# SNMP::Info::MAU - Media Access Unit - RFC 2668
# $Id$
#
# Copyright (c) 2008 Max Baker changes from version 0.8 and beyond.
#
# Copyright (c) 2002,2003 Regents of the University of California
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
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# * Neither the name of the University of California, Santa Cruz nor the
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# derived from this software without specific prior written permission.
#
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# POSSIBILITY OF SUCH DAMAGE.
package SNMP::Info::MAU;
use strict;
use Exporter;
use SNMP::Info;
@SNMP::Info::MAU::ISA = qw/SNMP::Info Exporter/;
@SNMP::Info::MAU::EXPORT_OK = qw//;
use vars qw/$VERSION %MIBS %FUNCS %GLOBALS %MUNGE/;
$VERSION = '3.28';
%MIBS = ( 'MAU-MIB' => 'mauMod', 'IANA-MAU-MIB' => 'dot3MauType' );
%GLOBALS = ();
%FUNCS = (
# Interface MAU Table
'mau_index' => 'ifMauIfIndex',
'mau_link' => 'ifMauType',
'mau_status' => 'ifMauStatus',
'mau_up' => 'ifMauMediaAvailable',
'mau_type' => 'ifMauTypeList',
'mau_type_admin' => 'ifMauDefaultType',
# Interface Auto-Negotiation Table
'mau_auto' => 'ifMauAutoNegSupported',
'mau_autostat' => 'ifMauAutoNegAdminStatus',
'mau_autosent' => 'ifMauAutoNegCapAdvertised',
'mau_autorec' => 'ifMauAutoNegCapReceived',
);
%MUNGE = (
# Inherit all the built in munging
%SNMP::Info::MUNGE,
# Add ones for our class
'mau_type' => \&munge_int2bin,
'mau_autosent' => \&munge_int2bin,
'mau_autorec' => \&munge_int2bin,
);
sub munge_int2bin {
my $int = shift;
return unless defined $int;
return unpack( "B32", pack( "N", $int ) );
}
sub _isfullduplex {
my $mau = shift;
my $mautype = shift;
my @full_types = qw/11 13 16 18 20/;
foreach my $type (@full_types) {
return 1 if ( substr( $mautype, 32 - $type, 1 ) eq '1' );
}
return 0;
}
sub _ishalfduplex {
my $mau = shift;
my $mautype = shift;
my @half_types = qw/10 12 15 17 19/;
foreach my $type (@half_types) {
return 1 if ( substr( $mautype, 32 - $type, 1 ) eq '1' );
}
return 0;
}
my %_mau_i_speed_map = (
'10' => '10 Mbps',
'100' => '100 Mbps',
'1000' => '1.0 Gbps',
'10Gig' => '10 Gbps',
);
sub mau_i_speed_admin {
my $mau = shift;
my $mau_index = $mau->mau_index();
my $mau_type_admin = $mau->mau_type_admin();
my %i_speed_admin;
foreach my $mau_port ( keys %$mau_type_admin ) {
my $iid = $mau_index->{$mau_port};
next unless defined $iid;
my $type_adminoid = $mau_type_admin->{$mau_port};
my $type_admin = &SNMP::translateObj($type_adminoid);
next unless defined $type_admin;
if ( $type_adminoid eq '.0.0' ) {
$i_speed_admin{$iid} = 'auto';
}
elsif ($type_admin =~ /^dot3MauType(.*)Base/
&& $_mau_i_speed_map{$1} )
{
$i_speed_admin{$iid} = $_mau_i_speed_map{$1};
}
}
return \%i_speed_admin;
}
sub mau_i_duplex {
my $mau = shift;
my $mau_index = $mau->mau_index();
my $mau_link = $mau->mau_link();
my %i_duplex;
foreach my $mau_port ( keys %$mau_link ) {
my $iid = $mau_index->{$mau_port};
next unless defined $iid;
my $linkoid = $mau_link->{$mau_port};
my $link = &SNMP::translateObj($linkoid);
next unless defined $link;
my $duplex = undef;
if ( $link =~ /fd$/i ) {
$duplex = 'full';
}
elsif ( $link =~ /hd$/i ) {
$duplex = 'half';
}
$i_duplex{$iid} = $duplex if defined $duplex;
}
return \%i_duplex;
}
sub mau_i_duplex_admin {
my $mau = shift;
my $partial = shift;
my $mau_index = $mau->mau_index() || {};
if ($partial) {
my %rev_mau_index = reverse %$mau_index;
$partial = $rev_mau_index{$partial};
}
my $mau_autostat = $mau->mau_autostat($partial) || {};
my $mau_type_admin = $mau->mau_type_admin($partial) || {};
