ContextName, Recv, Vbs} -> 
+	    ?vtrace("worker_loop -> send trap:"
+		    "~n   ~p", [TrapRec]),
+	    snmpa_trap:send_trap(TrapRec, NotifyName, 
+				 ContextName, Recv, Vbs, get(net_if)),
 	    Master ! worker_available;
 
-	{TrapRec, NotifyName, ContextName, Recv, V} -> % We don't trap exits!
+	%% We don't trap exits!
+	{send_trap, 
+	 TrapRec, NotifyName, ContextName, Recv, Vbs, LocalEngineID} -> 
 	    ?vtrace("worker_loop -> send trap:"
 		    "~n   ~p", [TrapRec]),
 	    snmpa_trap:send_trap(TrapRec, NotifyName, 
-				 ContextName, Recv, V, get(net_if)),
+				 ContextName, Recv, Vbs, LocalEngineID, 
+				 get(net_if)),
 	    Master ! worker_available;
 
 	{verbosity, Verbosity} ->
@@ -1623,13 +1714,15 @@ handle_acm_error(Vsn, Reason, Pdu, ACMData, Address, Extra) ->
     end.
 
 
-handle_send_trap(S, TrapName, NotifyName, ContextName, Recv, Varbinds) ->
+handle_send_trap(S, TrapName, NotifyName, ContextName, Recv, Varbinds, 
+		 LocalEngineID) ->
     ?vtrace("handle_send_trap -> entry with"
-	"~n   S#state.type: ~p"
-	"~n   TrapName:     ~p"
-	"~n   NotifyName:   ~p"
-	"~n   ContextName:  ~p", 
-	[S#state.type, TrapName, NotifyName, ContextName]),
+	"~n   S#state.type:  ~p"
+	"~n   TrapName:      ~p"
+	"~n   NotifyName:    ~p"
+	"~n   ContextName:   ~p"
+	"~n   LocalEngineID: ~p", 
+	[S#state.type, TrapName, NotifyName, ContextName, LocalEngineID]),
     case snmpa_trap:construct_trap(TrapName, Varbinds) of
 	{ok, TrapRecord, VarList} ->
 	    ?vtrace("handle_send_trap -> construction complete: "
@@ -1646,7 +1739,8 @@ handle_send_trap(S, TrapName, NotifyName, ContextName, Recv, Varbinds) ->
 		    ?vtrace("handle_send_trap -> "
 			    "[master] handle send trap",[]),
 		    maybe_send_trap(S, TrapRecord, NotifyName,
-				    ContextName, Recv, VarList)
+				    ContextName, Recv, VarList,
+				    LocalEngineID)
 	    end;
 	error ->
 	    error
@@ -1683,7 +1777,8 @@ maybe_forward_trap(#state{parent = Parent, nfilters = NFs} = S,
 
 
 maybe_send_trap(#state{nfilters = NFs} = S, 
-		TrapRec, NotifyName, ContextName, Recv, Varbinds) ->
+		TrapRec, NotifyName, ContextName, Recv, Varbinds, 
+		LocalEngineID) ->
     ?vtrace("maybe_send_trap -> entry with"
 	    "~n   NFs: ~p", [NFs]),
     case filter_notification(NFs, [], TrapRec) of
@@ -1700,39 +1795,45 @@ maybe_send_trap(#state{nfilters = NFs} = S,
 	    ?vtrace("maybe_send_trap -> send trap:"
 		    "~n   ~p", [TrapRec2]),
 	    do_handle_send_trap(S, TrapRec2, 
-				NotifyName, ContextName, Recv, Varbinds);
+				NotifyName, ContextName, Recv, Varbinds, 
+				LocalEngineID);
 	
 	{send, Removed, TrapRec2} ->
 	    ?vtrace("maybe_send_trap -> send trap:"
 		    "~n   ~p", [TrapRec2]),
 	    NFs2 = del_notification_filter(Removed, NFs),
 	    do_handle_send_trap(S#state{nfilters = NFs2}, TrapRec2, 
-				NotifyName, ContextName, Recv, Varbinds)
+				NotifyName, ContextName, Recv, Varbinds,
+				LocalEngineID)
     end.
    
-do_handle_send_trap(S, TrapRec, NotifyName, ContextName, Recv, Varbinds) ->
-    V = snmpa_trap:try_initialise_vars(get(mibserver), Varbinds),
+do_handle_send_trap(S, TrapRec, NotifyName, ContextName, Recv, Varbinds,
+		   LocalEngineID) ->
+    Vbs = snmpa_trap:try_initialise_vars(get(mibserver), Varbinds),
     case S#state.type of
 	subagent ->
 	    forward_trap(S#state.parent, TrapRec, NotifyName, ContextName,
-			 Recv, V),
+			 Recv, Vbs),
 	    {ok, S};
 	master_agent when S#state.multi_threaded =:= false ->
 	    ?vtrace("do_handle_send_trap -> send trap:"
 		    "~n   ~p", [TrapRec]),
 	    snmpa_trap:send_trap(TrapRec, NotifyName, ContextName,
-				 Recv, V, get(net_if)),
+				 Recv, Vbs, LocalEngineID, get(net_if)),
 	    {ok, S};
 	master_agent when S#state.worker_state =:= busy ->
 	    %% Main worker busy => create new worker
 	    ?vtrace("do_handle_send_trap -> main worker busy: "
 		    "spawn a trap sender", []),
-	    spawn_trap_thread(TrapRec, NotifyName, ContextName, Recv, V),
+	    spawn_trap_thread(TrapRec, NotifyName, ContextName, Recv, Vbs,
+			      LocalEngineID),
 	    {ok, S};
 	master_agent ->
 	    %% Send to main worker
 	    ?vtrace("do_handle_send_trap -> send to main worker",[]),
-	    S#state.worker ! {TrapRec, NotifyName, ContextName, Recv, V},
+	    S#state.worker ! {send_trap, 
+			      TrapRec, NotifyName, ContextName, Recv, Vbs,
+			      LocalEngineID},
 	    {ok, S#state{worker_state = busy}}
     end.
     
diff --git a/lib/snmp/src/agent/snmpa_internal.hrl b/lib/snmp/src/agent/snmpa_internal.hrl
index a33a6809dc..9fa874f119 100644
--- a/lib/snmp/src/agent/snmpa_internal.hrl
+++ b/lib/snmp/src/agent/snmpa_internal.hrl
@@ -1,19 +1,19 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 2006-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 2006-2010. All Rights Reserved.
+%%
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
 %% compliance with the License. You should have received a copy of the
 %% Erlang Public License along with this software. If not, it can be
 %% retrieved online at http://www.erlang.org/.
-%% 
+%%
 %% Software distributed under the License is distributed on an "AS IS"
 %% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 %% the License for the specific language governing rights and limitations
 %% under the License.
-%% 
+%%
 %% %CopyrightEnd%
 %%
 
@@ -22,6 +22,8 @@
 
 -include_lib("snmp/src/app/snmp_internal.hrl").
 
+-define(DEFAULT_LOCAL_ENGINE_ID, snmp_framework_mib:get_engine_id()).
+
 -define(snmpa_info(F, A),    ?snmp_info("agent",    F, A)).
 -define(snmpa_warning(F, A), ?snmp_warning("agent", F, A)).
 -define(snmpa_error(F, A),   ?snmp_error("agent",   F, A)).
diff --git a/lib/snmp/src/agent/snmpa_mpd.erl b/lib/snmp/src/agent/snmpa_mpd.erl
index 2e09286b87..fd75b98f84 100644
--- a/lib/snmp/src/agent/snmpa_mpd.erl
+++ b/lib/snmp/src/agent/snmpa_mpd.erl
@@ -1,27 +1,28 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 1997-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 1997-2010. All Rights Reserved.
+%%
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
 %% compliance with the License. You should have received a copy of the
 %% Erlang Public License along with this software. If not, it can be
 %% retrieved online at http://www.erlang.org/.
-%% 
+%%
 %% Software distributed under the License is distributed on an "AS IS"
 %% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 %% the License for the specific language governing rights and limitations
 %% under the License.
-%% 
+%%
 %% %CopyrightEnd%
 %%
 -module(snmpa_mpd).
 
 -export([init/1, reset/0, inc/1, counters/0, 
 	 discarded_pdu/1,
-	 process_packet/6,
-	 generate_response_msg/5, generate_msg/5, 
+	 process_packet/6, process_packet/7, 
+	 generate_response_msg/5, generate_response_msg/6, 
+	 generate_msg/5, generate_msg/6, 
 	 generate_discovery_msg/4, 
 	 process_taddrs/1, 
 	 generate_req_id/0]).
@@ -34,6 +35,7 @@
 
 -define(VMODULE,"MPD").
 -include("snmp_verbosity.hrl").
+-include("snmpa_internal.hrl").
 
 -define(empty_msg_size, 24).
 
