1SNMP(7) Erlang Application Definition SNMP(7)
2
6 SNMP - The SNMP Application
7
9 This chapter describes the snmp application in OTP. The SNMP applica‐
10 tion provides the following services:
11 * a multilingual extensible SNMP agent
13 * a SNMP manager
15 * a MIB compiler
17
19 The following configuration parameters are defined for the SNMP appli‐
20 cation. Refer to application(3) for more information about configura‐
21 tion parameters.
22 The snmp part of the config file specifying the configuration parame‐
24 ters is basically the following tuple:
25 {snmp, snmp_components_config()}
27 A minimal config file for starting a node with both a manager and an
30 agent:
31 [{snmp,
33 [{agent, [{db_dir, "/tmp/snmp/agent/db"},
34 {config, [{dir, "/tmp/snmp/agent/conf"}]}]},
35 {manager, [{config, [{dir, "/tmp/snmp/manager/conf"},
36 {db_dir, "/tmp/snmp/manager/db"}]}]}]}
37 ]
38 }
39 ].
40 Each snmp component has its own set of configuration parameters, even
43 though some of the types are common to both components.
44 snmp_components_config() -> [snmp_component_config()]
46 snmp_component_config() -> {agent, agent_options()} | {manager, manager_options()}
47 agent_options() = [agent_option()]
48 agent_option() = {restart_type, restart_type()} |
49 {agent_type, agent_type()} |
50 {agent_verbosity, verbosity()} |
51 {discovery, agent_discovery()} |
52 {versions, versions()} |
53 {gb_max_vbs, gb_max_vbs()} |
54 {priority, priority()} |
55 {multi_threaded, multi_threaded()} |
56 {db_dir, db_dir()} |
57 {db_init_error, db_init_error()} |
58 {local_db, local_db()} |
59 {net_if, agent_net_if()} |
60 {mibs, mibs()} |
61 {mib_storage, mib_storage()} |
62 {mib_server, mib_server()} |
63 {audit_trail_log, audit_trail_log()} |
64 {error_report_mod, error_report_mod()} |
65 {note_store, note_store()} |
66 {symbolic_store, symbolic_store()} |
67 {target_cache, target_cache()} |
68 {config, agent_config()}
69 manager_options() = [manager_option()]
70 manager_option() = {restart_type, restart_type()} |
71 {net_if, manager_net_if()} |
72 {server, server()} |
73 {note_store, note_store()} |
74 {config, manager_config()} |
75 {inform_request_behaviour, manager_irb()} |
76 {mibs, manager_mibs()} |
77 {priority, priority()} |
78 {audit_trail_log, audit_trail_log()} |
79 {versions, versions()} |
80 {def_user_mod, def_user_module() |
81 {def_user_data, def_user_data()}
82 Agent specific config options and types:
85 agent_type() = master | sub <optional>:
87 If master, one master agent is started. Otherwise, no agents are
88 started.
89 Default is master.
91 agent_discovery() = [agent_discovery_opt()] <optional>:
93 agent_discovery_opt() = {terminating, agent_terminating_discov‐
94 ery_opts()} | {originating, agent_originating_discovery_opts()}
95 The terminating options effects discovery initiated by a manager.
97 The originating options effects discovery initiated by this agent.
99 For defaults see the options in agent_discovery_opt().
101 agent_terminating_discovery_opts() = [agent_terminating_discov‐
103 ery_opt()] <optional>:
104 agent_terminating_discovery_opt() = {enable, boolean()} | {stage2,
105 discovery | plain} | {trigger_username, string()}
106 These are options effecting discovery terminating in this agent
108 (i.e. initiated by a manager).
109 The default values for the terminating discovery options are:
111 * enable: true
113 * stage2: discovery
115 * trigger_username: ""
117 agent_originating_discovery_opts() = [agent_originating_discov‐
119 ery_opt()] <optional>:
120 agent_originating_discovery_opt() = {enable, boolean()}
121 These are options effecting discovery originating in this agent.
123 The default values for the originating discovery options are:
125 * enable: true
127 multi_threaded() = bool() | extended <optional>:
129 If true (or extended), the agent is multi-threaded, with one thread
130 for each get request.
131 The value extended means that a special 'process' is also created
133 intended to handle all notifications.
134 * true - One worker dedicated to 'set-requests' and one (main)
136 worker for all other requests ('get-request' and notifications).
