258 lines
6.9 KiB
Perl
258 lines
6.9 KiB
Perl
# SNMP::Info::MAU - Media Access Unit - RFC2668
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# Max Baker <max@warped.org>
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#
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# Copyright (c) 2002,2003 Regents of the University of California
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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 notice,
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# this list of conditions and the following disclaimer in the documentation
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# 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" AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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package SNMP::Info::MAU;
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$VERSION = 0.3;
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# $Id$
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use strict;
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use Exporter;
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use SNMP::Info;
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use vars qw/$VERSION $DEBUG %MIBS %FUNCS %GLOBALS %MUNGE $INIT/;
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@SNMP::Info::MAU::ISA = qw/SNMP::Info Exporter/;
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@SNMP::Info::MAU::EXPORT_OK = qw//;
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$DEBUG=0;
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$SNMP::debugging=$DEBUG;
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$INIT = 0;
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%MIBS = ('MAU-MIB' => 'mauMod');
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%GLOBALS = (
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);
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%FUNCS = (
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# Interface MAU Table
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'mau_index' => 'ifMauIfIndex',
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'mau_link' => 'ifMauType',
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'mau_status' => 'ifMauStatus',
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'mau_up' => 'ifMauMediaAvailable',
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'mau_type' => 'ifMauTypeList',
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'mau_type_admin' => 'ifMauDefaultType',
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# Interface Auto-Negotiation Table
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'mau_auto' => 'ifMauAutoNegSupported',
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'mau_autostat' => 'ifMauAutoNegAdminStatus',
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'mau_autosent' => 'ifMauAutoNegCapAdvertised',
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'mau_autorec' => 'ifMauAutoNegCapReceived',
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);
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%MUNGE = (
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# Inherit all the built in munging
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%SNMP::Info::MUNGE,
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# Add ones for our class
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'mau_type' => \&munge_int2bin,
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'mau_autosent' => \&munge_int2bin,
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'mau_autorec' => \&munge_int2bin,
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);
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sub munge_int2bin {
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my $int = shift;
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return undef unless defined $int;
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return unpack("B32", pack("N", $int));
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}
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sub _isfullduplex{
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my $mau = shift;
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my $mautype = shift;
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my @full_types = qw/11 13 16 18 20/;
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foreach my $type ( @full_types ) {
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return 1 if (substr($mautype,32-$type,1) eq '1')
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}
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return 0;
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}
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sub _ishalfduplex{
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my $mau = shift;
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my $mautype = shift;
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my @half_types = qw/10 12 15 17 19/;
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foreach my $type ( @half_types ) {
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return 1 if (substr($mautype,32-$type,1) eq '1')
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}
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return 0;
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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::MAU - Perl5 Interface to SNMP Medium Access Unit (MAU) MIB (RFC2668)
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=head1 DESCRIPTION
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MAU-MIB is used by Layer 2 devices like HP Switches . The MAU table
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contains link and duplex info for the port itself and the device
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connected to that port.
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Inherits all methods from SNMP::Info
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=head1 AUTHOR
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Max Baker (C<max@warped.org>)
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=head1 SYNOPSIS
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my $mau = new SNMP::Info::MAU( DestHost => 'myswitch',
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Community => 'public');
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=head1 CREATING AN OBJECT
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=over
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=item new SNMP::Info::MAU()
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Arguments passed to new() are passed on to SNMP::Session::new()
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my $mau = new SNMP::Info::MAU(
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DestHost => $host,
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Community => 'public',
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Version => 3,...
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)
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die "Couldn't connect.\n" unless defined $mau;
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=back
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=head1 MAU Global Configuration Values
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=over
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=item None
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=back
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=head1 MAU INTERFACE TABLE ENTRIES
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=over
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=item $mau->mau_index() - Returns a list of interfaces
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and their index in the MAU IF Table.
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(B<ifMauIfIndex>)
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=item $mau->mau_link() - Returns the type of Media Access used.
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This is essentially the type of link in use.
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eg. dot3MauType100BaseTXFD - 100BaseT at Full Duplex
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(B<ifMauType>)
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=item $mau->mau_status() - Returns the admin link condition as
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1 - other
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2 - unknown
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3 - operational
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4 - standby
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5 - shutdown
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6 - reset
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Use 5 and !5 to see if the link is up or down on the admin side.
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(B<ifMauStatus>)
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=item $mau->mau_up() - Returns the current link condition
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(B<ifMauMediaAvailable>)
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=item $mau->mau_type() - Returns a 32bit string reporting the capabilities
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of the port from a MAU POV.
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Directly from the MAU-MIB :
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Bit Capability
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0 other or unknown
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1 AUI
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2 10BASE-5
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3 FOIRL
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4 10BASE-2
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5 10BASE-T duplex mode unknown
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6 10BASE-FP
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7 10BASE-FB
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8 10BASE-FL duplex mode unknown
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9 10BROAD36
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10 10BASE-T half duplex mode
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11 10BASE-T full duplex mode
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12 10BASE-FL half duplex mode
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13 10BASE-FL full duplex mode
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14 100BASE-T4
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15 100BASE-TX half duplex mode
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16 100BASE-TX full duplex mode
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17 100BASE-FX half duplex mode
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18 100BASE-FX full duplex mode
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19 100BASE-T2 half duplex mode
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20 100BASE-T2 full duplex mode
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(B<ifMauTypeList>)
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=item $mau->mau_auto() - Returns status of auto-negotiation mode for ports.
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(B<ifMauAutoNegAdminStatus>)
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=item $mau->mau_autosent() - Returns a 32 bit bit-string representing the
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capabilities we are broadcasting on that port
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Uses the same decoder as $mau->mau_type().
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(B<ifMauAutoNegCapAdvertised>)
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=item $mau->mau_autorec() - Returns a 32 bit bit-string representing the
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capabilities of the device on the other end.
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Uses the same decoder as $mau->mau_type().
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(B<ifMauAutoNegCapReceived>)
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=back
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=head1 Utility Functions
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=over
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=item munge_int2bin() - Unpacks an integer into a 32bit bit string.
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=item $mau->_isfullduplex(bitstring)
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Boolean. Checks to see if any of the full_duplex types from mau_type() are
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high. Currently bits 11,13,16,18,20.
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=item $mau->_ishalfduplex(bitstring)
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Boolean. Checks to see if any of the half_duplex types from mau_type() are
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high. Currently bits 10,12,15,17,19.
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=back
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=cut
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