@@ -120,6 +122,12 @@ reset() ->
 %%          section 4.2.1 in rfc2272)
 %%-----------------------------------------------------------------
 process_packet(Packet, TDomain, TAddress, State, NoteStore, Log) ->
+    LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID, 
+    process_packet(Packet, TDomain, TAddress, LocalEngineID, 
+		   State, NoteStore, Log).
+
+process_packet(Packet, TDomain, TAddress, LocalEngineID, 
+	       State, NoteStore, Log) ->
     inc(snmpInPkts),
     case catch snmp_pdus:dec_message_only(binary_to_list(Packet)) of
 
@@ -127,15 +135,17 @@ process_packet(Packet, TDomain, TAddress, State, NoteStore, Log) ->
 	  when State#state.v1 =:= true ->
 	    ?vlog("v1, community: ~s", [Community]),
 	    HS = ?empty_msg_size + length(Community),
-	    v1_v2c_proc('version-1', NoteStore, Community, TDomain, TAddress, 
-			Data, HS, Log, Packet);
+	    v1_v2c_proc('version-1', NoteStore, Community, 
+			TDomain, TAddress, 
+			LocalEngineID, Data, HS, Log, Packet);
 
 	#message{version = 'version-2', vsn_hdr = Community, data = Data}
 	  when State#state.v2c =:= true ->
 	    ?vlog("v2c, community: ~s", [Community]),
 	    HS = ?empty_msg_size + length(Community),
-	    v1_v2c_proc('version-2', NoteStore, Community, TDomain, TAddress, 
-			Data, HS, Log, Packet);
+	    v1_v2c_proc('version-2', NoteStore, Community, 
+			TDomain, TAddress, 
+			LocalEngineID, Data, HS, Log, Packet);
 
 	#message{version = 'version-3', vsn_hdr = V3Hdr, data = Data}
 	  when State#state.v3 =:= true ->
@@ -143,7 +153,9 @@ process_packet(Packet, TDomain, TAddress, State, NoteStore, Log) ->
 		  [V3Hdr#v3_hdr.msgID,
 		   V3Hdr#v3_hdr.msgFlags,
 		   V3Hdr#v3_hdr.msgSecurityModel]),
-	    v3_proc(NoteStore, Packet, TDomain, TAddress, V3Hdr, Data, Log);
+	    v3_proc(NoteStore, Packet, 
+		    TDomain, TAddress, 
+		    LocalEngineID, V3Hdr, Data, Log);
 
 	{'EXIT', {bad_version, Vsn}} ->
 	    ?vtrace("exit: bad version: ~p",[Vsn]),
@@ -170,10 +182,11 @@ discarded_pdu(Variable) -> inc(Variable).
 %%-----------------------------------------------------------------
 %% Handles a Community based message (v1 or v2c).
 %%-----------------------------------------------------------------
-v1_v2c_proc(Vsn, NoteStore, Community, snmpUDPDomain, {Ip, Udp}, 
+v1_v2c_proc(Vsn, NoteStore, Community, snmpUDPDomain, 
+	    {Ip, Udp}, LocalEngineID, 
 	    Data, HS, Log, Packet) ->
     TAddress = tuple_to_list(Ip) ++ [Udp div 256, Udp rem 256],
-    AgentMS = snmp_framework_mib:get_engine_max_message_size(),
+    AgentMS = get_engine_max_message_size(LocalEngineID),
     MgrMS = snmp_community_mib:get_target_addr_ext_mms(?snmpUDPDomain,
 						       TAddress),
     PduMS = case MgrMS of
@@ -220,10 +233,10 @@ v1_v2c_proc(Vsn, NoteStore, Community, snmpUDPDomain, {Ip, Udp},
 	    {discarded, trap_pdu}
     end;
 v1_v2c_proc(_Vsn, _NoteStore, _Community, snmpUDPDomain, TAddress, 
-	    _Data, _HS, _Log, _Packet) ->
+	    _LocalEngineID, _Data, _HS, _Log, _Packet) ->
     {discarded, {badarg, TAddress}};
 v1_v2c_proc(_Vsn, _NoteStore, _Community, TDomain, _TAddress, 
-	    _Data, _HS, _Log, _Packet) ->
+	    _LocalEngineID, _Data, _HS, _Log, _Packet) ->
     {discarded, {badarg, TDomain}}.
 
 sec_model('version-1') -> ?SEC_V1;
@@ -234,15 +247,19 @@ sec_model('version-2') -> ?SEC_V2C.
 %% Handles a SNMPv3 Message, following the procedures in rfc2272,
 %% section 4.2 and 7.2
 %%-----------------------------------------------------------------
-v3_proc(NoteStore, Packet, _TDomain, _TAddress, V3Hdr, Data, Log) ->
-    case (catch v3_proc(NoteStore, Packet, V3Hdr, Data, Log)) of
+v3_proc(NoteStore, Packet, _TDomain, _TAddress, LocalEngineID, 
+	V3Hdr, Data, Log) ->
+    case (catch v3_proc(NoteStore, Packet, LocalEngineID, V3Hdr, Data, Log)) of
 	{'EXIT', Reason} ->
 	    exit(Reason);
 	Result ->
 	    Result
     end.
 
-v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
+v3_proc(NoteStore, Packet, LocalEngineID, V3Hdr, Data, Log) ->
+    ?vtrace("v3_proc -> entry with"
+	    "~n   LocalEngineID: ~p",
+	    [LocalEngineID]),
     %% 7.2.3
     #v3_hdr{msgID                 = MsgID, 
 	    msgMaxSize            = MMS, 
@@ -250,7 +267,7 @@ v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
 	    msgSecurityModel      = MsgSecurityModel,
 	    msgSecurityParameters = SecParams, 
 	    hdr_size              = HdrSize} = V3Hdr,
-    ?vdebug("v3_proc -> version 3 message header:"
+    ?vdebug("v3_proc -> version 3 message header [7.2.3]:"
 	    "~n   msgID                 = ~p"
 	    "~n   msgMaxSize            = ~p"
 	    "~n   msgFlags              = ~p"
@@ -263,17 +280,19 @@ v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
     SecLevel = check_sec_level(MsgFlags),
     IsReportable = snmp_misc:is_reportable(MsgFlags),
     %% 7.2.6
-    ?vtrace("v3_proc -> "
+    ?vtrace("v3_proc -> [7.2.6]"
 	    "~n   SecModule    = ~p"
 	    "~n   SecLevel     = ~p"
 	    "~n   IsReportable = ~p",
-	    [SecModule,SecLevel,IsReportable]),
+	    [SecModule, SecLevel, IsReportable]),
     SecRes = (catch SecModule:process_incoming_msg(Packet, Data,
-						   SecParams, SecLevel)),
+						   SecParams, SecLevel, 
+						   LocalEngineID)),
     ?vtrace("v3_proc -> message processing result: "
 	    "~n   SecRes: ~p", [SecRes]),
     {SecEngineID, SecName, ScopedPDUBytes, SecData, DiscoOrPlain} =
-	check_sec_module_result(SecRes, V3Hdr, Data, IsReportable, Log),
+	check_sec_module_result(SecRes, V3Hdr, Data, 
+				LocalEngineID, IsReportable, Log),
     ?vtrace("v3_proc -> "
 	    "~n   DiscoOrPlain: ~w"
 	    "~n   SecEngineID:  ~w"
@@ -311,7 +330,7 @@ v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
 	    Log(PDU#pdu.type, Packet)
     end,
     %% Make sure a get_bulk doesn't get too big.
-    AgentMS = snmp_framework_mib:get_engine_max_message_size(),
+    AgentMS = get_engine_max_message_size(LocalEngineID),
     %% PduMMS is supposed to be the maximum total length of the response
     %% PDU we can send.  From the MMS, we need to subtract everything before
     %% the PDU, i.e. Message and ScopedPDU.
@@ -415,8 +434,8 @@ v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
 	    throw({discarded, received_v2_trap});
 	Type ->
 	    %% 7.2.13
-	    SnmpEngineID = snmp_framework_mib:get_engine_id(),
-	    ?vtrace("v3_proc -> SnmpEngineID = ~w", [SnmpEngineID]),
+	    SnmpEngineID = LocalEngineID, 
+	    ?vtrace("v3_proc -> 7.2.13", []),
 	    case SecEngineID of
 		SnmpEngineID when (DiscoOrPlain =:= discovery) ->
 		    %% This is a discovery step 2 message!
@@ -429,6 +448,7 @@ v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
 						   ContextName,
 						   SecData, 
 						   PDU, 
+						   LocalEngineID, 
 						   Log);
 
 		SnmpEngineID when (DiscoOrPlain =:= plain) ->
@@ -444,17 +464,18 @@ v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
 			    %% 4.2.2.1.2
 			    NIsReportable = snmp_misc:is_reportable_pdu(Type),
 			    Val = inc(snmpUnknownPDUHandlers),
-			    ErrorInfo = {#varbind{oid = ?snmpUnknownPDUHandlers,
-						  variabletype = 'Counter32',
-						  value = Val},
-					 SecName,
-					 [{securityLevel, SecLevel},
-					  {contextEngineID, ContextEngineID},
-					  {contextName, ContextName}]},
+			    ErrorInfo = 
+				{#varbind{oid = ?snmpUnknownPDUHandlers,
+					  variabletype = 'Counter32',
+					  value = Val},
+				 SecName,
+				 [{securityLevel,   SecLevel},
+				  {contextEngineID, ContextEngineID},
+				  {contextName,     ContextName}]},
 			    case generate_v3_report_msg(MsgID, 
 							MsgSecurityModel,
-							Data, ErrorInfo,
-							Log) of
+							Data, LocalEngineID, 
+							ErrorInfo, Log) of
 				{ok, Report} when NIsReportable =:= true ->
 				    {discarded, snmpUnknownPDUHandlers, Report};
 				_ ->
@@ -473,6 +494,7 @@ v3_proc(NoteStore, Packet, V3Hdr, Data, Log) ->
 						   ContextName,
 						   SecData, 
 						   PDU, 
+						   LocalEngineID, 
 						   Log);
 		    
 		_ ->
@@ -501,7 +523,7 @@ check_sec_level(Unknown) ->
     inc(snmpInvalidMsgs),
     throw({discarded, snmpInvalidMsgs}).
 
-check_sec_module_result(Res, V3Hdr, Data, IsReportable, Log) ->
+check_sec_module_result(Res, V3Hdr, Data, LocalEngineID, IsReportable, Log) ->
     case Res of
 	{ok, X} -> 
 	    X;
@@ -516,7 +538,7 @@ check_sec_module_result(Res, V3Hdr, Data, IsReportable, Log) ->
 	    #v3_hdr{msgID = MsgID, msgSecurityModel = MsgSecModel} = V3Hdr,
 	    Pdu = get_scoped_pdu(Data),
 	    case generate_v3_report_msg(MsgID, MsgSecModel, Pdu,
-					ErrorInfo, Log) of
+					LocalEngineID, ErrorInfo, Log) of
 		{ok, Report} ->
 		    throw({discarded, {securityError, Reason}, Report});
 		{discarded, _SomeOtherReason} ->
@@ -545,8 +567,15 @@ get_scoped_pdu(D) ->
 generate_response_msg(Vsn, RePdu, Type, ACMData, Log) ->
     generate_response_msg(Vsn, RePdu, Type, ACMData, Log, 1).
 