137 If the 'main' worker is busy, a temporary process is spawned to
139 handle that job ('get-request' or notification).
140 * extended - One worker dedicated to 'set-requests', one worker
142 dedicated to notifications and one (main) worker for all 'get-re‐
143 quests'.
144 If the 'main' worker is busy, a temporary process is spawned to
146 handle that 'get-request'.
147 Note:
149 Even with multi-threaded set to extended there is still a risk for
150 'reorder' when sending inform-requsts, which require a response (and
151 may therefore require resending).
152 Also, there is of course no way to guarantee order once the package
154 is on the network.
155 Default is false.
158 db_dir() = string() <mandatory>:
160 Defines where the SNMP agent internal db files are stored.
161 gb_max_vbs() = pos_integer() | infinity <optional>:
163 Defines the maximum number of varbinds allowed in a Get-BULK re‐
164 sponse.
165 Default is 1000.
167 local_db() = [local_db_opt()] <optional>:
169 local_db_opt() = {repair, agent_repair()} | {auto_save,
170 agent_auto_save()} | {verbosity, verbosity()}
171 Defines options specific for the SNMP agent local database.
173 For defaults see the options in local_db_opt().
175 agent_repair() = false | true | force <optional>:
177 When starting snmpa_local_db it always tries to open an existing
178 database. If false, and some errors occur, a new database is cre‐
179 ated instead. If true, an existing file will be repaired. If force,
180 the table will be repaired even if it was properly closed.
181 Default is true.
183 agent_auto_save() = integer() | infinity <optional>:
185 The auto save interval. The table is flushed to disk whenever not
186 accessed for this amount of time.
187 Default is 5000.
189 agent_net_if() = [agent_net_if_opt()] <optional>:
191 agent_net_if_opt() = {module, agent_net_if_module()} | {verbosity,
192 verbosity()} | {options, agent_net_if_options()}
193 Defines options specific for the SNMP agent network interface en‐
195 tity.
196 For defaults see the options in agent_net_if_opt().
198 agent_net_if_module() = atom() <optional>:
200 Module which handles the network interface part for the SNMP agent.
201 Must implement the snmpa_network_interface behaviour.
202 Default is snmpa_net_if.
204 agent_net_if_options() = [agent_net_if_option()] <optional>:
206 agent_net_if_option() = {bind_to, bind_to()} | {sndbuf, sndbuf()} |
207 {recbuf, recbuf()} | {no_reuse, no_reuse()} | {req_limit,
208 req_limit()} | {filter, agent_net_if_filter_options()} | {ex‐
209 tra_sock_opts, extra_socket_options()} | {inet_backend, inet |
210 socket}
211 These options are actually specific to the used module. The ones
213 shown here are applicable to the default agent_net_if_module().
214 Note:
216 If the user has configured transports with options then those will
217 take precedence over these options. See agent information for more
218 info.
219 For defaults see the options in agent_net_if_option().
222 req_limit() = integer() | infinity <optional>:
224 Max number of simultaneous requests handled by the agent.
225 Default is infinity.
227 agent_net_if_filter_options() = [agent_net_if_filter_option()] <op‐
229 tional>:
230 agent_net_if_filter_option() = {module, agent_net_if_filter_mod‐
231 ule()}
232 These options are actually specific to the used module. The ones
234 shown here are applicable to the default agent_net_if_filter_mod‐
235 ule().
236 For defaults see the options in agent_net_if_filter_option().
238 agent_net_if_filter_module() = atom() <optional>:
240 Module which handles the network interface filter part for the SNMP
241 agent. Must implement the snmpa_network_interface_filter behaviour.
242 Default is snmpa_net_if_filter.
244 agent_mibs() = [string()] <optional>:
246 Specifies a list of MIBs (including path) that defines which MIBs
247 are initially loaded into the SNMP master agent.
248 Note that the following mibs will always be loaded:
250 * version v1: STANDARD-MIB
252 * version v2: SNMPv2
254 * version v3: SNMPv2, SNMP-FRAMEWORK-MIB and SNMP-MPD-MIB
256 Default is [].
258 mib_storage() = [mib_storage_opt()] <optional>:
260 mib_storage_opt() = {module, mib_storage_module()} | {options,
261 mib_storage_options()}
262 This option specifies how basic mib data is stored. This option is
264 used by two parts of the snmp agent: The mib-server and the sym‐
265 bolic-store.
