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Simple Network Management Protocol (SNMP)
Reference Manual
Version 4.24

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Table of Contents

- snmp
  - Top of manual page
  - config/0
  - start/0
  - start/1
  - start_agent/0
  - start_agent/1
  - start_manager/0
  - start_manager/1
  - date_and_time/0
  - date_and_time_to_universal_time_dst/1
  - date_and_time_to_string/1
  - date_and_time_to_string/2
  - date_and_time_to_string2/1
  - local_time_to_date_and_time_dst/1
  - universal_time_to_date_and_time/1
  - validate_date_and_time/1
  - validate_date_and_time/2
  - passwd2localized_key/3
  - octet_string_to_bits/1
  - bits_to_octet_string/1
  - read_mib/1
  - log_to_txt/5
  - log_to_txt/6
  - log_to_txt/7
  - log_to_io/4
  - log_to_io/5
  - log_to_io/6
  - change_log_size/2
  - print_version_info/0
  - print_version_info/1
  - versions1/0
  - versions2/0
  - print_versions/1
  - print_versions/2
  - enable_trace/0
  - disable_trace/0
  - set_trace/1
  - reset_trace/1
  - set_trace/2
- snmp (App)
- snmpa
  - Top of manual page
  - add_agent_caps/2
  - del_agent_caps/1
  - get_agent_caps/0
  - get/2
  - get/3
  - get_next/2
  - get_next/3
  - backup/1
  - backup/2
  - info/0
  - info/1
  - old_info_format/1
  - load_mibs/1
  - load_mibs/2
  - unload_mibs/1
  - unload_mibs/2
  - which_mibs/0
  - which_mibs/1
  - whereis_mib/1
  - whereis_mib/2
  - current_request_id/0
  - current_context/0
  - current_community/0
  - current_address/0
  - enum_to_int/2
  - enum_to_int/3
  - int_to_enum/2
  - int_to_enum/3
  - name_to_oid/1
  - name_to_oid/2
  - oid_to_name/1
  - oid_to_name/2
  - which_aliasnames/0
  - which_tables/0
  - which_variables/0
  - which_notifications/0
  - log_to_txt/1
  - log_to_txt/2
  - log_to_txt/3
  - log_to_txt/4
  - log_to_txt/5
  - log_to_txt/6
  - log_to_txt/7
  - log_to_io/1
  - log_to_io/2
  - log_to_io/3
  - log_to_io/4
  - log_to_io/5
  - log_to_io/6
  - change_log_size/1
  - set_log_type/1
  - set_log_type/2
  - mib_of/1
  - mib_of/2
  - me_of/1
  - me_of/2
  - invalidate_mibs_cache/0
  - invalidate_mibs_cache/1
  - enable_mibs_cache/0
  - enable_mibs_cache/1
  - disable_mibs_cache/0
  - disable_mibs_cache/1
  - which_mibs_cache_size/0
  - which_mibs_cache_size/1
  - gc_mibs_cache/0
  - gc_mibs_cache/1
  - gc_mibs_cache/1
  - gc_mibs_cache/2
  - gc_mibs_cache/2
  - gc_mibs_cache/3
  - enable_mibs_cache_autogc/0
  - enable_mibs_cache_autogc/1
  - disable_mibs_cache_autogc/0
  - disable_mibs_cache_autogc/1
  - update_mibs_cache_age/1
  - update_mibs_cache_age/2
  - update_mibs_cache_gclimit/1
  - update_mibs_cache_gclimit/2
  - register_notification_filter/3
  - register_notification_filter/4
  - register_notification_filter/4
  - register_notification_filter/5
  - unregister_notification_filter/1
  - unregister_notification_filter/2
  - which_notification_filter/0
  - which_notification_filter/1
  - set_request_limit/1
  - set_request_limit/2
  - register_subagent/3
  - unregister_subagent/2
  - send_notification2/3
  - send_notification/3
  - send_notification/4
  - send_notification/5
  - send_notification/6
  - send_notification/7
  - discovery/2
  - discovery/3
  - discovery/3
  - discovery/4
  - discovery/4
  - discovery/5
  - discovery/6
  - convert_config/1
  - restart_worker/0
  - restart_worker/1
  - restart_set_worker/0
  - restart_set_worker/1
  - print_mib_info/0
  - print_mib_tables/0
  - print_mib_variables/0
  - verbosity/2
- snmpa_conf
  - Top of manual page
  - agent_entry/2
  - write_agent_config/2
  - write_agent_config/3
  - append_agent_config/2
  - read_agent_config/1
  - standard_entry/2
  - write_standard_config/2
  - write_standard_config/3
  - append_standard_config/2
  - read_standard_config/1
  - context_entry/1
  - write_context_config/2
  - write_context_config/3
  - append_context_config/2
  - read_context_config/1
  - community_entry/1
  - community_entry/5
  - write_community_config/2
  - write_community_config/3
  - append_community_config/2