+generate_response_msg(Vsn, RePdu, Type, ACMData, Log, N) when is_integer(N) ->
+    LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID, 
+    generate_response_msg(Vsn, RePdu, Type, ACMData, LocalEngineID, Log, N);
+generate_response_msg(Vsn, RePdu, Type, ACMData, LocalEngineID, Log) ->
+    generate_response_msg(Vsn, RePdu, Type, ACMData, LocalEngineID, Log, 1).
+
 generate_response_msg(Vsn, RePdu, Type, 
 		      {community, _SecModel, Community, _IpUdp},
+		      LocalEngineID, 
 		      Log, _) ->
 	case catch snmp_pdus:enc_pdu(RePdu) of
 	    {'EXIT', Reason} ->
@@ -555,8 +584,9 @@ generate_response_msg(Vsn, RePdu, Type,
 			 [RePdu, Community, Reason]),
 		{discarded, Reason};
 	    PduBytes ->
-		Message = #message{version = Vsn, vsn_hdr = Community, 
-				   data = PduBytes},
+		Message = #message{version = Vsn, 
+				   vsn_hdr = Community, 
+				   data    = PduBytes},
 		case catch list_to_binary(
 			     snmp_pdus:enc_message_only(Message)) of
 		    {'EXIT', Reason} ->
@@ -565,7 +595,7 @@ generate_response_msg(Vsn, RePdu, Type,
 				 [RePdu, Community, Reason]),
 			{discarded, Reason};
 		    Packet ->
-			MMS = snmp_framework_mib:get_engine_max_message_size(),
+			MMS = get_engine_max_message_size(LocalEngineID),
 			case size(Packet) of
 			    Len when Len =< MMS ->
 				Log(Type, Packet),
@@ -584,6 +614,7 @@ generate_response_msg(Vsn, RePdu, Type,
 generate_response_msg(Vsn, RePdu, Type, 
 		      {v3, MsgID, MsgSecurityModel, SecName, SecLevel,
 		       ContextEngineID, ContextName, SecData},
+		      LocalEngineID, 
 		      Log, N) ->
     %% rfc2272: 7.1 steps 6-8
     ScopedPDU = #scopedPdu{contextEngineID = ContextEngineID,
@@ -596,7 +627,7 @@ generate_response_msg(Vsn, RePdu, Type,
 		     [RePdu, ContextName, Reason]),
 	    {discarded, Reason};
 	ScopedPDUBytes -> 
-	    AgentMS = snmp_framework_mib:get_engine_max_message_size(),
+	    AgentMS = get_engine_max_message_size(LocalEngineID),
 	    V3Hdr = #v3_hdr{msgID      = MsgID,
 			    msgMaxSize = AgentMS,
 			    msgFlags = snmp_misc:mk_msg_flags(Type, SecLevel),
@@ -611,13 +642,14 @@ generate_response_msg(Vsn, RePdu, Type,
 		    ?SEC_USM ->
 			snmpa_usm
 		end,
-	    SecEngineID = snmp_framework_mib:get_engine_id(),
+	    SecEngineID = LocalEngineID, 
 	    ?vtrace("generate_response_msg -> SecEngineID: ~w", [SecEngineID]),
 	    case (catch SecModule:generate_outgoing_msg(Message, 
 							SecEngineID,
 							SecName, 
 							SecData, 
-							SecLevel)) of
+							SecLevel,
+							LocalEngineID)) of
 		{'EXIT', Reason} ->
 		    config_err("~p (message: ~p)", [Reason, Message]),
 		    {discarded, Reason};
@@ -668,12 +700,14 @@ generate_response_msg(Vsn, RePdu, Type,
 						   SecName, SecLevel,
 						   ContextEngineID, 
 						   ContextName,
-						   SecData}, Log, N+1)
+						   SecData}, 
+						  LocalEngineID, Log, N+1)
 		    end
 	    end
     end.
 
-generate_v3_report_msg(MsgID, MsgSecurityModel, Data, ErrorInfo, Log) ->
+generate_v3_report_msg(MsgID, MsgSecurityModel, Data, LocalEngineID, 
+		       ErrorInfo, Log) ->
     {Varbind, SecName, Opts} = ErrorInfo,
     ReqId =
 	if 
@@ -689,7 +723,7 @@ generate_v3_report_msg(MsgID, MsgSecurityModel, Data, ErrorInfo, Log) ->
 	       error_index  = 0,
 	       varbinds     = [Varbind]},
     SecLevel        = snmp_misc:get_option(securityLevel, Opts, 0),
-    SnmpEngineID    = snmp_framework_mib:get_engine_id(),
+    SnmpEngineID    = LocalEngineID, 
     ContextEngineID = 
 	snmp_misc:get_option(contextEngineID, Opts, SnmpEngineID),
     ContextName     = snmp_misc:get_option(contextName, Opts, ""),
@@ -697,7 +731,8 @@ generate_v3_report_msg(MsgID, MsgSecurityModel, Data, ErrorInfo, Log) ->
 
     generate_response_msg('version-3', Pdu, report,
 			  {v3, MsgID, MsgSecurityModel, SecName, SecLevel,
-			   ContextEngineID, ContextName, SecData}, Log).
+			   ContextEngineID, ContextName, SecData}, 
+			  LocalEngineID, Log).
 
 %% req_id(#scopedPdu{data = #pdu{request_id = ReqId}}) ->
 %%     ?vtrace("Report ReqId: ~p",[ReqId]),
@@ -719,7 +754,8 @@ generate_discovery1_report_msg(MsgID, MsgSecurityModel,
 			       SecName, SecLevel, 
 			       ContextEngineID, ContextName,
 			       {SecData, Oid, Value}, 
-			       #pdu{request_id = ReqId}, Log) ->
+			       #pdu{request_id = ReqId}, 
+			       LocalEngineID, Log) ->
     ?vtrace("generate_discovery1_report_msg -> entry with"
 	    "~n   ReqId: ~p"
 	    "~n   Value: ~p", [ReqId, Value]),
@@ -734,7 +770,8 @@ generate_discovery1_report_msg(MsgID, MsgSecurityModel,
 		  varbinds     = [Varbind]},
     case generate_response_msg('version-3', PduOut, report,
 			       {v3, MsgID, MsgSecurityModel, SecName, SecLevel,
-				ContextEngineID, ContextName, SecData}, Log) of
+				ContextEngineID, ContextName, SecData}, 
+			       LocalEngineID, Log) of
 	{ok, Packet} ->
 	    {discovery, Packet};
 	Error ->
@@ -745,7 +782,8 @@ generate_discovery1_report_msg(MsgID, MsgSecurityModel,
 generate_discovery2_report_msg(MsgID, MsgSecurityModel, 
 			       SecName, SecLevel, 
 			       ContextEngineID, ContextName,
-			       SecData, #pdu{request_id = ReqId}, Log) ->
+			       SecData, #pdu{request_id = ReqId}, 
+			       LocalEngineID, Log) ->
     ?vtrace("generate_discovery2_report_msg -> entry with"
 	    "~n   ReqId: ~p", [ReqId]),
     SecModule = get_security_module(MsgSecurityModel), 
@@ -757,7 +795,8 @@ generate_discovery2_report_msg(MsgID, MsgSecurityModel,
 		  varbinds     = [Vb]},
     case generate_response_msg('version-3', PduOut, report,
 			       {v3, MsgID, MsgSecurityModel, SecName, SecLevel,
-				ContextEngineID, ContextName, SecData}, Log) of
+				ContextEngineID, ContextName, SecData}, 
+			       LocalEngineID, Log) of
 	{ok, Packet} ->
 	    {discovery, Packet};
 	Error ->
@@ -816,7 +855,11 @@ set_vb_null([]) ->
 %% Executed when a message that isn't a response is generated, i.e.
 %% a trap or an inform.
 %%-----------------------------------------------------------------
-generate_msg(Vsn, _NoteStore, Pdu, {community, Community}, To) ->
+generate_msg(Vsn, NoteStore, Pdu, ACMData, To) ->
+    LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID, 
+    generate_msg(Vsn, NoteStore, Pdu, ACMData, LocalEngineID, To).
+
+generate_msg(Vsn, _NoteStore, Pdu, {community, Community}, LocalEngineID, To) ->
     Message = #message{version = Vsn, vsn_hdr = Community, data = Pdu},
     case catch list_to_binary(snmp_pdus:enc_message(Message)) of
 	{'EXIT', Reason} ->
@@ -825,7 +868,7 @@ generate_msg(Vsn, _NoteStore, Pdu, {community, Community}, To) ->
 		     [Pdu, Community, Reason]),
 	    {discarded, Reason};
 	Packet ->
-	    AgentMax = snmp_framework_mib:get_engine_max_message_size(),
+	    AgentMax = get_engine_max_message_size(LocalEngineID),
 	    case size(Packet) of
 		Len when Len =< AgentMax ->
 		    {ok, mk_v1_v2_packet_list(To, Packet, Len, Pdu)};
@@ -838,9 +881,9 @@ generate_msg(Vsn, _NoteStore, Pdu, {community, Community}, To) ->
 	    end
     end;
 generate_msg('version-3', NoteStore, Pdu, 
-	     {v3, ContextEngineID, ContextName}, To) ->
-    %% rfc2272: 7.1.6
-    ScopedPDU = #scopedPdu{contextEngineID = ContextEngineID,
+	     {v3, ContextEngineID, ContextName}, LocalEngineID, To) ->
+    %% rfc2272: 7.1 step 6
+    ScopedPDU = #scopedPdu{contextEngineID = LocalEngineID, 
 			   contextName = ContextName,
 			   data = Pdu},
     case (catch snmp_pdus:enc_scoped_pdu(ScopedPDU)) of
@@ -851,7 +894,8 @@ generate_msg('version-3', NoteStore, Pdu,
 	    {discarded, Reason};
 	ScopedPDUBytes -> 
 	    {ok, mk_v3_packet_list(NoteStore, To, ScopedPDUBytes, Pdu, 
-				   ContextEngineID, ContextName)}
+				   ContextEngineID, ContextName, 
+				   LocalEngineID)}
     end.
 