266 Default is [{module, snmpa_mib_storage_ets}].
268 mib_storage_module() = snmpa_mib_data_ets | snmpa_mib_data_dets | sn‐
270 mpa_mib_data_mnesia | module():
271 Defines the mib storage module of the SNMP agent as defined by the
272 snmpa_mib_storage behaviour.
273 Several entities (mib-server via the its data module and the sym‐
275 bolic-store) of the snmp agent uses this for storage of miscella‐
276 neous mib related data retrieved while loading a mib.
277 There are several implementations provided with the agent: sn‐
279 mpa_mib_storage_ets, snmpa_mib_storage_dets and snmpa_mib_stor‐
280 age_mnesia.
281 Default module is snmpa_mib_storage_ets.
283 mib_storage_options() = list() <optional>:
285 This is implementation depended. That is, it depends on the module.
286 For each module a specific set of options are valid. For the module
287 provided with the app, these options are supported:
288 * snmpa_mib_storage_ets: {dir, filename()} | {action, keep |
290 clear}, {checksum, boolean()}
291 * dir - If present, points to a directory where a file to which
293 all data in the ets table is "synced".
294 Also, when a table is opened this file is read, if it exists.
296 By default, this will not be used.
298 * action - Specifies the behaviour when a non-empty file is
300 found: Keep its content or clear it out.
301 Default is keep.
303 * checksum - Defines if the file is checksummed or not.
305 Default is false.
307 * snmpa_mib_storage_dets: {dir, filename()} | {action, keep |
309 clear}, {auto_save, default | pos_integer()} | {repair, force |
310 boolean()}
311 * dir - This mandatory option points to a directory where to
313 place the file of a dets table.
314 * action - Specifies the behaviour when a non-empty file is
316 found: Keep its content or clear it out.
317 Default is keep.
319 * auto_save - Defines the dets auto-save frequency.
321 Default is default.
323 * repair - Defines the dets repair behaviour.
325 Default is false.
327 * snmpa_mib_storage_mnesia: {action, keep | clear}, {nodes,
329 [node()]}
330 * action - Specifies the behaviour when a non-empty, already ex‐
332 isting, table: Keep its content or clear it out.
333 Default is keep.
335 * nodes - A list of node names (or an atom describing a list of
337 nodes) defining where to open the table. Its up to the user to
338 ensure that mnesia is actually running on the specified nodes.
339 The following distinct values are recognised:
341 * [] - Translated into a list of the own node: [node()]
343 * all - erlang:nodes()
345 * visible - erlang:nodes(visible)
347 * connected - erlang:nodes(connected)
349 * db_nodes - mnesia:system_info(db_nodes)
351 Default is the result of the call: erlang:nodes().
353 mib_server() = [mib_server_opt()] <optional>:
355 mib_server_opt() = {mibentry_override, mibentry_override()} |
356 {trapentry_override, trapentry_override()} | {verbosity, ver‐
357 bosity()} | {cache, mibs_cache()} | {data_module,
358 mib_server_data_module()}
359 Defines options specific for the SNMP agent mib server.
361 For defaults see the options in mib_server_opt().
363 mibentry_override() = bool() <optional>:
365 If this value is false, then when loading a mib each mib- entry is
366 checked prior to installation of the mib. The purpose of the check
367 is to prevent that the same symbolic mibentry name is used for dif‐
368 ferent oid's.
369 Default is false.
371 trapentry_override() = bool() <optional>:
373 If this value is false, then when loading a mib each trap is
374 checked prior to installation of the mib. The purpose of the check
375 is to prevent that the same symbolic trap name is used for differ‐
376 ent trap's.
377 Default is false.
379 mib_server_data_module() = snmpa_mib_data_tttn | module() <optional>:
381 Defines the backend data module of the SNMP agent mib-server as de‐
382 fined by the snmpa_mib_data behaviour.
383 At present only the default module is provided with the agent, sn‐
385 mpa_mib_data_tttn.
386 Default module is snmpa_mib_data_tttn.
388 mibs_cache() = bool() | mibs_cache_opts() <optional>:
390 Shall the agent utilize the mib server lookup cache or not.
391 Default is true (in which case the mibs_cache_opts() default values
393 apply).
