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-rw-r--r--lib/snmp/doc/src/snmp_app.xml186
1 files changed, 148 insertions, 38 deletions
diff --git a/lib/snmp/doc/src/snmp_app.xml b/lib/snmp/doc/src/snmp_app.xml
index 62dfa515d1..e5a05342c1 100644
--- a/lib/snmp/doc/src/snmp_app.xml
+++ b/lib/snmp/doc/src/snmp_app.xml
@@ -4,7 +4,7 @@
<appref>
<header>
<copyright>
- <year>1997</year><year>2012</year>
+ <year>1997</year><year>2013</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -311,36 +311,125 @@
<p>Default is <c>[]</c>.</p>
</item>
- <marker id="agent_mib_storage"></marker>
- <tag><c><![CDATA[mib_storage() = ets | {ets, Dir} | {ets, Dir, Action} | dets | {dets, Dir} | {dets, Dir, Action} | mnesia | {mnesia, Nodes} | {mnesia, Nodes, Action} <optional>]]></c></tag>
- <item>
- <p>Specifies how info retrieved from the mibs will be stored.</p>
- <p>If <c>mib_storage</c> is <c>{ets, Dir}</c>, the table will also be
- stored on file. If <c>Dir</c> is <c>default</c>, then <c>db_dir</c>
- will be used.</p>
- <p>If <c>mib_storage</c> is <c>dets</c> or if <c>Dir</c> is
- <c>default</c>, then <c>db_dir</c> will be used for <c>Dir</c>.</p>
- <p>If <c>mib_storage</c> is <c>mnesia</c> then <c>erlang:nodes()</c>
- will be used for <c>Nodes</c>.</p>
- <p>Default is <c>ets</c>. </p>
- <p><c>Dir = default | string()</c>. Dir is the directory where the
- files will be stored. If <c>default</c>, then <c>db_dir</c> will be
- used.</p>
- <p><c>Nodes = visible | connected | [node()]</c>.
- <c>Nodes = visible</c> is translated to
- <c>erlang:nodes(visible)</c>.
- <c>Nodes = connected</c> is translated to
- <c>erlang:nodes(connected)</c>.
- If <c>Nodes = []</c> then the own node is assumed.</p>
- <p><c>Action = clear | keep</c>. Default is <c>keep</c>.
- <c>Action</c> is used to specify what shall be done if the
- mnesia/dets table already exist.</p>
+ <marker id="agent_mib_storage"></marker>
+ <tag><c><![CDATA[mib_storage() = [mib_storage_opt()] <optional>]]></c></tag>
+ <item>
+ <p><c>mib_storage_opt() = {module, mib_storage_module()} | {options, mib_storage_options()}</c></p>
+ <p>This option specifies how basic mib data is stored.
+ This option is used by two parts of the snmp agent:
+ The mib-server and the symbolic-store. </p>
+ <p>Default is <c>[{module, snmpa_mib_storage_ets}]</c>. </p>
+ </item>
+
+ <marker id="agent_mst_module"></marker>
+ <tag><c><![CDATA[mib_storage_module() = snmpa_mib_data_ets | snmpa_mib_data_dets | snmpa_mib_data_mnesia | module()]]></c></tag>
+ <item>
+ <p>Defines the mib storage module of the SNMP agent as defined by the
+ <seealso marker="snmpa_mib_storage">snmpa_mib_storage</seealso>
+ behaviour. </p>
+ <p>Several entities (<c>mib-server</c> via the its data module and
+ the <c>symbolic-store</c>) of the snmp agent uses this for storage
+ of miscelaneous mib related data retrieved while loading a mib. </p>
+ <p>There are several implementations provided with the agent:
+ <c>snmpa_mib_storage_ets</c>, <c>snmpa_mib_storage_dets</c> and
+ <c>snmpa_mib_storage_mnesia</c>. </p>
+ <p>Default module is <c>snmpa_mib_storage_ets</c>. </p>
+ </item>
+
+ <marker id="agent_mst_options"></marker>
+ <tag><c><![CDATA[mib_storage_options() = list() <optional>]]></c></tag>
+ <item>
+ <p>This is implementattion depended. That is, it depends on the
+ module. For each module a specific set of options are valid.
