194 lines
5.5 KiB
Perl
194 lines
5.5 KiB
Perl
# SNMP::Info::CiscoPower
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# $Id$
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#
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# Copyright (c) 2008 Bill Fenner
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the University of California, Santa Cruz nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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package SNMP::Info::CiscoPower;
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use strict;
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use Exporter;
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use SNMP::Info;
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@SNMP::Info::CiscoPower::ISA = qw/SNMP::Info Exporter/;
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@SNMP::Info::CiscoPower::EXPORT_OK = qw//;
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use vars qw/$VERSION %MIBS %FUNCS %GLOBALS %MUNGE/;
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$VERSION = '3.54';
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%MIBS = ( 'CISCO-POWER-ETHERNET-EXT-MIB' => 'cpeExtPsePortEntPhyIndex',
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'CISCO-CDP-MIB' => 'cdpCachePowerConsumption' );
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%GLOBALS = ();
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%FUNCS = (
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'cpeth_ent_phy' => 'cpeExtPsePortEntPhyIndex',
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'peth_port_power' => 'cpeExtPsePortPwrConsumption',
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);
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%MUNGE = ();
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# Cisco overcame the limitation of the module.port index of the
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# pethPsePortTable by adding another mapping table, which maps
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# a pethPsePortTable row to an entPhysicalTable index, which can
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# then be mapped to ifIndex.
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sub peth_port_ifindex {
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my $cpeth = shift;
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my $partial = shift;
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my $ent_phy = $cpeth->cpeth_ent_phy($partial);
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my $e_port = $cpeth->e_port();
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my $peth_port_ifindex = {};
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foreach my $i ( keys %$ent_phy ) {
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if ( $e_port->{ $ent_phy->{$i} } ) {
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$peth_port_ifindex->{$i} = $e_port->{ $ent_phy->{$i} };
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}
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}
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return $peth_port_ifindex;
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}
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# peth_port_neg_power uses the same index as the other peth_port_* tables.
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# However, cdpCachePowerConsumption uses <ifIndex>.<neighbor>.
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# Therefore, we have to invert peth_port_ifindex, to get to
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# the index that is expected and the rest of the code can re-invert it.
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sub peth_port_neg_power {
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my $cpeth = shift;
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my $partial = shift;
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# Ignoring partial, since it's not easy to implement properly.
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my $index = $cpeth->peth_port_ifindex();
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my %inverse_index;
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foreach my $i ( keys %$index ) {
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$inverse_index{ $index->{$i} } = $i;
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}
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my $neg_power = $cpeth->cdpCachePowerConsumption();
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my $peth_port_neg_power = {};
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foreach my $i ( keys %$neg_power ) {
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my( $ifIndex, $nbrIndex ) = split( /\./, $i );
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if ( defined( $inverse_index{ $ifIndex } ) ) {
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$peth_port_neg_power->{ $inverse_index{ $ifIndex } } = $neg_power->{ $i };
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}
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}
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return $peth_port_neg_power;
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}
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1;
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__END__
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=head1 NAME
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SNMP::Info::CiscoPower - SNMP Interface to data stored in
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F<CISCO-POWER-ETHERNET-EXT-MIB>.
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=head1 AUTHOR
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Bill Fenner
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=head1 SYNOPSIS
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# Let SNMP::Info determine the correct subclass for you.
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my $poe = new SNMP::Info(
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AutoSpecify => 1,
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Debug => 1,
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DestHost => 'myswitch',
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Community => 'public',
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Version => 2
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)
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or die "Can't connect to DestHost.\n";
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my $class = $poe->class();
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print "SNMP::Info determined this device to fall under subclass : $class\n";
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=head1 DESCRIPTION
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The Info::PowerEthernet class needs a per-device helper function to
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properly map the C<pethPsePortTable> to C<ifIndex> values. This class
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provides that helper, using F<CISCO-POWER-ETHERNET-EXT-MIB>.
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It does not define any helpers for the extra values that this MIB
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contains.
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Create or use a device subclass that inherit this class. Do not use directly.
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For debugging purposes you can call this class directly as you would
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SNMP::Info
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my $poe = new SNMP::Info::CiscoPower (...);
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=head2 Inherited Classes
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none.
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Note that it requires that the device inherits from Info::Entity.
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=head2 Required MIBs
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=over
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=item F<CISCO-POWER-ETHERNET-EXT-MIB>
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=back
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=head1 GLOBALS
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none.
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=head1 TABLE METHODS
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These are methods that return tables of information in the form of a reference
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to a hash.
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=head2 Power Port Table
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=over
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=item $poe->peth_port_ifindex()
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Maps the C<pethPsePortTable> to C<ifIndex> by way of the F<ENTITY-MIB>.
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=item $poe->peth_port_power()
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Power supplied by PoE ports, in milliwatts
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(C<cpeExtPsePortPwrConsumption>)
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=back
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=head2 CDP Port table
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=over
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=item $poe->peth_port_neg_power()
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Power negotiated using CDP, in milliwatts
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(C<cdpCachePowerConsumption>)
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=back
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=cut
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