# Older HP4000's don't implement ifMauDefaultType, but we can
# figure out from ifMauAutoNegCapAdvertised what we'd like.
if ( !defined($mau_type_admin) ) {
if ( defined($mau_index) ) {
return mau_i_duplex_admin_old( $mau, $mau_index, $mau_autostat );
}
else {
return;
}
}
my %i_duplex_admin;
foreach my $mau_port ( keys %$mau_type_admin ) {
my $iid = $mau_index->{$mau_port};
next unless defined $iid;
my $autostat = $mau_autostat->{$mau_port};
if ( defined $autostat and $autostat =~ /enabled/i ) {
$i_duplex_admin{$iid} = 'auto';
next;
}
my $type_adminoid = $mau_type_admin->{$mau_port};
my $type_admin = &SNMP::translateObj($type_adminoid);
next unless defined $type_admin;
my $duplex = undef;
if ( $type_admin =~ /fd$/i ) {
$duplex = 'full';
}
elsif ( $type_admin =~ /hd$/i ) {
$duplex = 'half';
}
elsif ( $type_admin eq 'zeroDotZero' ) {
$duplex = 'auto';
}
$i_duplex_admin{$iid} = $duplex if defined $duplex;
}
return \%i_duplex_admin;
}
sub mau_i_duplex_admin_old {
my $mau = shift;
my $mau_index = shift;
my $mau_autostat = shift;
my $interfaces = $mau->interfaces();
my $mau_autosent = $mau->mau_autosent();
my %mau_reverse = reverse %$mau_index;
my %i_duplex_admin;
foreach my $iid ( keys %$interfaces ) {
my $mau_idx = $mau_reverse{$iid};
next unless defined $mau_idx;
my $autostat = $mau_autostat->{$mau_idx};
# HP25xx has this value
if ( defined $autostat and $autostat =~ /enabled/i ) {
$i_duplex_admin{$iid} = 'auto';
next;
}
my $type = $mau_autosent->{$mau_idx};
next unless defined $type;
if ( $type == 0 ) {
$i_duplex_admin{$iid} = 'none';
next;
}
my $full = $mau->_isfullduplex($type);
my $half = $mau->_ishalfduplex($type);
if ( $full && !$half ) {
$i_duplex_admin{$iid} = 'full';
}
elsif ($half) {
$i_duplex_admin{$iid} = 'half';
}
}
return \%i_duplex_admin;
}
sub mau_set_i_speed_admin {
my $mau = shift;
my $speed = shift;
my $iid = shift;
my $rv;
$speed = lc($speed);
if ( !( $speed =~ /(10|100|1000|auto)/io and $iid =~ /\d+/o ) ) {
return;
}
# map a speed value to an integer the switch understands based on duplex
my %speeds;
# 10 = dot3MauType10BaseTHD, 15 = dot3MauType100BaseTXHD
# 29 = dot3MauType1000BaseTHD from IANA-MAU-MIB
%{ $speeds{'HD'} } = qw/10 10 100 15 1000 29/; # half duplex settings
# 11 = dot3MauType10BaseTFD, 16 = dot3MauType100BaseTXFD
# 30 = dot3MauType1000BaseTFD from IANA-MAU-MIB
%{ $speeds{'FD'} } = qw/10 11 100 16 1000 30/; # full duplex settings
my $myhash = $mau->mau_autostat;
my $key = $iid . '.1';
my $i_autoneg = $myhash->{$key};
my $myduplex;
my $i_mau_def_type
= &SNMP::translateObj( $mau->mau_type_admin($iid)->{ $iid . '.1' } );
if ( $i_mau_def_type =~ /^dot3MauType.*Base.*(..)$/
&& ( $1 eq "HD" or $1 eq "FD" ) )
{
$myduplex = $1;
}
else {
# this is not a valid speed known, assuming auto
$myduplex = "auto";
}
if ( $speed eq "auto" && $i_autoneg eq "enabled" ) {
return (1);
}
elsif ( $speed eq "auto" ) {
$rv = $mau->set_mau_autostat( 'enabled', $iid . '.1' );
return ($rv);
}
else {
if ( $i_autoneg eq "enabled" ) {
$mau->set_mau_autostat( 'disabled', $iid . '.1' );
}
$rv
= $mau->set_mau_type_admin(
'.1.3.6.1.2.1.26.4.' . $speeds{$myduplex}{$speed},
$iid . '.1' );
return ($rv);
}
}
sub mau_set_i_duplex_admin {
my $mau = shift;
my $duplex = shift;
my $iid = shift;
my $rv;
$duplex = lc($duplex);
if ( !( $duplex =~ /(full|half|auto)/i and $iid =~ /\d+/ ) ) {
return;
}
# map a textual duplex setting to an integer value the switch will understand
my %duplexes;
%{ $duplexes{'10'} } = qw/full 11 half 10/;
%{ $duplexes{'100'} } = qw/full 16 half 15/;
%{ $duplexes{'1000'} } = qw/full 30 half 29/;
# current port values:
my $myhash = $mau->mau_autostat;
my $key = $iid . '.1';
my $i_autoneg = $myhash->{$key};
my $i_speed
= &SNMP::translateObj( $mau->mau_type_admin($iid)->{ $iid . '.1' } );
if ( $i_speed =~ /^dot3MauType(.*)Base/ && $_mau_i_speed_map{$1} ) {
$i_speed = $1;
}
else {
# this is not a valid speed setting, assuming auto
$duplex = "auto";
}
if ( $duplex eq "auto" && $i_autoneg eq "enabled" ) {
return (1);
}
elsif ( $duplex eq "auto" ) {
$rv = $mau->set_mau_autostat( 'enabled', $iid . '.1' );
return ($rv);