+ For the module provided with the app, these options are supported: </p>
+ <list type="bulleted">
+ <item>
+ <p><c>snmpa_mib_storage_ets</c>: <c>{dir, filename()} | {action, keep | clear}, {checksum, boolean()}</c></p>
+ <list>
+ <item>
+ <p><c>dir</c> - If present, points to a directory where a file
+ to which all data in the ets table is "synced". </p>
+ <p>Also, when a table is opened this file is read,
+ if it exists. </p>
+ <p>By default, this will <em>not</em> be used. </p>
+ </item>
+ <item>
+ <p><c>action</c> - Specifies the behaviour when a non-empty
+ file is found: Keep its content or clear it out. </p>
+ <p>Default is <c>keep</c>. </p>
+ </item>
+ <item>
+ <p><c>checksum</c> - Defines if the file is checksummed
+ or not. </p>
+ <p>Default is <c>false</c>. </p>
+ </item>
+ </list>
+ </item>
+ <item>
+ <p><c>snmpa_mib_storage_dets</c>: <c>{dir, filename()} | {action, keep | clear}, {auto_save, default | pos_integer()} | {repair, force | boolean()}</c></p>
+ <list>
+ <item>
+ <p><c>dir</c> - This <em>mandatory</em> option points to a
+ directory where to place the file of a dets table. </p>
+ </item>
+ <item>
+ <p><c>action</c> - Specifies the behaviour when a non-empty
+ file is found: Keep its content or clear it out. </p>
+ <p>Default is <c>keep</c>. </p>
+ </item>
+ <item>
+ <p><c>auto_save</c> - Defines the dets auto-save frequency. </p>
+ <p>Default is <c>default</c>. </p>
+ </item>
+ <item>
+ <p><c>repair</c> - Defines the dets repair behaviour. </p>
+ <p>Default is <c>false</c>. </p>
+ </item>
+ </list>
+ </item>
+ <item>
+ <p><c>snmpa_mib_storage_mnesia</c>: <c>{action, keep | clear}, {nodes, [node()]}</c></p>
+ <list>
+ <item>
+ <p><c>action</c> - Specifies the behaviour when a non-empty,
+ already existing, table: Keep its content or clear it out. </p>
+ <p>Default is <c>keep</c>. </p>
+ </item>
+ <item>
+ <p><c>nodes</c> - A list of node names (or an atom
+ describing a list of nodes) defining where to open the table.
+ Its up to the user to ensure that mnesia is actually running
+ on the specified nodes. </p>
+ <p>The following distinct values are recognised: </p>
+ <list>
+ <item>
+ <p><c>[]</c> - Translated into a list of the own node: <c>[node()]</c></p>
+ </item>
+ <item>
+ <p><c>all</c> - <c>erlang:nodes()</c></p>
+ </item>
+ <item>
+ <p><c>visible</c> - <c>erlang:nodes(visible)</c></p>
+ </item>
+ <item>
+ <p><c>connected</c> - <c>erlang:nodes(connected)</c></p>
+ </item>
+ <item>
+ <p><c>db_nodes</c> - <c>mnesia:system_info(db_nodes)</c></p>
+ </item>
+ </list>
+
+ <p>Default is the result of the call: <c>erlang:nodes()</c>. </p>
+ </item>
+ </list>
+ </item>
+ </list>
</item>
<marker id="agent_mib_server"></marker>
<tag><c><![CDATA[mib_server() = [mib_server_opt()] <optional>]]></c></tag>
<item>
- <p><c>mib_server_opt() = {mibentry_override, mibentry_override()} | {trapentry_override, trapentry_override()} | {verbosity, verbosity()} | {cache, mibs_cache()}</c></p>
+ <p><c>mib_server_opt() = {mibentry_override, mibentry_override()} | {trapentry_override, trapentry_override()} | {verbosity, verbosity()} | {cache, mibs_cache()} | {data_module, mib_server_data_module()}</c></p>