394 mibs_cache_opts() = [mibs_cache_opt()] <optional>:
396 mibs_cache_opt() = {autogc, mibs_cache_autogc()} | {gclimit,
397 mibs_cache_gclimit()} | {age, mibs_cache_age()}
398 Defines options specific for the SNMP agent mib server cache.
400 For defaults see the options in mibs_cache_opt().
402 mibs_cache_autogc() = bool() <optional>:
404 Defines if the mib server shall perform cache gc automatically or
405 leave it to the user (see gc_mibs_cache/0,1,2,3).
406 Default is true.
408 mibs_cache_age() = integer() > 0 <optional>:
410 Defines how old the entries in the cache will be allowed to become
411 before they are GC'ed (assuming GC is performed). Each entry in the
412 cache is "touched" whenever it is accessed.
413 The age is defined in milliseconds.
415 Default is 10 timutes.
417 mibs_cache_gclimit() = infinity | integer() > 0 <optional>:
419 When performing a GC, this is the max number of cache entries that
420 will be deleted from the cache.
421 The reason why its possible to set a limit, is that if the cache is
423 large, the GC can potentially take a long time, during which the
424 agent is "busy". But on a heavily loaded system, we also risk not
425 removing enough elements in the cache, instead causing it to grow
426 over time. This is the reason the default value is infinity, which
427 will ensure that all candidates are removed as soon as possible.
428 Default is infinity.
430 error_report_mod() = atom() <optional>:
432 Defines an error report module, implementing the snmpa_error_report
433 behaviour. Two modules are provided with the toolkit: snmpa_er‐
434 ror_logger and snmpa_error_io.
435 Default is snmpa_error_logger.
437 symbolic_store() = [symbolic_store_opt()]:
439 symbolic_store_opt() = {verbosity, verbosity()}
440 Defines options specific for the SNMP agent symbolic store.
442 For defaults see the options in symbolic_store_opt().
444 target_cache() = [target_cache_opt()]:
446 target_cache_opt() = {verbosity, verbosity()}
447 Defines options specific for the SNMP agent target cache.
449 For defaults see the options in target_cache_opt().
451 agent_config() = [agent_config_opt()] <mandatory>:
453 agent_config_opt() = {dir, agent_config_dir()} | {force_load,
454 force_load()} | {verbosity, verbosity()}
455 Defines specific config related options for the SNMP agent.
457 For defaults see the options in agent_config_opt().
459 agent_config_dir = dir() <mandatory>:
461 Defines where the SNMP agent configuration files are stored.
462 force_load() = bool() <optional>:
464 If true the configuration files are re-read during start-up, and
465 the contents of the configuration database ignored. Thus, if true,
466 changes to the configuration database are lost upon reboot of the
467 agent.
468 Default is false.
470 Manager specific config options and types:
472 server() = [server_opt()] <optional>:
474 server_opt() = {timeout, server_timeout()} | {verbosity, ver‐
475 bosity()} | {cbproxy, server_cbproxy()} | {netif_sup, server_nis()}
476 Specifies the options for the manager server process.
478 Default is silence.
480 server_timeout() = integer() <optional>:
482 Asynchronous request cleanup time. For every requests, some info is
483 stored internally, in order to be able to deliver the reply (when
484 it arrives) to the proper destination. If the reply arrives, this
485 info will be deleted. But if there is no reply (in time), the info
486 has to be deleted after the best before time has been passed. This
487 cleanup will be performed at regular intervals, defined by the
488 server_timeout() time. The information will have an best before
489 time, defined by the Expire time given when calling the request
490 function (see async_get, async_get_next and async_set).
491 Time in milli-seconds.
493 Default is 30000.
495 server_cbproxy() = temporary (default) | permanent <optional>:
497 This option specifies how the server will handle callback calls.
498 temporary (default):
500 A temporary process will be created for each callback call.
501 permanent:
503 With this the server will create a permanent (named) process that
504 in effect serializes all callback calls.
505 Default is temporary.
507 server_nis() = none (default) | {PingTO, PongTO} <optional>:
509 This option specifies if the server should actively supervise the
510 net-if process. Note that this will only work if the used net-if
511 process actually supports the protocol. See snmpm_network_interface
512 behaviour for more info.
513 none (default):
515 No active supervision of the net-if process.
516 {PingTO :: pos_integer(), PongTO :: pos_integer()}:
518 The PingTO time specifies the between a successful ping (or
519 start) and the time when a ping message is to be sent to the net-
520 if process (basically the time between ping).