 
@@ -1094,17 +1138,21 @@ mk_msg_flags(PduType, SecLevel) ->
 
 mk_v3_packet_entry(NoteStore, Domain, Addr, 
 		   {SecModel, SecName, SecLevel, TargetAddrName},
-		   ScopedPDUBytes, Pdu, ContextEngineID, ContextName) ->
-    %% 7.1.7
-    ?vtrace("mk_v3_packet_entry -> entry - 7.1.7", []),
-    MsgID     = generate_msg_id(),
-    PduType   = Pdu#pdu.type,
-    MsgFlags  = mk_msg_flags(PduType, SecLevel), 
+		   ScopedPDUBytes, Pdu, _ContextEngineID, ContextName,
+		   LocalEngineID) ->
+    %% rfc2272 7.1 step 77
+    ?vtrace("mk_v3_packet_entry -> entry - RFC2272-7.1:7", []),
+    MsgVersion  = 'version-3',                     % 7.1:7a
+    MsgID       = generate_msg_id(),               % 7.1:7b
+    MaxMsgSz    = get_max_message_size(),          % 7.1:7c
+    PduType     = Pdu#pdu.type,      
+    MsgFlags    = mk_msg_flags(PduType, SecLevel), % 7.1:7d
+    MsgSecModel = SecModel,                        % 7.1:7e
     V3Hdr     = #v3_hdr{msgID            = MsgID,
-			msgMaxSize       = get_max_message_size(),
+			msgMaxSize       = MaxMsgSz, 
 			msgFlags         = MsgFlags, 
-			msgSecurityModel = SecModel},
-    Message   = #message{version = 'version-3', 
+			msgSecurityModel = MsgSecModel},
+    Message   = #message{version = MsgVersion, 
 			 vsn_hdr = V3Hdr,
 			 data    = ScopedPDUBytes},
     SecModule = 
@@ -1113,12 +1161,21 @@ mk_v3_packet_entry(NoteStore, Domain, Addr,
 		snmpa_usm
 	end,
 
+    %% 
+    %% 7.1:8 - If the PDU is from the Response Class or the Internal Class
+    %%         securityEngineID = snmpEngineID (local/source)
+    %% 7.1:9 - If the PDU is from the Unconfirmed Class
+    %%         securityEngineID = snmpEngineID (local/source)
+    %%         else
+    %%         securityEngineID = targetEngineID (remote/destination)
+    %% 
+
     %% 7.1.9a
     ?vtrace("mk_v3_packet_entry -> sec engine id - 7.1.9a", []),
     SecEngineID =
 	case PduType of
 	    'snmpv2-trap' ->
-		snmp_framework_mib:get_engine_id();
+		LocalEngineID; 
 	    _ ->
 		%% This is the implementation dependent target engine id
 		%% procedure.
@@ -1141,8 +1198,9 @@ mk_v3_packet_entry(NoteStore, Domain, Addr,
 
     ?vdebug("mk_v3_packet_entry -> secEngineID: ~p", [SecEngineID]),
     %% 7.1.9b
-    case catch SecModule:generate_outgoing_msg(Message, SecEngineID,
-					       SecName, [], SecLevel) of
+    case (catch SecModule:generate_outgoing_msg(Message, SecEngineID,
+						SecName, [], SecLevel,
+						LocalEngineID)) of
 	{'EXIT', Reason} ->
 	    config_err("~p (message: ~p)", [Reason, Message]),
 	    skip;
@@ -1169,7 +1227,7 @@ mk_v3_packet_entry(NoteStore, Domain, Addr,
 			     sec_model     = SecModel, 
 			     sec_name      = SecName, 
 			     sec_level     = SecLevel, 
-			     ctx_engine_id = ContextEngineID, 
+			     ctx_engine_id = LocalEngineID, 
 			     ctx_name      = ContextName,
 			     disco         = false,
 			     req_id        = Pdu#pdu.request_id},
@@ -1180,15 +1238,16 @@ mk_v3_packet_entry(NoteStore, Domain, Addr,
 
 
 mk_v3_packet_list(NoteStore, To, 
-		  ScopedPDUBytes, Pdu, ContextEngineID, ContextName) ->
+		  ScopedPDUBytes, Pdu, ContextEngineID, ContextName, 
+		  LocalEngineID) ->
     mk_v3_packet_list(NoteStore, To, 
 		      ScopedPDUBytes, Pdu, 
-		      ContextEngineID, ContextName, []).
+		      ContextEngineID, ContextName, LocalEngineID, []).
 
 mk_v3_packet_list(_, [], 
 		  _ScopedPDUBytes, _Pdu, 
 		  _ContextEngineID, _ContextName, 
-		  Acc) ->
+		  _LocalEngineID, Acc) ->
     lists:reverse(Acc);
 
 %% This clause is for backward compatibillity reasons
@@ -1196,20 +1255,21 @@ mk_v3_packet_list(_, [],
 mk_v3_packet_list(NoteStore, 
 		  [{{?snmpUDPDomain, [A,B,C,D,U1,U2]}, SecData} | T], 
 		  ScopedPDUBytes, Pdu, ContextEngineID, ContextName, 
-		  Acc) ->
+		  LocalEngineID, Acc) ->
     case mk_v3_packet_entry(NoteStore, 
 			    snmpUDPDomain, {{A,B,C,D}, U1 bsl 8 + U2}, SecData,
 			    ScopedPDUBytes, Pdu, 
-			    ContextEngineID, ContextName) of
+			    ContextEngineID, ContextName, LocalEngineID) of
 	skip ->
 	    mk_v3_packet_list(NoteStore, T, 
 			      ScopedPDUBytes, Pdu, 
-			      ContextEngineID, ContextName, 
+			      ContextEngineID, ContextName, LocalEngineID, 
 			      Acc);
 	{ok, Entry} ->
 	    mk_v3_packet_list(NoteStore, T, 
 			      ScopedPDUBytes, Pdu, 
-			      ContextEngineID, ContextName, [Entry | Acc])
+			      ContextEngineID, ContextName, LocalEngineID, 
+			      [Entry | Acc])
     end;
 
 %% This is the new clause
@@ -1218,11 +1278,11 @@ mk_v3_packet_list(NoteStore,
 mk_v3_packet_list(NoteStore, 
 		  [{{Domain, Addr}, SecData} | T], 
 		  ScopedPDUBytes, Pdu, ContextEngineID, ContextName,
-		  Acc) ->
+		  LocalEngineID, Acc) ->
     case mk_v3_packet_entry(NoteStore, 
 			    Domain, Addr, SecData,
 			    ScopedPDUBytes, Pdu, 
-			    ContextEngineID, ContextName) of
+			    ContextEngineID, ContextName, LocalEngineID) of
 	skip ->
 	    mk_v3_packet_list(NoteStore, T, 
 			      ScopedPDUBytes, Pdu, 
@@ -1230,7 +1290,8 @@ mk_v3_packet_list(NoteStore,
 	{ok, Entry} ->
 	    mk_v3_packet_list(NoteStore, T, 
 			      ScopedPDUBytes, Pdu, 
-			      ContextEngineID, ContextName, [Entry | Acc])
+			      ContextEngineID, ContextName, 
+			      LocalEngineID, [Entry | Acc])
     end.
 
 
@@ -1253,6 +1314,9 @@ gen(Id) ->
 get_target_engine_id(TargetAddrName) ->
     snmp_target_mib:get_target_engine_id(TargetAddrName).
 
+get_engine_max_message_size(_LocalEngineID) ->
+    snmp_framework_mib:get_engine_max_message_size().
+
 sec_module(?SEC_USM) ->
     snmpa_usm.
 
diff --git a/lib/snmp/src/agent/snmpa_trap.erl b/lib/snmp/src/agent/snmpa_trap.erl
index b1096b1135..450cb2e9f4 100644
--- a/lib/snmp/src/agent/snmpa_trap.erl
+++ b/lib/snmp/src/agent/snmpa_trap.erl
@@ -1,19 +1,19 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 1996-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 1996-2010. All Rights Reserved.
+%%
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
 %% compliance with the License. You should have received a copy of the
 %% Erlang Public License along with this software. If not, it can be
 %% retrieved online at http://www.erlang.org/.
-%% 
+%%
 %% Software distributed under the License is distributed on an "AS IS"
 %% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 %% the License for the specific language governing rights and limitations
 %% under the License.
-%% 
+%%
 %% %CopyrightEnd%
 %%
 -module(snmpa_trap).
@@ -23,14 +23,18 @@
 %%%-----------------------------------------------------------------
 %% External exports
 -export([construct_trap/2, 
-	 try_initialise_vars/2, send_trap/6]).
+	 try_initialise_vars/2, 
+	 send_trap/6, send_trap/7]).
 -export([send_discovery/5]).
 
 %% Internal exports
--export([init_v2_inform/9, init_v3_inform/9, send_inform/6]).
+-export([init_v2_inform/9, 
+	 init_v3_inform/9, init_v3_inform/10, 
+	 send_inform/6]).
 -export([init_discovery_inform/12, send_discovery_inform/5]).
 
 -include("snmp_types.hrl").
+-include("snmpa_internal.hrl").
 -include("SNMPv2-MIB.hrl").
 -include("SNMPv2-TM.hrl").
 -include("SNMPv2-TC.hrl").
@@ -331,13 +335,20 @@ make_varbind_list(Varbinds) ->
 %%          SnmpTargetAddrTable (using the Tag).
 %%-----------------------------------------------------------------
 send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs, NetIf) ->
-    (catch do_send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs, NetIf)).
+    LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID, 
+    send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs, 
+	      LocalEngineID, NetIf).
+
+send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs, LocalEngineID, NetIf) ->
+    (catch do_send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs, 
+			LocalEngineID, NetIf)).
 