<p>Defines options specific for the SNMP agent mib server. </p>
<p>For defaults see the options in <c>mib_server_opt()</c>.</p>
</item>
@@ -365,7 +454,28 @@
<p>Default is <c>false</c>.</p>
</item>
- <marker id="agent_ms_cache"></marker>
+ <marker id="agent_ms_data_module"></marker>
+<!--
+ <tag><c><![CDATA[mib_server_data_module() = snmpa_mib_data_tttn | snmpa_mib_data_ttln | module() <optional>]]></c></tag>
+-->
+ <tag><c><![CDATA[mib_server_data_module() = snmpa_mib_data_tttn | module() <optional>]]></c></tag>
+ <item>
+ <p>Defines the backend data module of the SNMP agent mib-server as
+ defined by the
+ <seealso marker="snmpa_mib_data">snmpa_mib_data</seealso>
+ behaviour. </p>
+ <p>At present only the default module is provided with the agent,
+ <c>snmpa_mib_data_tttn</c>. </p>
+<!--
+ <p>Two modules is provided with the agent
+ <c>snmpa_mib_data_tttn</c> (this is the old implementation) and
+ <c>snmpa_mib_data_ttln</c> (for a mib tree with many holes,
+ this algorithm can be more price efficient). </p>
+-->
+ <p>Default module is <c>snmpa_mib_data_tttn</c>. </p>
+ </item>
+
+ <marker id="agent_ms_cache"></marker>
<tag><c><![CDATA[mibs_cache() = bool() | mibs_cache_opts() <optional>]]></c></tag>
<item>
<p>Shall the agent utilize the mib server lookup cache or not.</p>
@@ -385,30 +495,30 @@
<tag><c><![CDATA[mibs_cache_autogc() = bool() <optional>]]></c></tag>
<item>
<p>Defines if the mib server shall perform cache gc automatically or
- leave it to the user (see
- <seealso marker="snmpa#gc_mibs_cache">gc_mibs_cache/0,1,2,3</seealso>). </p>
+ leave it to the user (see
+ <seealso marker="snmpa#gc_mibs_cache">gc_mibs_cache/0,1,2,3</seealso>). </p>
<p>Default is <c>true</c>.</p>
</item>
<marker id="agent_ms_cache_age"></marker>
<tag><c><![CDATA[mibs_cache_age() = integer() > 0 <optional>]]></c></tag>
<item>
- <p>Defines how old the entries in the cache will be allowed before
- they are GC'ed (assuming GC is performed). Each entry in the
- cache is "touched" whenever it is accessed. </p>
- <p>The age is defined in milliseconds. </p>
- <p>Default is <c>10 timutes</c>.</p>
+ <p>Defines how old the entries in the cache will be allowed
+ to become before they are GC'ed (assuming GC is performed).
+ Each entry in the cache is "touched" whenever it is accessed. </p>
+ <p>The age is defined in milliseconds. </p>
+ <p>Default is <c>10 timutes</c>.</p>
</item>
<marker id="agent_ms_cache_gclimit"></marker>
<tag><c><![CDATA[mibs_cache_gclimit() = integer() > 0 | infinity <optional>]]></c></tag>
<item>
<p>When performing a GC, this is the max number of cache entries
- that will be deleted from the cache. </p>
+ that will be deleted from the cache. </p>
<p>The reason for having this limit is that if the cache is
- large, the GC can potentially take a long time, during which
- the agent is locked. </p>
- <p>Default is <c>100</c>.</p>
+ large, the GC can potentially take a long time, during which
+ the agent is locked. </p>
+ <p>Default is <c>100</c>.</p>
</item>
<marker id="agent_error_report_mod"></marker>