  - read_community_config/1
  - target_addr_entry/5
  - target_addr_entry/6
  - target_addr_entry/8
  - target_addr_entry/10
  - target_addr_entry/11
  - write_target_addr_config/2
  - write_target_addr_config/3
  - append_target_addr_config/2
  - read_target_addr_config/1
  - target_params_entry/2
  - target_params_entry/4
  - target_params_entry/5
  - write_target_params_config/2
  - write_target_params_config/3
  - append_target_params_config/2
  - read_target_params_config/1
  - vacm_s2g_entry/3
  - vacm_acc_entry/8
  - vacm_vtf_entry/2
  - vacm_vtf_entry/4
  - write_vacm_config/2
  - write_vacm_config/3
  - append_vacm_config/2
  - read_vacm_config/1
  - usm_entry/1
  - usm_entry/13
  - write_usm_config/2
  - write_usm_config/3
  - append_usm_config/2
  - read_usm_config/1
  - notify_entry/3
  - write_notify_config/2
  - write_notify_config/3
  - append_notify_config/2
  - read_notify_config/1
- snmpa_discovery_handler
  - Top of manual page
  - stage1_finish/3
- snmpa_error_report
  - Top of manual page
  - config_err/2
  - user_err/2
- snmpa_error
  - Top of manual page
  - config_err/2
  - user_err/2
- snmpa_error_io
  - Top of manual page
  - config_err/2
  - user_err/2
- snmpa_error_logger
  - Top of manual page
  - config_err/2
  - user_err/2
- snmpa_local_db
  - Top of manual page
  - dump/0
  - match/2
  - print/0
  - print/1
  - print/2
  - table_create/1
  - table_create_row/3
  - table_delete/1
  - table_delete_row/2
  - table_exists/1
  - table_get_row/2
- snmpa_mib_data
  - Top of manual page
  - Module:new/1
  - Module:close/1
  - Module:sync/1
  - Module:load_mib/4
  - Module:unload_mib/2
  - Module:lookup/2
  - Module:next/3
  - Module:register_subagent/3
  - Module:unregister_subagent/2
  - Module:dump/2
  - Module:which_mib/2
  - Module:which_mibs/1
  - Module:whereis_mib/2
  - Module:info/1
  - Module:backup/2
  - Module:code_change/4
- snmpa_mib_storage
  - Top of manual page
  - Module:open/5
  - Module:close/1
  - Module:read/2
  - Module:write/2
  - Module:delete/1
  - Module:delete/2
  - Module:match_object/2
  - Module:match_delete/2
  - Module:tab2list/1
  - Module:info/1
  - Module:sync/1
  - Module:backup/2
- snmpa_mpd
  - Top of manual page
  - init/1
  - process_packet/6
  - process_packet/7
  - generate_response_msg/5
  - generate_response_msg/6
  - generate_msg/5
  - generate_msg/6
  - discarded_pdu/1
- snmpa_network_interface
  - Top of manual page
  - start_link/4
  - info/1
  - verbosity/2
  - get_log_type/1
  - set_log_type/2
- snmpa_network_interface_filter
  - Top of manual page
  - accept_recv/2
  - accept_send/2
  - accept_recv_pdu/3
  - accept_send_pdu/2
- snmpa_notification_delivery_info_receiver
  - Top of manual page
  - delivery_targets/3
  - delivery_info/4
- snmpa_notification_filter
  - Top of manual page
  - handle_notification/2
- snmpa_supervisor
  - Top of manual page
  - start_sub_sup/1
  - start_master_sup/1
  - start_sub_agent/3
  - stop_sub_agent/1
- snmp_community_mib
  - Top of manual page
  - configure/1
  - reconfigure/1
  - add_community/5
  - add_community/6
  - delete_community/1
- snmp_framework_mib
  - Top of manual page
  - configure/1
  - init/0
  - add_context/1
  - delete_context/1
- snmp_generic
  - Top of manual page
  - get_status_col/2
  - get_status_col/2
  - get_index_types/1
  - get_table_info/2
  - table_func/2
  - table_func/4
  - table_get_elements/3
  - table_next/2
  - table_row_exists/2
  - table_set_elements/3
  - variable_func/2
  - variable_func/3
  - variable_get/1
  - variable_set/2
- snmp_index
  - Top of manual page
  - delete/1
  - delete/2
  - get/2
  - get_last/1
  - get_next/2
  - insert/3
  - key_to_oid/2
  - new/1
- snmp_notification_mib
  - Top of manual page
  - configure/1
  - reconfigure/1
  - add_notify/3
  - delete_notify/1
- snmp_pdus
  - Top of manual page
  - dec_message/1
  - dec_message_only/1
  - dec_pdu/1
  - dec_scoped_pdu/1
  - dec_scoped_pdu_data/1
  - dec_usm_security_parameters/1
  - enc_encrypted_scoped_pdu/1
  - enc_message/1