-do_send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs, NetIf) ->
+do_send_trap(TrapRec, NotifyName, ContextName, Recv, Vbs, 
+	     LocalEngineID, NetIf) ->
     VarbindList = make_varbind_list(Vbs),
     Dests       = find_dests(NotifyName),
     send_trap_pdus(Dests, ContextName, {TrapRec, VarbindList}, [], [], [],
-		   Recv, NetIf).
+		   Recv, LocalEngineID, NetIf).
 
 send_discovery(TargetName, Record, ContextName, Vbs, NetIf) ->
     case find_dest(TargetName) of
@@ -619,7 +630,9 @@ send_discovery_inform(Parent, Timeout, Retry, Msg, NetIf) ->
 %%-----------------------------------------------------------------
 send_trap_pdus([{DestAddr, TargetName, {MpModel, SecModel, SecName, SecLevel},
 		 Type} | T],
-	       ContextName,{TrapRec, Vbs}, V1Res, V2Res, V3Res, Recv, NetIf) ->
+	       ContextName, 
+	       {TrapRec, Vbs}, V1Res, V2Res, V3Res, Recv, 
+	       LocalEngineID, NetIf) ->
     ?vdebug("send trap pdus: "
 	    "~n   Destination address: ~p"
 	    "~n   Target name:         ~p"
@@ -634,7 +647,7 @@ send_trap_pdus([{DestAddr, TargetName, {MpModel, SecModel, SecName, SecLevel},
 	    case check_all_varbinds(TrapRec, Vbs, MibView) of
 		true when MpModel =:= ?MP_V1 ->
 		    ?vtrace("send_trap_pdus -> v1 mp model",[]),
-		    ContextEngineId = snmp_framework_mib:get_engine_id(),
+		    ContextEngineId = LocalEngineID, 
 		    case snmp_community_mib:vacm2community({SecName,
 							    ContextEngineId,
 							    ContextName},
@@ -644,16 +657,18 @@ send_trap_pdus([{DestAddr, TargetName, {MpModel, SecModel, SecName, SecLevel},
 				    [element(2, DestAddr)]),
 			    send_trap_pdus(T, ContextName, {TrapRec, Vbs},
 					   [{DestAddr, Community} | V1Res],
-					   V2Res, V3Res, Recv, NetIf);
+					   V2Res, V3Res, Recv, 
+					   LocalEngineID, NetIf);
 			undefined ->
 			    ?vdebug("No community found for v1 dest: ~p", 
 				    [element(2, DestAddr)]),
 			    send_trap_pdus(T, ContextName, {TrapRec, Vbs},
-					   V1Res, V2Res, V3Res, Recv, NetIf)
+					   V1Res, V2Res, V3Res, Recv, 
+					   LocalEngineID, NetIf)
 		    end;
 		true when MpModel =:= ?MP_V2C ->
 		    ?vtrace("send_trap_pdus -> v2c mp model",[]),
-		    ContextEngineId = snmp_framework_mib:get_engine_id(),
+		    ContextEngineId = LocalEngineID, 
 		    case snmp_community_mib:vacm2community({SecName,
 							    ContextEngineId,
 							    ContextName},
@@ -664,12 +679,13 @@ send_trap_pdus([{DestAddr, TargetName, {MpModel, SecModel, SecName, SecLevel},
 			    send_trap_pdus(T, ContextName, {TrapRec, Vbs},
 					   V1Res,
 					   [{DestAddr, Community, Type}|V2Res],
-					   V3Res, Recv, NetIf);
+					   V3Res, Recv, LocalEngineID, NetIf);
 			undefined ->
 			    ?vdebug("No community found for v2c dest: ~p", 
 				    [element(2, DestAddr)]),
 			    send_trap_pdus(T, ContextName, {TrapRec, Vbs},
-					   V1Res, V2Res, V3Res, Recv, NetIf)
+					   V1Res, V2Res, V3Res, Recv, 
+					   LocalEngineID, NetIf)
 		    end;
 		true when MpModel =:= ?MP_V3 ->
 		    ?vtrace("send_trap_pdus -> v3 mp model",[]),
@@ -678,18 +694,20 @@ send_trap_pdus([{DestAddr, TargetName, {MpModel, SecModel, SecName, SecLevel},
 		    send_trap_pdus(T, ContextName, {TrapRec, Vbs},
 				   V1Res, V2Res,
 				   [{DestAddr, MsgData, Type} | V3Res],
-				   Recv, NetIf);
+				   Recv, LocalEngineID, NetIf);
 		true ->
 		    ?vlog("bad MpModel ~p for dest ~p",
 			  [MpModel, element(2, DestAddr)]),
 		    send_trap_pdus(T, ContextName, {TrapRec, Vbs},
-				   V1Res, V2Res, V3Res, Recv, NetIf);
+				   V1Res, V2Res, V3Res, Recv, 
+				   LocalEngineID, NetIf);
 		_ ->
 		    ?vlog("no access for dest: "
 			  "~n   ~p in target ~p",
 			  [element(2, DestAddr), TargetName]),
 		    send_trap_pdus(T, ContextName, {TrapRec, Vbs},
-				   V1Res, V2Res, V3Res, Recv, NetIf)
+				   V1Res, V2Res, V3Res, Recv, 
+				   LocalEngineID, NetIf)
 	    end;
 	{discarded, Reason} ->
 	    ?vlog("mib view error ~p for"
@@ -697,10 +715,10 @@ send_trap_pdus([{DestAddr, TargetName, {MpModel, SecModel, SecName, SecLevel},
 		  "~n   SecName: ~w", 
 		  [Reason, element(2, DestAddr), SecName]),
 	    send_trap_pdus(T, ContextName, {TrapRec, Vbs},
-			   V1Res, V2Res, V3Res, Recv, NetIf)
+			   V1Res, V2Res, V3Res, Recv, LocalEngineID, NetIf)
     end;
 send_trap_pdus([], ContextName, {TrapRec, Vbs}, V1Res, V2Res, V3Res,
-	       Recv, NetIf) ->
+	       Recv, LocalEngineID, NetIf) ->
     SysUpTime = snmp_standard_mib:sys_up_time(),
     ?vdebug("send trap pdus with sysUpTime ~p", [SysUpTime]),
     InformRecvs   = get_inform_recvs(V2Res ++ V3Res),
@@ -708,7 +726,8 @@ send_trap_pdus([], ContextName, {TrapRec, Vbs}, V1Res, V2Res, V3Res,
     deliver_recv(Recv, snmp_targets, InformTargets),
     send_v1_trap(TrapRec, V1Res, Vbs, NetIf, SysUpTime),
     send_v2_trap(TrapRec, V2Res, Vbs, Recv, NetIf, SysUpTime),
-    send_v3_trap(TrapRec, V3Res, Vbs, Recv, NetIf, SysUpTime, ContextName).
+    send_v3_trap(TrapRec, V3Res, Vbs, Recv, LocalEngineID, NetIf, 
+		 SysUpTime, ContextName).
 
 send_v1_trap(_TrapRec, [], _Vbs, _NetIf, _SysUpTime) ->
     ok;
@@ -762,21 +781,25 @@ send_v2_trap(TrapRec, V2Res, Vbs, Recv, NetIf, SysUpTime) ->
     do_send_v2_trap(TrapRecvs, IVbs, NetIf),
     do_send_v2_inform(InformRecvs, IVbs, Recv, NetIf).
     
-send_v3_trap(_TrapRec, [], _Vbs, _Recv, _NetIf, _SysUpTime, _ContextName) ->
+send_v3_trap(_TrapRec, [], _Vbs, _Recv, _LocalEngineID, 
+	     _NetIf, _SysUpTime, _ContextName) ->
     ok;
-send_v3_trap(TrapRec, V3Res, Vbs, Recv, NetIf, SysUpTime, ContextName) ->
+send_v3_trap(TrapRec, V3Res, Vbs, Recv, LocalEngineID, 
+	     NetIf, SysUpTime, ContextName) ->
     ?vdebug("prepare to send v3 trap",[]),
     {_Oid, IVbs} = mk_v2_trap(TrapRec, Vbs, SysUpTime), % v2 refers to SMIv2;
-    TrapRecvs = get_trap_recvs(V3Res),                 % same SMI for v3
+    TrapRecvs = get_trap_recvs(V3Res),                  % same SMI for v3
     InformRecvs = get_inform_recvs(V3Res),
     do_send_v3_trap(TrapRecvs, ContextName, IVbs, NetIf),
-    do_send_v3_inform(InformRecvs, ContextName, IVbs, Recv, NetIf).
+    do_send_v3_inform(InformRecvs, ContextName, IVbs, Recv, 
+		      LocalEngineID, NetIf).
     
 
 mk_v2_trap(#notification{oid = Oid}, Vbs, SysUpTime) ->
     ?vtrace("make v2 notification '~p'",[Oid]),
     mk_v2_notif(Oid, Vbs, SysUpTime);
-mk_v2_trap(#trap{enterpriseoid = Enter, specificcode = Spec}, Vbs, SysUpTime) ->
+mk_v2_trap(#trap{enterpriseoid = Enter, specificcode = Spec}, 
+	   Vbs, SysUpTime) ->
     %% Use alg. in rfc1908 to map a v1 trap to a v2 trap
     ?vtrace("make v2 trap for '~p' with ~p",[Enter,Spec]),
     {Oid,Enterp} = 
@@ -845,16 +868,16 @@ do_send_v3_trap(Recvs, ContextName, Vbs, NetIf) ->
 		  end, Recvs),
     ok.
 
-do_send_v3_inform([], _ContextName, _Vbs, _Recv, _NetIf) ->
+do_send_v3_inform([], _ContextName, _Vbs, _Recv, _LocalEngineID, _NetIf) ->
     ok;
-do_send_v3_inform(Recvs, ContextName, Vbs, Recv, NetIf) ->
+do_send_v3_inform(Recvs, ContextName, Vbs, Recv, LocalEngineID, NetIf) ->
     lists:foreach(
       fun({Addr, MsgData, Timeout, Retry}) ->
 	      ?vtrace("~n   start inform sender to send v3 inform to ~p",
 		      [Addr]),
 	      proc_lib:spawn_link(?MODULE, init_v3_inform,
 				  [{Addr, MsgData}, Timeout, Retry, Vbs,
-				   Recv, NetIf, ContextName,
+				   Recv, LocalEngineID, NetIf, ContextName,
 				   get(verbosity), get(sname)])
       end, 
       Recvs).
@@ -874,7 +897,13 @@ init_v2_inform(Addr, Timeout, Retry, Vbs, Recv, NetIf, Community,V,S) ->
     
 
 %% New process
-init_v3_inform(Addr, Timeout, Retry, Vbs, Recv, NetIf, ContextName,V,S) ->
+init_v3_inform(Addr, Timeout, Retry, Vbs, Recv, NetIf, ContextName, V, S) ->
+    LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID, 
+    init_v3_inform(Addr, Timeout, Retry, Vbs, Recv, LocalEngineID, 
+		   NetIf, ContextName, V, S).
+
+init_v3_inform(Addr, Timeout, Retry, Vbs, Recv, LocalEngineID, 
+	       NetIf, ContextName, V, S) ->
     %% Make a new Inform for each recipient; they need unique
     %% request-ids!
     put(verbosity,V),
@@ -882,7 +911,7 @@ init_v3_inform(Addr, Timeout, Retry, Vbs, Recv, NetIf, ContextName,V,S) ->
     ?vdebug("~n   starting with timeout = ~p and retry = ~p",
 	    [Timeout,Retry]),
     InformPdu = make_v2_notif_pdu(Vbs, 'inform-request'), % Yes, v2
-    ContextEngineId = snmp_framework_mib:get_engine_id(),
+    ContextEngineId = LocalEngineID, 
     Msg = {send_pdu_req, 'version-3', InformPdu,
 	   {v3, ContextEngineId, ContextName}, [Addr], self()},
     ?MODULE:send_inform(Addr, Timeout*10, Retry, Msg, Recv, NetIf).
diff --git a/lib/snmp/src/agent/snmpa_usm.erl b/lib/snmp/src/agent/snmpa_usm.erl
index b94294844b..ae584bb3c1 100644
--- a/lib/snmp/src/agent/snmpa_usm.erl
+++ b/lib/snmp/src/agent/snmpa_usm.erl
@@ -19,8 +19,8 @@
 -module(snmpa_usm).
 
