1 SNMP Release Notes
1.1 SNMP Development Toolkit v4.1.1
Version 4.1.1 supports code replacement in runtime from/to
version 4.1.
When performing a downgrade, make sure the verbosity of the
manager server process is silence, or else the process will crash
(due to a bug in version 4.0.4) and be restarted by it's
supervisor.
1.1.1 Improvements and new features
-
1.1.2 Reported Fixed Bugs and Malfunctions
-
[manager] Manager synchronous get-function with timeout erroneous.
Results in a function clause.
Own Id: OTP-5364
-
Replace in decoder fun's of the "old style" fun format,
{atom(), atom()}, with a proper fun, e.g. "fun the_function/1".
Own Id: OTP-5365
-
[manager] Register agent using the config file
agents.conf failed due to incorrect function guard.
Own Id: OTP-5367
1.1.3 Incompatibilities
-
1.2 SNMP Development Toolkit v4.1.0
Version 4.1.0 supports code replacement in runtime from/to
version 4.0.4.
When performing a downgrade, make sure the verbosity of the
manager server process is silence, or else the process will crash
(due to a bug in version 4.0.4) and be restarted by it's
supervisor.
1.2.1 Improvements and new features
-
[manager] Added possibility to monitor a registered user.
See snmpm:register_user_monitor.
Own Id: OTP-5286
-
[agent] Improved symbolic store. Alias and Oids where stored
with similar key's (seperated by types: atom() and
lists() respectively). Also added new function:
snmpa:which_aliasnames.
Own Id: OTP-5298
-
[agent] The agent local_db volatile storage method uses
an ets-table which is private. This table has been made
protected in order to make it easier to bedug and test the
snmp agent.
Own Id: OTP-5308
1.2.2 Reported Fixed Bugs and Malfunctions
-
Misspelled deprecated function. Non-existent function
snmp:is_constistent/1 was marked as depricated. Should
have been snmp:is_consistent/1).
Own Id: OTP-5273
-
[agent] Unclear documentation for function
snmpa:send_notification. The Recv argument
(specifically the {M,F,A} variant).
Own Id: OTP-5281
-
[manager] It was never documented how the default user
behaviour could be overriden (default user is the module
snmpm_user_default).
See application configuration or
configuration params.
Own Id: OTP-5299
-
[manager] The server process contained a bug that caused it
to crash, if it received an exit message from it's gct (GC timer)
process and it's verbosity was log or higher.
This also effects the application dowgrade.
Own Id: OTP-5306
-
[agent] The agent config file, target_addr.conf, was
incorrectly described in the
Target Address Definitions chapter of the
User's Guide. The EngineId option was left out.
Own Id: OTP-5307
Aux Id: Seq 9689
-
[manager] When a InformRequest is received, the manager sends
a response message. This did not include the varbinds
of the original message.
See RFC 3416, chapter 4.2.7.
Own Id: OTP-5314
-
[manager] Erroneous function guards made it possible to update
some agent info (that should be "static").
Own Id: OTP-5315
1.2.3 Incompatibilities
-
1.3 SNMP Development Toolkit v4.0.4
Version 4.0.4 supports code replacement in runtime from/to
version 4.0.3, 4.0.2, 4.0.1 and 4.0.
1.3.1 Improvements and new features
-
1.3.2 Reported Fixed Bugs and Malfunctions
-
[manager] The timeout calculation for the request
gc timer incorrect.
Own Id: OTP-5267
1.3.3 Incompatibilities
-
1.4 SNMP Development Toolkit v4.0.3
Version 4.0.3 supports code replacement in runtime from/to
version 4.0.2, 4.0.1 and 4.0.
1.4.1 Improvements and new features
-
1.4.2 Reported Fixed Bugs and Malfunctions
-
[manager] Some basic SNMP types where not handled when
performing set-requests
(snmpm:s and
snmpm:as):
'BITS' (b), 'IpAddress' (ip), 'Opaque' (op),
'Counter32' (c32), 'Counter64' (c64) and 'TimeTicks' (tt).
Own Id: OTP-5256
-
[manager] Unnecessary error message when receiving trap from
unregistered agent or agent using other port then the
request port for trap-sending.
Own Id: OTP-5258
1.4.3 Incompatibilities
-
1.5 SNMP Development Toolkit v4.0.2
Version 4.0.2 supports code replacement in runtime from/to
version 4.0.1 and 4.0.