521 The PongTO time specifies how long time the net-if process has to
523 respond to a ping message, with a pong message. Its starts count‐
524 ing when the ping message has been sent.
525 Both times are in milli seconds.
527 Default is none.
529 manager_config() = [manager_config_opt()] <mandatory>:
531 manager_config_opt() = {dir, manager_config_dir()} | {db_dir, man‐
532 ager_db_dir()} | {db_init_error, db_init_error()} | {repair, man‐
533 ager_repair()} | {auto_save, manager_auto_save()} | {verbosity,
534 verbosity()}
535 Defines specific config related options for the SNMP manager.
537 For defaults see the options in manager_config_opt().
539 manager_config_dir = dir() <mandatory>:
541 Defines where the SNMP manager configuration files are stored.
542 manager_db_dir = dir() <mandatory>:
544 Defines where the SNMP manager store persistent data.
545 manager_repair() = false | true | force <optional>:
547 Defines the repair option for the persistent database (if and how
548 the table is repaired when opened).
549 Default is true.
551 manager_auto_save() = integer() | infinity <optional>:
553 The auto save interval. The table is flushed to disk whenever not
554 accessed for this amount of time.
555 Default is 5000.
557 manager_irb() = auto | user | {user, integer()} <optional>:
559 This option defines how the manager will handle the sending of re‐
560 sponse (acknowledgment) to received inform-requests.
561 * auto - The manager will autonomously send response (acknowledg‐
563 ment> to inform-request messages.
564 * {user, integer()} - The manager will send response (acknowledg‐
566 ment) to inform-request messages when the handle_inform function
567 completes. The integer is the time, in milli-seconds, that the
568 manager will consider the stored inform-request info valid.
569 * user - Same as {user, integer()}, except that the default time,
571 15 seconds (15000), is used.
572 See snmpm_network_interface, handle_inform and definition of the
574 manager net if for more info.
575 Default is auto.
577 manager_mibs() = [string()] <optional>:
579 Specifies a list of MIBs (including path) and defines which MIBs
580 are initially loaded into the SNMP manager.
581 Default is [].
583 manager_net_if() = [manager_net_if_opt()] <optional>:
585 manager_net_if_opt() = {module, manager_net_if_module()} | {ver‐
586 bosity, verbosity()} | {options, manager_net_if_options()}
587 Defines options specific for the SNMP manager network interface en‐
589 tity.
590 For defaults see the options in manager_net_if_opt().
592 manager_net_if_options() = [manager_net_if_option()] <optional>:
594 manager_net_if_option() = {bind_to, bind_to()} | {sndbuf, sndbuf()}
595 | {recbuf, recbuf()} | {no_reuse, no_reuse()} | {filter, man‐
596 ager_net_if_filter_options()} | {extra_sock_opts, extra_socket_op‐
597 tions()} | {inet_backend, inet | socket}
598 These options are actually specific to the used module. The ones
600 shown here are applicable to the default manager_net_if_module().
601 For defaults see the options in manager_net_if_option().
603 manager_net_if_module() = atom() <optional>:
605 The module which handles the network interface part for the SNMP
606 manager. It must implement the snmpm_network_interface behaviour.
607 Default is snmpm_net_if.
609 manager_net_if_filter_options() = [manager_net_if_filter_option()]
611 <optional>:
612 manager_net_if_filter_option() = {module, manager_net_if_fil‐
613 ter_module()}
614 These options are actually specific to the used module. The ones
616 shown here are applicable to the default manager_net_if_filter_mod‐
617 ule().
618 For defaults see the options in manager_net_if_filter_option().
620 manager_net_if_filter_module() = atom() <optional>:
622 Module which handles the network interface filter part for the SNMP
623 manager. Must implement the snmpm_network_interface_filter behav‐
624 iour.
625 Default is snmpm_net_if_filter.
627 def_user_module() = atom() <optional>:
629 The module implementing the default user. See the snmpm_user behav‐
630 iour.
631 Default is snmpm_user_default.
633 def_user_data() = term() <optional>:
635 Data for the default user. Passed to the user module when calling
636 the callback functions.