 -export([
-	 process_incoming_msg/4, 
-	 generate_outgoing_msg/5,
+	 process_incoming_msg/4, process_incoming_msg/5, 
+	 generate_outgoing_msg/5, generate_outgoing_msg/6,
 	 generate_discovery_msg/4, generate_discovery_msg/5,
 	 current_statsNotInTimeWindows_vb/0
 	]).
@@ -33,6 +33,7 @@
 
 -define(VMODULE,"A-USM").
 -include("snmp_verbosity.hrl").
+-include("snmpa_internal.hrl").
 
 
 %%-----------------------------------------------------------------
@@ -58,7 +59,11 @@
 %%-----------------------------------------------------------------
 
 process_incoming_msg(Packet, Data, SecParams, SecLevel) ->
-    TermDiscoEnabled = is_terminating_discovery_enabled(), 
+    LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID, 
+    process_incoming_msg(Packet, Data, SecParams, SecLevel, LocalEngineID).
+
+process_incoming_msg(Packet, Data, SecParams, SecLevel, LocalEngineID) ->
+    TermDiscoEnabled    = is_terminating_discovery_enabled(), 
     TermTriggerUsername = terminating_trigger_username(), 
     %% 3.2.1
     ?vtrace("process_incoming_msg -> check security parms: 3.2.1",[]),
@@ -124,7 +129,7 @@ process_incoming_msg(Packet, Data, SecParams, SecLevel) ->
 		    "~n   ~p",[UsmUser]),
 	    DiscoOrPlain = authenticate_incoming(Packet, 
 						 UsmSecParams, UsmUser, 
-						 SecLevel), 
+						 SecLevel, LocalEngineID), 
 	    %% 3.2.8
 	    ?vtrace("process_incoming_msg -> "
 		    "decrypt scoped data: 3.2.8",[]),
@@ -166,7 +171,8 @@ process_discovery_msg(MsgAuthEngineID, Data, SecLevel) ->
     end.
 	    
 
-authenticate_incoming(Packet, UsmSecParams, UsmUser, SecLevel) ->
+authenticate_incoming(Packet, UsmSecParams, UsmUser, SecLevel, 
+		      LocalEngineID) ->
     %% 3.2.6
     ?vtrace("authenticate_incoming -> 3.2.6", []),
     AuthProtocol = element(?usmUserAuthProtocol, UsmUser),
@@ -190,7 +196,8 @@ authenticate_incoming(Packet, UsmSecParams, UsmUser, SecLevel) ->
 			 SecName,
 			 MsgAuthEngineID,
 			 MsgAuthEngineBoots, 
-			 MsgAuthEngineTime) of
+			 MsgAuthEngineTime,
+			 LocalEngineID) of
 		discovery ->
 		    discovery;
 		true -> 
@@ -205,15 +212,15 @@ authenticate_incoming(Packet, UsmSecParams, UsmUser, SecLevel) ->
 	    plain
     end.
 	    
-authoritative(SecName, MsgAuthEngineBoots, MsgAuthEngineTime) ->
+authoritative(SecName, MsgAuthEngineBoots, MsgAuthEngineTime, LocalEngineID) ->
     ?vtrace("authoritative -> entry with"
 	    "~n   SecName:            ~p"
 	    "~n   MsgAuthEngineBoots: ~p"
 	    "~n   MsgAuthEngineTime:  ~p", 
 	    [SecName, MsgAuthEngineBoots, MsgAuthEngineTime]),
-    SnmpEngineBoots = snmp_framework_mib:get_engine_boots(),
+    SnmpEngineBoots = get_local_engine_boots(LocalEngineID),
     ?vtrace("authoritative -> SnmpEngineBoots: ~p", [SnmpEngineBoots]),
-    SnmpEngineTime = snmp_framework_mib:get_engine_time(),
+    SnmpEngineTime = get_local_engine_time(LocalEngineID),
     ?vtrace("authoritative -> SnmpEngineTime: ~p", [SnmpEngineTime]),
     InTimeWindow =
 	if
@@ -320,11 +327,12 @@ non_authoritative(SecName,
     end.
 
       
-is_auth(?usmNoAuthProtocol, _, _, _, SecName, _, _, _) -> % 3.2.5
+is_auth(?usmNoAuthProtocol, _, _, _, SecName, _, _, _, _) -> % 3.2.5
     error(usmStatsUnsupportedSecLevels,
 	  ?usmStatsUnsupportedSecLevels_instance, SecName); % OTP-5464
 is_auth(AuthProtocol, AuthKey, AuthParams, Packet, SecName,
-	MsgAuthEngineID, MsgAuthEngineBoots, MsgAuthEngineTime) ->
+	MsgAuthEngineID, MsgAuthEngineBoots, MsgAuthEngineTime, 
+	LocalEngineID) ->
     TermDiscoEnabled = is_terminating_discovery_enabled(), 
     TermDiscoStage2  = terminating_discovery_stage2(), 
     IsAuth = auth_in(AuthProtocol, AuthKey, AuthParams, Packet),
@@ -334,7 +342,7 @@ is_auth(AuthProtocol, AuthKey, AuthParams, Packet, SecName,
 	    %% 3.2.7
 	    ?vtrace("is_auth -> "
 		    "retrieve EngineBoots and EngineTime: 3.2.7",[]),
-	    SnmpEngineID = snmp_framework_mib:get_engine_id(),
+	    SnmpEngineID = LocalEngineID,
 	    ?vtrace("is_auth -> SnmpEngineID: ~p", [SnmpEngineID]),
 	    case MsgAuthEngineID of
 		SnmpEngineID when ((MsgAuthEngineBoots =:= 0) andalso 
@@ -351,12 +359,14 @@ is_auth(AuthProtocol, AuthKey, AuthParams, Packet, SecName,
 		    %% This will *always* result in the manager *not* 
 		    %% beeing in timewindow
 		    authoritative(SecName, 
-				  MsgAuthEngineBoots, MsgAuthEngineTime);
+				  MsgAuthEngineBoots, MsgAuthEngineTime, 
+				  LocalEngineID);
 
 		SnmpEngineID -> %% 3.2.7a
 		    ?vtrace("is_auth -> we are authoritative: 3.2.7a", []),
 		    authoritative(SecName, 
-				  MsgAuthEngineBoots, MsgAuthEngineTime);
+				  MsgAuthEngineBoots, MsgAuthEngineTime, 
+				  LocalEngineID);
 
 		_ -> %% 3.2.7b - we're non-authoritative
 		    ?vtrace("is_auth -> we are non-authoritative: 3.2.7b",[]),
@@ -418,12 +428,19 @@ try_decrypt(?usmAesCfb128Protocol,
 
 
 generate_outgoing_msg(Message, SecEngineID, SecName, SecData, SecLevel) ->
+    LocalEngineID = ?DEFAULT_LOCAL_ENGINE_ID, 
+    generate_outgoing_msg(Message, SecEngineID, SecName, SecData, SecLevel, 
+			  LocalEngineID).
+
+generate_outgoing_msg(Message, SecEngineID, SecName, SecData, SecLevel, 
+		      LocalEngineID) ->
     %% 3.1.1
     ?vtrace("generate_outgoing_msg -> [3.1.1] entry with"
-	    "~n   SecEngineID: ~p"
-	    "~n   SecName:     ~p"
-	    "~n   SecLevel:    ~w", 
-	    [SecEngineID, SecName, SecLevel]),
+	    "~n   SecEngineID:   ~p"
+	    "~n   SecName:       ~p"
+	    "~n   SecLevel:      ~w" 
+	    "~n   LocalEngineID: ~p", 
+	    [SecEngineID, SecName, SecLevel, LocalEngineID]),
     {UserName, AuthProtocol, PrivProtocol, AuthKey, PrivKey} =
 	case SecData of
 	    [] -> % 3.1.1b
@@ -439,7 +456,7 @@ generate_outgoing_msg(Message, SecEngineID, SecName, SecData, SecLevel) ->
 			 element(?usmUserPrivKey, User)};
 		    {_, Name,_,_,_,_,_,_,_,_,_,_,_, RowStatus,_,_} ->
 			?vdebug("generate_outgoing_msg -> "
-				"found user ~p with wrong row status: ~p", 
+				"found not active user ~p: ~p", 
 				[Name, RowStatus]),
 			error(unknownSecurityName);
 		    _ ->
@@ -460,7 +477,7 @@ generate_outgoing_msg(Message, SecEngineID, SecName, SecData, SecLevel) ->
     ScopedPduBytes = Message#message.data,
     {ScopedPduData, MsgPrivParams} =
 	encrypt(ScopedPduBytes, PrivProtocol, PrivKey, SecLevel),
-    SnmpEngineID = snmp_framework_mib:get_engine_id(),
+    SnmpEngineID = LocalEngineID, 
     ?vtrace("generate_outgoing_msg -> SnmpEngineID: ~p [3.1.6]",
 	    [SnmpEngineID]),
     %% 3.1.6
@@ -474,8 +491,8 @@ generate_outgoing_msg(Message, SecEngineID, SecName, SecData, SecLevel) ->
 		{get_engine_boots(SecEngineID),
 		 get_engine_time(SecEngineID)};
 	    _ ->
-		{snmp_framework_mib:get_engine_boots(),
-		 snmp_framework_mib:get_engine_time()}
+		{get_local_engine_boots(SnmpEngineID),
+		 get_local_engine_time(SnmpEngineID)}
 	end,
     %% 3.1.5 - 3.1.7
     ?vtrace("generate_outgoing_msg -> [3.1.5 - 3.1.7]",[]),
@@ -681,6 +698,19 @@ current_statsNotInTimeWindows_vb() ->
 	     value        = get_counter(usmStatsNotInTimeWindows)}.
 
