SNMP::Simple(3pm)

1SNMP::Simple(3)       User Contributed Perl Documentation      SNMP::Simple(3)
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NAME

6       SNMP::Simple - shortcuts for when using SNMP
7

SYNOPSIS

9           use SNMP::Simple;
10
11           $name     = $s->get('sysName');       # same as sysName.0
12           $location = $s->get('sysLocation');
13
14           @array    = $s->get_list('hrPrinterStatus');
15           $arrayref = $s->get_list('hrPrinterStatus');
16
17           @list_of_lists = $s->get_table(
18               qw(
19                   prtConsoleOnTime
20                   prtConsoleColor
21                   prtConsoleDescription
22                   )
23           );
24
25           @list_of_hashes = $s->get_named_table(
26               name   => 'prtInputDescription',
27               media  => 'prtInputMediaName',
28               status => 'prtInputStatus',
29               level  => 'prtInputCurrentLevel',
30               max    => 'prtInputMaxCapacity',
31           );
32

DESCRIPTION

34       This module provides shortcuts when performing repetitive information-
35       retrieval tasks with SNMP.
36
37       Instead of this:
38
39           use SNMP;
40           $vars = new SNMP::VarList( ['prtConsoleOnTime'], ['prtConsoleColor'],
41               ['prtConsoleDescription'], );
42           my ( $light_status, $light_color, $light_desc ) = $s->getnext($vars);
43           die $s->{ErrorStr} if $s->{ErrorStr};
44           while ( !$s->{ErrorStr} and $$vars[0]->tag eq "prtConsoleOnTime" ) {
45               push @{ $data{lights} },
46                   {
47                   status => ( $light_status ? 0 : 1 ),
48                   color       => SNMP::mapEnum( $$vars[1]->tag, $light_color ),
49                   description => $light_desc,
50                   };
51               ( $light_status, $light_color, $light_desc ) = $s->getnext($vars);
52           }
53
54       ...you can do this:
55
56           use SNMP::Simple;
57           $data{lights} = $s->get_named_table(
58               status => 'prtConsoleOnTime',
59               color  => 'prtConsoleColor',
60               name   => 'prtConsoleDescription',
61           );
62
63   SNMP Beginners, read me first!
64       Please, please, please do not use this module as a starting point for
65       working with SNMP and Perl. Look elsewhere for starting resources:
66
67       ·   The SNMP module
68
69       ·   The Net-SNMP web site (<http://www.net-snmp.org/>) and tutorial
70           (<http://www.net-snmp.org/tutorial-5/>)
71
72       ·   Appendix E of Perl for System Administration
73           (<http://www.amazon.com/exec/obidos/tg/detail/-/1565926099>) by
74           David N. Blank-Edelman
75
76   SNMP Advanced and Intermediate users, read me first!
77       I'll admit this is a complete slaughtering of SNMP, but my goals were
78       precise.  If you think SNMP::Simple could be refined in any way, feel
79       free to send me suggestions/fixes/patches.
80

METHODS

82   new( @args )
83       Creates a new SNMP::Simple object. Arguments given are passed directly
84       to "SNMP::Session->new". See "SNMP::Session" in SNMP for details.
85
86       Example:
87
88           use SNMP::Simple
89
90           my $s = SNMP::Simple->new(
91               DestHost  => 'host.example.com',
92               Community => 'public',
93               Version   => 1,
94           ) or die "couldn't create session";
95
96           ...
97
98   get( $oid )
99       Gets the named variable and returns its value. If no value is returned,
100       "get()" will try to retrieve a list named $name and return its first
101       vlaue.  Thus, for convenience,
102
103           $s->get('sysDescr')
104
105       ..should be the same as:
106
107           $s->get('sysDescr.0')
108
109       Numbered OIDs are fine, too, with or without a leading dot:
110
111           $s->get('1.3.6.1.2.1.1.1.0')
112
113       "SNMP::mapEnum()" is automatically used on the result.
114
115   get_list( $oid )
116       Returns leaves of the given OID.
117
118       If called in array context, returns an array. If called in scalar
119       context, returns an array reference.
120
121   get_table( @oids )
122       Given a list of OIDs, this will return a list of lists of all of the
123       values of the table.
124
125       For example, to get a list of all known network interfaces on a machine
126       and their status:
127
128           $s->get_table('ifDescr', 'ifOperStatus')
129
130       Would return something like the following:
131
132           [ 'lo',   'up'   ],
133           [ 'eth0', 'down' ],
134           [ 'eth1', 'up'   ],
135           [ 'sit0', 'down' ]
136
137       If called in array context, returns an array (of arrays). If called in
138       scalar context, returns an array reference.
139
140   get_named_table( %oids_by_alias )
141       Like "get_table", but lets you rename ugly OID names on the fly.  To
142       get a list of all known network interfaces on a machine and their
143       status:
144
145           $s->get_table( name => 'ifDescr', status => 'ifOperStatus' )
146
147       Would return something like the following:
148
149               {
150                   status => 'up',
151                   name   => 'lo'
152               },
153               {
154                   status => 'down',
155                   name   => 'eth0'
156               },
157               {
158                   status => 'up',
159                   name   => 'eth1'
160               },
161               {
162                   status => 'down',
163                   name   => 'sit0'
164               }
165
166       If called in array context, returns an array (of hashes). If called in
167       scalar context, returns an array reference.
168

EXAMPLES

170       A sample script examples/printerstats.pl is included with this
171       distribution.
172

AUTHOR

177       Ian Langworth, "<ian@cpan.org>"
178

BUGS

180       ·   There are no real tests.
181
182       ·   I haven't tested this with v3.
183
184       Please report any bugs or feature requests to
185       "bug-snmp-simple@rt.cpan.org", or through the web interface at
186       <http://rt.cpan.org>.  I will be notified, and then you'll
187       automatically be notified of progress on your bug as I make changes.
188

COPYRIGHT & LICENSE

190       Copyright 2005 Ian Langworth, All Rights Reserved.
191
192       This program is free software; you can redistribute it and/or modify it
193       under the same terms as Perl itself.
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197perl v5.30.0                      2019-07-26                   SNMP::Simple(3)