  - enc_message_only/1
  - enc_pdu/1
  - enc_scoped_pdu/1
  - enc_usm_security_parameters/1
- snmp_standard_mib
  - Top of manual page
  - configure/1
  - inc/1
  - inc/2
  - reconfigure/1
  - reset/0
  - sys_up_time/0
- snmp_target_mib
  - Top of manual page
  - configure/1
  - reconfigure/1
  - set_target_engine_id/2
  - add_addr/10
  - add_addr/11
  - delete_addr/1
  - add_params/5
  - delete_params/1
- snmp_user_based_sm_mib
  - Top of manual page
  - configure/1
  - reconfigure/1
  - add_user/13
  - delete_user/1
- snmp_view_based_acm_mib
  - Top of manual page
  - configure/1
  - reconfigure/1
  - add_sec2group/3
  - delete_sec2group/1
  - add_access/8
  - delete_access/1
  - add_view_tree_fam/4
  - delete_view_tree_fam/1
- snmpc
  - Top of manual page
  - compile/1
  - compile/2
  - is_consistent/1
  - mib_to_hrl/1
- snmpc(command)
- snmpm
  - Top of manual page
  - monitor/0
  - demonitor/1
  - notify_started/1
  - cancel_notify_started/1
  - register_user/3
  - register_user/4
  - register_user_monitor/3
  - register_user_monitor/4
  - unregister_user/1
  - which_users/0
  - register_agent/3
  - unregister_agent/2
  - agent_info/2
  - update_agent_info/3
  - update_agent_info/4
  - which_agents/0
  - which_agents/1
  - register_usm_user/3
  - unregister_usm_user/2
  - usm_user_info/3
  - update_usm_user_info/4
  - which_usm_users/0
  - which_usm_users/1
  - sync_get2/3
  - sync_get2/4
  - sync_get/3
  - sync_get/4
  - sync_get/4
  - sync_get/5
  - sync_get/6
  - async_get2/3
  - async_get2/4
  - async_get/3
  - async_get/4
  - async_get/4
  - async_get/5
  - async_get/6
  - sync_get_next2/3
  - sync_get_next2/4
  - sync_get_next/3
  - sync_get_next/4
  - sync_get_next/4
  - sync_get_next/5
  - sync_get_next/6
  - async_get_next2/3
  - async_get_next2/4
  - async_get_next/3
  - async_get_next/4
  - async_get_next/4
  - async_get_next/5
  - async_get_next/6
  - sync_set2/3
  - sync_set2/4
  - sync_set/3
  - sync_set/4
  - sync_set/4
  - sync_set/5
  - sync_set/6
  - async_set2/3
  - async_set2/4
  - async_set/3
  - async_set/4
  - async_set/4
  - async_set/5
  - async_set/6
  - sync_get_bulk2/5
  - sync_get_bulk2/6
  - sync_get_bulk/5
  - sync_get_bulk/6
  - sync_get_bulk/6
  - sync_get_bulk/7
  - sync_get_bulk/8
  - async_get_bulk2/5
  - async_get_bulk2/6
  - async_get_bulk/5
  - async_get_bulk/6
  - async_get_bulk/6
  - async_get_bulk/7
  - async_get_bulk/8
  - cancel_async_request/2
  - log_to_txt/2
  - log_to_txt/3
  - log_to_txt/4
  - log_to_txt/5
  - log_to_txt/6
  - log_to_txt/7
  - log_to_io/1
  - log_to_io/2
  - log_to_io/2
  - log_to_io/3
  - log_to_io/4
  - log_to_io/5
  - log_to_io/6
  - change_log_size/1
  - set_log_type/1
  - load_mib/1
  - unload_mib/1
  - which_mibs/0
  - name_to_oid/1
  - oid_to_name/1
  - oid_to_type/1
  - backup/1
  - info/0
  - verbosity/2
  - format_reason/1
  - format_reason/2
- snmpm_conf
  - Top of manual page
  - manager_entry/2
  - write_manager_config/2
  - write_manager_config/3
  - append_manager_config/2
  - read_manager_config/1
  - users_entry/1
  - users_entry/2
  - users_entry/3
  - write_users_config/2
  - write_users_config/3
  - append_users_config/2
  - read_users_config/1
  - agents_entry/12
  - write_agents_config/2
  - write_agents_config/3
  - append_agents_config/2
  - read_agents_config/1
  - usm_entry/6
  - usm_entry/7
  - write_usm_config/2
  - write_usm_config/3
  - append_usm_config/2
  - read_usm_config/1
- snmpm_mpd
  - Top of manual page
  - init_mpd/1
  - process_msg/7
  - generate_msg/5
  - generate_response_msg/4
- snmpm_network_interface
  - Top of manual page
  - start_link/2
  - stop/1
  - send_pdu/7
  - inform_response/4
  - note_store/2
  - info/1
  - verbosity/2
  - get_log_type/1
  - set_log_type/2
- snmpm_user
  - Top of manual page
  - handle_error/3
  - handle_agent/5
  - handle_pdu/4
  - handle_trap/3
  - handle_inform/3
  - handle_report/3
- snmpm_network_interface_filter
  - Top of manual page
  - accept_recv/2
  - accept_send/2
  - accept_recv_pdu/3
  - accept_send_pdu/3