 
+
+%%-----------------------------------------------------------------
+%% Future profing...
+%%-----------------------------------------------------------------
+
+get_local_engine_boots(_LocalEngineID) ->
+    snmp_framework_mib:get_engine_boots().
+
+get_local_engine_time(_LocalEngineID) ->
+    snmp_framework_mib:get_engine_time().
+
+
+
 %%-----------------------------------------------------------------
 %% We cache the local values of all non-auth engines we know.
 %% Keep the values in the snmp_agent_table.
diff --git a/lib/snmp/src/app/snmp.appup.src b/lib/snmp/src/app/snmp.appup.src
index a138a2dfd1..9ad16ffad2 100644
--- a/lib/snmp/src/app/snmp.appup.src
+++ b/lib/snmp/src/app/snmp.appup.src
@@ -22,44 +22,68 @@
 %% ----- U p g r a d e -------------------------------------------------------
 
  [
+  {"4.16.2", 
+   [
+    {load_module, snmp_log, soft_purge, soft_purge, []},
+    {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent]},
+    {load_module, snmpa_mpd, soft_purge, soft_purge, [snmpa_usm]},
+    {load_module, snmpa_usm, soft_purge, soft_purge, []},
+    {update, snmpa_agent, soft, soft_purge, soft_purge, []},
+
+    {load_module, snmpm_mpd, soft_purge, soft_purge, []}
+   ]
+  }, 
   {"4.16.1", 
    [
+    {load_module, snmp_log, soft_purge, soft_purge, []},
+    {load_module, snmp_pdus, soft_purge, soft_purge, []},
+    {load_module, snmp_usm, soft_purge, soft_purge, []},
+
     {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent]},
+    {load_module, snmpa_mpd, soft_purge, soft_purge, [snmpa_usm]},
     {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
-    {load_module, snmp_usm, soft_purge, soft_purge, []},
-    {load_module, snmp_pdus, soft_purge, soft_purge, []},
-    {update,      snmpm_server, soft, soft_purge, soft_purge, []},
     {update,      snmpa_mib, soft, soft_purge, soft_purge, []}, 
-    {update,      snmpa_agent, soft, soft_purge, soft_purge, [snmpa_mib]}
+    {update,      snmpa_agent, soft, soft_purge, soft_purge, [snmpa_mib]},
+
+    {load_module, snmpm_mpd, soft_purge, soft_purge, []}, 
+    {update,      snmpm_server, soft, soft_purge, soft_purge, []}
    ]
   }, 
   {"4.16", 
    [
-    {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent]},
-    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
-    {load_module, snmp_usm, soft_purge, soft_purge, []},
+    {load_module, snmp_log, soft_purge, soft_purge, []},
     {load_module, snmp_pdus, soft_purge, soft_purge, []}, 
+    {load_module, snmp_usm, soft_purge, soft_purge, []},
+
+    {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent]},
     {load_module, snmpa_general_db, soft_purge, soft_purge, []},
-    {update,      snmpm_net_if, soft, soft_purge, soft_purge, []},
-    {update,      snmpm_server, soft, soft_purge, soft_purge, []},
+    {load_module, snmpa_mpd, soft_purge, soft_purge, [snmpa_usm]},
+    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
     {update,      snmpa_mib, soft, soft_purge, soft_purge, []}, 
-    {update,      snmpa_agent, soft, soft_purge, soft_purge, [snmpa_mib]}
+    {update,      snmpa_agent, soft, soft_purge, soft_purge, [snmpa_mib]}, 
+
+    {load_module, snmpm_mpd, soft_purge, soft_purge, []},
+    {update,      snmpm_net_if, soft, soft_purge, soft_purge, []},
+    {update,      snmpm_server, soft, soft_purge, soft_purge, []}
    ]
   }, 
   {"4.15",   
    [
-    {load_module, snmp_pdus, soft_purge, soft_purge, []}, 
-    {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent, snmp_log]},
     {load_module, snmp_config, soft_purge, soft_purge, []},
     {load_module, snmp_log, soft_purge, soft_purge, []},
+    {load_module, snmp_pdus, soft_purge, soft_purge, []}, 
+    {load_module, snmp_usm, soft_purge, soft_purge, []},
+
+    {load_module, snmpa, soft_purge, soft_purge, [snmp_log, snmpa_agent]},
     {load_module, snmpa_general_db, soft_purge, soft_purge, []},
+    {load_module, snmpa_mpd, soft_purge, soft_purge, [snmpa_usm]},
+    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
     {update,      snmpa_net_if, {advanced, upgrade_from_pre_4_16}, 
      soft_purge, soft_purge, [snmpa_agent, snmp_log]}, 
     {update,      snmpa_mib, soft, soft_purge, soft_purge, []}, 
     {update,      snmpa_agent, soft, soft_purge, soft_purge, [snmpa_mib]},
-    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
-    {load_module, snmp_usm, soft_purge, soft_purge, []},
 
+    {load_module, snmpm_mpd, soft_purge, soft_purge, []}, 
     {update,      snmpm_net_if, {advanced, upgrade_from_pre_4_16}, 
      soft_purge, soft_purge, [snmpm_config, snmp_log]}, 
     {update,      snmpm_config, soft, soft_purge, soft_purge, []},
@@ -68,18 +92,21 @@
   }, 
   {"4.14",   
    [
-    {load_module, snmp_pdus, soft_purge, soft_purge, []}, 
-    {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent, snmp_log]},
     {load_module, snmp_config, soft_purge, soft_purge, []},
     {load_module, snmp_log, soft_purge, soft_purge, []},
+    {load_module, snmp_pdus, soft_purge, soft_purge, []}, 
+    {load_module, snmp_usm, soft_purge, soft_purge, []},
+
+    {load_module, snmpa, soft_purge, soft_purge, [snmp_log, snmpa_agent]},
     {load_module, snmpa_general_db, soft_purge, soft_purge, []},
+    {load_module, snmpa_mpd, soft_purge, soft_purge, [snmpa_usm]},
+    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
     {update, snmpa_net_if, {advanced, upgrade_from_pre_4_16}, 
-     soft_purge, soft_purge, [snmpa_agent, snmp_log]}, 
+     soft_purge, soft_purge, [snmp_log, snmpa_agent]}, 
     {update, snmpa_mib, soft, soft_purge, soft_purge, []},
     {update, snmpa_agent, soft, soft_purge, soft_purge, [snmpa_mib]},
-    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
-    {load_module, snmp_usm, soft_purge, soft_purge, []},
 
+    {load_module, snmpm_mpd, soft_purge, soft_purge, []},
     {load_module, snmpm_user, soft_purge, soft_purge, []}, 
     {load_module, snmpm_user_default, soft_purge, soft_purge, [snmpm_user]}, 
     {update, snmpm_net_if, {advanced, upgrade_from_pre_4_16}, 
@@ -91,19 +118,22 @@
   }, 
   {"4.13.5",   
    [
-    {load_module, snmp_pdus, soft_purge, soft_purge, []}, 
-    {load_module, snmpa_mib_data, soft_purge, soft_purge, []},
-    {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent, snmp_log]},
     {load_module, snmp_config, soft_purge, soft_purge, []},
     {load_module, snmp_log, soft_purge, soft_purge, []},
+    {load_module, snmp_pdus, soft_purge, soft_purge, []}, 
+    {load_module, snmp_usm, soft_purge, soft_purge, []},
+
+    {load_module, snmpa, soft_purge, soft_purge, [snmp_log, snmpa_agent]},
     {load_module, snmpa_general_db, soft_purge, soft_purge, []},
+    {load_module, snmpa_mib_data, soft_purge, soft_purge, []},
+    {load_module, snmpa_mpd, soft_purge, soft_purge, [snmpa_usm]},
+    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
     {update, snmpa_net_if, {advanced, upgrade_from_pre_4_16}, 
      soft_purge, soft_purge, [snmpa_agent, snmp_log]}, 
     {update, snmpa_mib, soft, soft_purge, soft_purge, [snmpa_mib_data]},
     {update, snmpa_agent, soft, soft_purge, soft_purge, [snmpa_mib]},
-    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
-    {load_module, snmp_usm, soft_purge, soft_purge, []},
 
+    {load_module, snmpm_mpd, soft_purge, soft_purge, []},
     {load_module, snmpm_user, soft_purge, soft_purge, []}, 
     {load_module, snmpm_user_default, soft_purge, soft_purge, [snmpm_user]}, 
     {update, snmpm_net_if, {advanced, upgrade_from_pre_4_14}, 
@@ -119,45 +149,69 @@
 %% ------D o w n g r a d e ---------------------------------------------------
 