637 Default is undefined.
639 Common config types:
641 restart_type() = permanent | transient | temporary:
643 See supervisor documentation for more info.
644 Default is permanent for the agent and transient for the manager.
646 db_init_error() = terminate | create | create_db_and_dir:
648 Defines what to do if the agent or manager is unable to open an ex‐
649 isting database file. terminate means that the agent/manager will
650 terminate and create means that the agent/manager will remove the
651 faulty file(s) and create new ones, and create_db_and_dir means
652 that the agent/manager will create the database file along with any
653 missing parent directories for the database file.
654 Default is terminate.
656 priority() = atom() <optional>:
658 Defines the Erlang priority for all SNMP processes.
659 Default is normal.
661 versions() = [version()] <optional>:
663 version() = v1 | v2 | v3
664 Which SNMP versions shall be accepted/used.
666 Default is [v1,v2,v3].
668 verbosity() = silence | info | log | debug | trace <optional>:
670 Verbosity for a SNMP process. This specifies now much debug info is
671 printed.
672 Default is silence.
674 bind_to() = bool() <optional>:
676 If true, net_if binds to the IP address. If false, net_if listens
677 on any IP address on the host where it is running.
678 Default is false.
680 no_reuse() = bool() <optional>:
682 If true, net_if does not specify that the IP and port address
683 should be reusable. If false, the address is set to reusable.
684 Default is false.
686 recbuf() = integer() <optional>:
688 Receive buffer size.
689 Default value is defined by gen_udp.
691 sndbuf() = integer() <optional>:
693 Send buffer size.
694 Default value is defined by gen_udp.
696 extra_socket_options() = list() <optional>:
698 A list of arbitrary socket options.
699 This list is not inspected by snmp (other then checking that its a
701 list). Its the users responsibility to ensure that these are valid
702 options and does not conflict with the "normal" options.
703 Default is [].
705 note_store() = [note_store_opt()] <optional>:
707 note_store_opt() = {timeout, note_store_timeout()} | {verbosity,
708 verbosity()}
709 Specifies the start-up verbosity for the SNMP note store.
711 For defaults see the options in note_store_opt().
713 note_store_timeout() = integer() <optional>:
715 Note cleanup time. When storing a note in the note store, each note
716 is given lifetime. Every timeout the note_store process performs a
717 GC to remove the expired note's. Time in milli-seconds.
718 Default is 30000.
720 audit_trail_log() = [audit_trail_log_opt()] <optional>:
722 audit_trail_log_opt() = {type, atl_type()} | {dir, atl_dir()} |
723 {size, atl_size()} | {repair, atl_repair()} | {seqno, atl_seqno()}
724 If present, this option specifies the options for the audit trail
726 logging. The disk_log module is used to maintain a wrap log. If
727 present, the dir and size options are mandatory.
728 If not present, audit trail logging is not used.
730 atl_type() = read | write | read_write <optional>:
732 Specifies what type of an audit trail log should be used. The ef‐
733 fect of the type is actually different for the the agent and the
734 manager.
735 For the agent:
737 * If write is specified, only set requests are logged.
739 * If read is specified, only get requests are logged.
741 * If read_write, all requests are logged.
743 For the manager:
745 * If write is specified, only sent messages are logged.
747 * If read is specified, only received messages are logged.
749 * If read_write, both outgoing and incoming messages are logged.
751 Default is read_write.
753 atl_dir = dir() <mandatory>:
755 Specifies where the audit trail log should be stored.
756 If audit_trail_log specifies that logging should take place, this
758 parameter must be defined.
759 atl_size() = {integer(), integer()} <mandatory>:
761 Specifies the size of the audit trail log. This parameter is sent
762 to disk_log.
763 If audit_trail_log specifies that logging should take place, this
765 parameter must be defined.
766 atl_repair() = true | false | truncate | snmp_repair <optional>:
768 Specifies if and how the audit trail log shall be repaired when
769 opened. Unless this parameter has the value snmp_repair it is sent
770 to disk_log. If, on the other hand, the value is snmp_repair, snmp
771 attempts to handle certain faults on its own. And even if it cannot
772 repair the file, it does not truncate it directly, but instead
773 moves it aside for later off-line analysis.
774 Default is true.
776 atl_seqno() = true | false <optional>:
778 Specifies if the audit trail log entries will be (sequence) num‐
779 bered or not. The range of the sequence numbers are according to
780 RFC 5424, i.e. 1 through 2147483647.
781 Default is false.
783
785 application(3), disk_log(3)
786Ericsson AB snmp 5.13.3 SNMP(7)