1.5.1 Improvements and new features
-
[manager] When the net_if process failed to send a message, for
whatever reason, this is just dropped. And the user is
"left hanging". Now, if the request is syncroneous,
it will return with a proper reason
(see snmpm:g,
snmpm:gn and
snmpm:s), and if the request
was asynchroneous, the new callback function,
handle_error
(see snmpm_user) is
called.
Own Id: OTP-5242
1.5.2 Reported Fixed Bugs and Malfunctions
-
[manager] The arguments CtxName and Port was swapped in the
function snmpm:g/6.
Own Id: OTP-5225
-
[manager] TRAP receive failes for unknown agent due to
failing message size calculation.
Own Id: OTP-5241
1.5.3 Incompatibilities
-
[manager] Introduced a new callback function in the behaviour
snmpm_user.
Own Id: OTP-5242
1.6 SNMP Development Toolkit v4.0.1
Version 4.0.1 supports code replacement in runtime from/to version 4.0.
1.6.1 Improvements and new features
-
[agent] Added functions to get a list of all mibs loaded into
an agent
(see snmpa:which_mibs)
and to get the (full path) file name of a loaded mib (see
snmpa:whereis_mib).
Own Id: OTP-5187
1.6.2 Reported Fixed Bugs and Malfunctions
-
[manager] The wrong default value (1024) was used for the
net-if option recbuf. If no value is specified, then the OS
default shall be used.
Own Id: OTP-5196
1.6.3 Incompatibilities
-
1.7 SNMP Development Toolkit v4.0
1.7.1 Improvements and new features
-
[manager] Added a proper snmp manager.
Major restructure of the application in order to
incorporate the new manager.
-
[agent] Add a
snmpa:get/3
with an extra Context
argument. Also added similar snmpa:get_next/2,3
functions.
See snmpa:get and
snmpa:get_next.
Martin Björklund
Own Id: OTP-5054
-
[agent] Add notification filters. See
snmpa_notification_filter,
register_notification_filter,
unregister_notification_filter and
which_notification_filter.
Own Id: OTP-5055
-
[agent] Added two mib lookup functions,
me_of and
mib_of.
Own Id: OTP-5082
Aux Id: Seq 8848
-
[compiler] The MIB compiler is now (source code) independent
of the rest of the application (and vice versa).
-
[compiler] DISPLAY-HINT and UNITS included in the
compiled mib.
Own Id: OTP-5053
-
[compiler] Added compiler options
imports
and
module_identity
to include the imports list and
module identity (only SMIv2) info in the compiled mib,
see snmpc.
-
[compiler] Added the MIB compiler option
+no_defs
, see snmpc.
Martin Björklund
-
[compiler] Added the MIB compiler option
+'{module, atom()}'
,
see snmpc.
Martin Björklund
1.7.2 Reported Fixed Bugs and Malfunctions
-
[agent] Failing MIB configure/reconfigure was difficult
to diagnose. Added better error handling and verbosity.
-
[compiler] Added "default value" for INTEGER with enumeration
without a DEFVAL clause.
The lowest valid integer value is choosen for the
variable_info defval.
Own Id: OTP-5124
Aux Id: Seq 8738
-
[compiler] Unnecssarily reserved words in the mib compiler
can cause some enumeration definitions to fail.
Martin Björklund
Own Id: OTP-5066
1.7.3 Incompatibilities
-
New sys configuration format.
Allthough the old configuration format still
works (if only the agent is used), it is no
longer documented and will eventually be
eliminated.
See application configuration or
configuration params for more info.
-
Three new interface modules have been introduced. One
for each of the individual parts of the application:
-
[agent]
snmpa
-
[manager]
snmpm
-
[compiler]
snmpc
The primary interface module, snmp
, still exist.
It contains the application generic functions. The
agent specific stuff still exist (for backward
compatibillity reasons), but has been deprecated and will
eventually be removed.
Some previously already deprecated functions has been
removed (since they in turn was dependent on deprecated
functions, see calendar).
-
[agent] The agent network interface api has changed.
See snmp agent net if,
-
[agent] The default agent audit trail log name has changed.
-
[compiler] Mib format has changed (see OTP-5053 above).
1.8 Release notes history
For information about older versions see
release notes history.
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