# snmpa_mib_storage

### MODULE

snmpa_mib_storage

### MODULE SUMMARY

Behaviour module for the SNMP agent mib storage.

### DESCRIPTION

This module defines the behaviour of the SNMP agent mib storage.

The mib storage is used by the agent to store internal mib- related information. The mib storage module is used by several entities, not just the mib-server.

A snmpa_mib_storage compliant module must export the following functions:

- open/5
- close/1
- read/2
- write/2
- delete/1
- delete/2
- match_object/2
- match_delete/2
- tab2list/1
- info/1
- sync/1
- backup/2

The semantics of them and their exact signatures are explained below.

### CALLBACK FUNCTIONS

The following functions must be exported from a mib-server data callback module:

### EXPORTS

Module:open(Name, RecordName, Fields, Type, Options) -> {ok, TabId} | {error, Reason}

Types:

Name = atom()
RecordName = atom()
Fields = [atom()]
Type = set | bag()
Options = list()
TabId = term()
Reason = term()

Create or open a mib storage table.

Note that the RecordName and Fields arguments my not be used in all implementations (they are actually only needed for mnesia-based implementations).

Note also that the Options argument comes from the options config option of the mib-storage config option, and is passed on as is.

Module:close(TabId) -> void()

Types:

State = term()

Close the mib-storage table.

Module:read(TabId, Key) -> false | {value, Record}

Types:

TabId = term()
Key = term()
Record = tuple()

Read a record from the mib-storage table.

Module:write(TabId, Record) -> ok | {error, Reason}

Types:

TabId = term()
Record = tuple()
Reason = term()

Write a record to the mib-storage table.

Module:delete(TabId) -> void()

Types:

TabId = term()

Delete an entire mib-storage table.

Module:delete(TabId, Key) -> ok | {error, Reason}

Types:

TabId = term()
Key = term()
Reason = term()

Delete a record from the mib-storage table.

Module:match_object(TabId, Pattern) -> {ok, Recs} | {error, Reason}

Types:

TabId = term()
Pattern = match_pattern()
Recs = [tuple()]
Reason = term()

Search the mib-storage table for record that match the specified pattern.

Module:match_delete(TabId, Pattern) -> {ok, Recs} | {error, Reason}

Types:

TabId = term()
Pattern = match_pattern()
Recs = [tuple()]
Reason = term()

Search the mib-storage table for record that match the specified pattern and then delete them. The records deleted are also returned.

Module:tab2list(TabId) -> Recs

Types:

TabId = term()
Recs = [tuple()]

Return all records in the mib-storage table in the form of a list.

Module:info(TabId) -> {ok, Info} | {error, Reason}

Types:

TabId = term()
Info = term()
Reason = term()

Retrieve implementation dependent mib-storage table information.

Module:sync(TabId) -> void()

Types:

TabId = term()

Synchronize the mib-storage table.

What this means, if anything, is implementation dependent.

Module:backup(TabId, BackupDir) -> ok | {error, Reason}

Types:

TabId = term()
BackupDir = string()
Reason = term()

Perform a backup of the mib-storage table.

What this means, if anything, is implementation dependent.