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#! /bin/env perl
# ============================================================================
# $Id: table.pl,v 6.0 2009/09/09 15:05:33 dtown Rel $
# Copyright (c) 2000-2009 David M. Town <dtown@cpan.org>
# All rights reserved.
# This program is free software; you may redistribute it and/or modify it
# under the same terms as the Perl 5 programming language system itself.
# ============================================================================
use strict;
use warnings;
use Net::SNMP qw( snmp_dispatcher SNMP_PORT );
# Create the SNMP session
my ($session, $error) = Net::SNMP->session(
-hostname => $ARGV[0] || 'localhost',
-community => $ARGV[1] || 'public',
-port => $ARGV[2] || SNMP_PORT,
-version => 'snmpv2c',
);
# Was the session created?
if (!defined $session) {
printf "ERROR: %s.\n", $error;
exit 1;
}
# iso.org.dod.internet.mgmt.interfaces.ifTable
my $OID_ifTable = '1.3.6.1.2.1.2.2';
printf "\n== SNMPv2c blocking get_table(): %s ==\n\n", $OID_ifTable;
my $result;
if (defined ($result = $session->get_table(-baseoid => $OID_ifTable))) {
for ($session->var_bind_names()) {
printf "%s => %s\n", $_, $result->{$_};
}
print "\n";
} else {
printf "ERROR: %s.\n\n", $session->error();
}
$session->close();
###
## Now a non-blocking example
###
printf "\n== SNMPv2c non-blocking get_table(): %s ==\n\n", $OID_ifTable;
# Blocking and non-blocking objects cannot exist at the
# same time. We must clear the reference to the blocking
# object or the creation of the non-blocking object will
# fail.
$session = undef;
# Create the non-blocking SNMP session
($session, $error) = Net::SNMP->session(
-hostname => $ARGV[0] || 'localhost',
-community => $ARGV[1] || 'public',
-port => $ARGV[2] || SNMP_PORT,
-nonblocking => 1,
-version => 'snmpv2c',
);
# Was the session created?
if (!defined $session) {
printf "ERROR: %s.\n", $error;
exit 1;
}
if (!defined $session->get_table(-baseoid => $OID_ifTable,
-callback => \&print_results_cb))
{
printf "ERROR: %s.\n", $session->error();
}
# Start the event loop
snmp_dispatcher();
print "\n";
exit 0;
sub print_results_cb
{
my ($session) = @_;
if (!defined $session->var_bind_list()) {
printf "ERROR: %s.\n", $session->error();
} else {
for ($session->var_bind_names()) {
printf "%s => %s\n", $_, $session->var_bind_list()->{$_};
}
}
return;
}
# ============================================================================
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