  [
+  {"4.16.2", 
+   [
+    {load_module, snmp_log, soft_purge, soft_purge, []},
+
+    {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent]},
+    {load_module, snmpa_mpd, soft_purge, soft_purge, [snmpa_usm]},
+    {load_module, snmpa_usm, soft_purge, soft_purge, []},
+    {update, snmpa_agent, soft, soft_purge, soft_purge, []},
+
+    {load_module, snmpm_mpd, soft_purge, soft_purge, []}
+   ]
+  }, 
   {"4.16.1", 
    [
+    {load_module, snmp_log, soft_purge, soft_purge, []},
+    {load_module, snmp_pdus, soft_purge, soft_purge, []},
+    {load_module, snmp_usm, soft_purge, soft_purge, []},
+
     {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent]},
+    {load_module, snmpa_mpd, soft_purge, soft_purge, [snmpa_usm]},
     {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
-    {load_module, snmp_usm, soft_purge, soft_purge, []},
-    {load_module, snmp_pdus, soft_purge, soft_purge, []},
-    {update,      snmpm_server, soft, soft_purge, soft_purge, []},
     {update,      snmpa_mib, soft, soft_purge, soft_purge, []}, 
-    {update,      snmpa_agent, soft, soft_purge, soft_purge, [snmpa_mib]}
+    {update,      snmpa_agent, soft, soft_purge, soft_purge, [snmpa_mib]},
+
+    {load_module, snmpm_mpd, soft_purge, soft_purge, []}, 
+    {update,      snmpm_server, soft, soft_purge, soft_purge, []}
    ]
   }, 
   {"4.16", 
    [
-    {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent]},
-    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
-    {load_module, snmp_usm, soft_purge, soft_purge, []},
+    {load_module, snmp_log, soft_purge, soft_purge, []},
     {load_module, snmp_pdus, soft_purge, soft_purge, []}, 
+    {load_module, snmp_usm, soft_purge, soft_purge, []},
+
+    {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent]},
     {load_module, snmpa_general_db, soft_purge, soft_purge, []},
-    {update,      snmpm_net_if, soft, soft_purge, soft_purge, []},
-    {update,      snmpm_server, soft, soft_purge, soft_purge, []},
+    {load_module, snmpa_mpd, soft_purge, soft_purge, [snmpa_usm]},
+    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
     {update,      snmpa_mib, soft, soft_purge, soft_purge, []}, 
-    {update,      snmpa_agent, soft, soft_purge, soft_purge, [snmpa_mib]}
+    {update,      snmpa_agent, soft, soft_purge, soft_purge, [snmpa_mib]},
+
+    {load_module, snmpm_mpd, soft_purge, soft_purge, []},
+    {update,      snmpm_net_if, soft, soft_purge, soft_purge, []},
+    {update,      snmpm_server, soft, soft_purge, soft_purge, []}
    ]
   }, 
   {"4.15",   
    [
-    {load_module, snmp_pdus, soft_purge, soft_purge, []}, 
-    {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent, snmp_log]},
     {load_module, snmp_config, soft_purge, soft_purge, []},
     {load_module, snmp_log, soft_purge, soft_purge, []},
+    {load_module, snmp_pdus, soft_purge, soft_purge, []}, 
+    {load_module, snmp_usm, soft_purge, soft_purge, []},
+
+    {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent, snmp_log]},
     {load_module, snmpa_general_db, soft_purge, soft_purge, []},
+    {load_module, snmpa_mpd, soft_purge, soft_purge, [snmpa_usm]},
+    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
     {update,      snmpa_net_if, {advanced, downgrade_to_pre_4_16}, 
      soft_purge, soft_purge, [snmpa_agent, snmp_log]}, 
     {update,      snmpa_mib, soft, soft_purge, soft_purge, []}, 
     {update,      snmpa_agent, soft, soft_purge, soft_purge, [snmpa_mib]},
-    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
-    {load_module, snmp_usm, soft_purge, soft_purge, []},
 
-    {load_module, snmpa_general_db, soft_purge, soft_purge, []},
+    {load_module, snmpm_mpd, soft_purge, soft_purge, []}, 
     {update,      snmpm_net_if, {advanced, downgrade_to_pre_4_16}, 
      soft_purge, soft_purge, [snmpm_config, snmp_log]}, 
     {update,      snmpm_config, soft, soft_purge, soft_purge, []},
@@ -166,18 +220,21 @@
   }, 
   {"4.14",   
    [
-    {load_module, snmp_pdus, soft_purge, soft_purge, []}, 
-    {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent, snmp_log]},
     {load_module, snmp_config, soft_purge, soft_purge, []},
     {load_module, snmp_log, soft_purge, soft_purge, []},
+    {load_module, snmp_pdus, soft_purge, soft_purge, []}, 
+    {load_module, snmp_usm, soft_purge, soft_purge, []},
+
+    {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent, snmp_log]},
     {load_module, snmpa_general_db, soft_purge, soft_purge, []},
+    {load_module, snmpa_mpd, soft_purge, soft_purge, [snmpa_usm]},
+    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
     {update,      snmpa_net_if, {advanced, downgrade_to_pre_4_16}, 
      soft_purge, soft_purge, [snmpa_agent, snmp_log]}, 
     {update,      snmpa_mib, soft, soft_purge, soft_purge, []}, 
     {update,      snmpa_agent, soft, soft_purge, soft_purge, [snmpa_mib]},
-    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
-    {load_module, snmp_usm, soft_purge, soft_purge, []},
 
+    {load_module, snmpm_mpd, soft_purge, soft_purge, []},
     {load_module, snmpm_user, soft_purge, soft_purge, []}, 
     {load_module, snmpm_user_default, soft_purge, soft_purge, [snmpm_user]}, 
     {update,      snmpm_net_if, {advanced, downgrade_to_pre_4_16}, 
@@ -189,19 +246,22 @@
   }, 
   {"4.13.5",
    [
-    {load_module, snmp_pdus, soft_purge, soft_purge, []}, 
-    {load_module, snmpa_mib_data, soft_purge, soft_purge, []},
     {load_module, snmp_config, soft_purge, soft_purge, []},
-    {load_module, snmpa, soft_purge, soft_purge, [snmpa_agent, snmp_log]},
     {load_module, snmp_log, soft_purge, soft_purge, []},
+    {load_module, snmp_pdus, soft_purge, soft_purge, []}, 
+    {load_module, snmp_usm, soft_purge, soft_purge, []},
+
+    {load_module, snmpa, soft_purge, soft_purge, [snmp_log, snmpa_agent]},
     {load_module, snmpa_general_db, soft_purge, soft_purge, []},
+    {load_module, snmpa_mib_data, soft_purge, soft_purge, []},
+    {load_module, snmpa_mpd, soft_purge, soft_purge, [snmpa_usm]},
+    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
     {update, snmpa_net_if, {advanced, downgrade_to_pre_4_16}, 
      soft_purge, soft_purge, [snmpa_agent, snmp_log]}, 
     {update,      snmpa_mib, soft, soft_purge, soft_purge, [snmpa_mib_data]}, 
     {update,      snmpa_agent, soft, soft_purge, soft_purge, [snmpa_mib]},
-    {load_module, snmpa_usm, soft_purge, soft_purge, [snmp_usm]},
-    {load_module, snmp_usm, soft_purge, soft_purge, []},
 
+    {load_module, snmpm_mpd, soft_purge, soft_purge, []},
     {load_module, snmpm_user, soft_purge, soft_purge, []}, 
     {load_module, snmpm_user_default, soft_purge, soft_purge, [snmpm_user]}, 
     {update, snmpm_net_if, {advanced, downgrade_to_pre_4_14}, 
diff --git a/lib/snmp/src/manager/snmpm_mpd.erl b/lib/snmp/src/manager/snmpm_mpd.erl
index d76ad20051..7712370d28 100644
--- a/lib/snmp/src/manager/snmpm_mpd.erl
+++ b/lib/snmp/src/manager/snmpm_mpd.erl
@@ -1,19 +1,19 @@
 %% 
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 2004-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 2004-2010. All Rights Reserved.
+%%
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
 %% compliance with the License. You should have received a copy of the
 %% Erlang Public License along with this software. If not, it can be
 %% retrieved online at http://www.erlang.org/.
-%% 
+%%
 %% Software distributed under the License is distributed on an "AS IS"
 %% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 %% the License for the specific language governing rights and limitations
 %% under the License.
-%% 
+%%
 %% %CopyrightEnd%
 %% 
 
@@ -257,11 +257,11 @@ process_v3_msg(NoteStore, Msg, Hdr, Data, Addr, Port, Log) ->
 	end,
 
     ?vlog("7.2.7"
-	  "~n   ContextEngineID: \"~s\" "
+	  "~n   ContextEngineID: ~p "
 	  "~n   context:         \"~s\" ",
 	  [CtxEngineID, CtxName]),
     if
-	SecLevel == 3 -> % encrypted message - log decrypted pdu
+	SecLevel =:= 3 -> % encrypted message - log decrypted pdu
 	    Log({Hdr, ScopedPDUBytes});
 	true -> % otherwise, log binary
 	    Log(Msg)
@@ -338,7 +338,8 @@ process_v3_msg(NoteStore, Msg, Hdr, Data, Addr, Port, Log) ->
 	    SnmpEngineID = get_engine_id(),
 	    case SecEngineID of
 		SnmpEngineID -> % 7.2.13.b
-		    ?vtrace("valid securityEngineID: ~p", [SecEngineID]),
+		    ?vtrace("7.2.13d - valid securityEngineID: ~p", 
+			    [SecEngineID]),
 		    %% 4.2.2.1.1 - we don't handle proxys yet => we only 
 		    %% handle CtxEngineID to ourselves
 		    %% Check that we actually know of an agent with this
@@ -353,7 +354,9 @@ process_v3_msg(NoteStore, Msg, Hdr, Data, Addr, Port, Log) ->
 				{MsgID, MsgSecModel, SecName, SecLevel,
 				 CtxEngineID, CtxName, SecData},
 			    {ok, 'version-3', PDU, PduMMS, ACMData};
-			_ ->
+			UnknownEngineID ->
+			    ?vtrace("4.2.2.1.2 - UnknownEngineId: ~p", 
+				    [UnknownEngineID]),
 			    %% 4.2.2.1.2
 			    NIsReportable = snmp_misc:is_reportable_pdu(Type),
 			    Val = inc(snmpUnknownPDUHandlers),
@@ -377,7 +380,8 @@ process_v3_msg(NoteStore, Msg, Hdr, Data, Addr, Port, Log) ->
 			    end
 		    end;
 		_ -> % 7.2.13.a
-		    ?vinfo("invalid securityEngineID: ~p",[SecEngineID]),
+		    ?vinfo("7.2.13a - invalid securityEngineID: ~p", 
+			   [SecEngineID]),
 		    discard({badSecurityEngineID, SecEngineID})
 	    end;