}
else {
# Can't always do it here, if not...
if ( $i_autoneg eq "enabled"
&& defined( $duplexes{$i_speed}{$duplex} ) )
{
$mau->set_mau_autostat( 'disabled', $iid . '.1' );
}
$rv
= $mau->set_mau_type_admin(
'.1.3.6.1.2.1.26.4.' . $duplexes{$i_speed}{$duplex},
$iid . '.1' );
return ($rv);
}
}
#
# mau_set_i_speed_duplex_admin() accepts the following values for speed/duplex
#
# auto/auto (special case)
# 10/half
# 10/full
# 100/half
# 100/full
# 1000/half
# 1000/full
sub mau_set_i_speed_duplex_admin {
my $mau = shift;
my $speed = shift;
my $duplex = shift;
my $iid = shift;
my $rv;
$speed = lc($speed);
$duplex = lc($duplex);
if ( ( $speed !~ m/auto|10|100|1000/io )
or ( $duplex !~ m/full|half|auto/io )
or ( $iid !~ /\d+/ ) )
{
return ("bad arguments");
}
# map input speed and duplex paramters to 'mau_type_admin' settings
# From IANA-MAU-MIB
# 11 = dot3MauType10BaseTFD, 10 = dot3MauType10BaseTHD,
# 16 = dot3MauType100BaseTXFD, 15 = dot3MauType100BaseTXHD
# 30 = dot3MauType1000BaseTFD, 29 = dot3MauType1000BaseTHD
my %params;
%{ $params{'10'} } = qw/full 11 half 10/;
%{ $params{'100'} } = qw/full 16 half 15/;
%{ $params{'1000'} } = qw/full 30 half 29/;
# if given "auto/auto", set 'mau_autostat' to "enable" and exit
if ( ( $speed eq "auto" ) or ( $duplex eq "auto" ) ) {
$rv = $mau->set_mau_autostat( 'enabled', $iid . '.1' );
return ($rv);
}
$rv
= $mau->set_mau_type_admin(
'.1.3.6.1.2.1.26.4.' . $params{$speed}{$duplex},
$iid . '.1' );
$rv = $mau->set_mau_autostat( 'disabled', $iid . '.1' );
return ($rv);
}
1;
__END__
=head1 NAME
SNMP::Info::MAU - SNMP Interface to Medium Access Unit (MAU) MIB (RFC 2668)
via SNMP
=head1 AUTHOR
Max Baker
=head1 SYNOPSIS
my $mau = new SNMP::Info (
AutoSpecify => 1,
Debug => 1,
DestHost => 'hpswitch',
Community => 'public',
Version => 2
);
my $class = $mau->class();
print " Using device sub class : $class\n";
=head1 DESCRIPTION
SNMP::Info::MAU is a subclass of SNMP::Info that supplies access to the
F<MAU-MIB> (RFC 2668). This MIB is sometimes implemented on Layer 2 network
devices like HP Switches. MAU = Media Access Unit.
The MAU table contains link and duplex info for the port itself and the device
connected to that port.
Normally you use or create a subclass of SNMP::Info that inherits this one.
Do not use directly.
For debugging purposes call the class directly as you would SNMP::Info
my $mau = new SNMP::Info::MAU(...);
=head2 Inherited Classes
None.
=head2 Required MIBs
=over
=item F<MAU-MIB>
=back
=head1 GLOBALS
These are methods that return scalar value from SNMP
=over
=item None
=back
=head1 TABLE METHODS
These are methods that return tables of information in the form
of a reference to a hash.
=over
=item $mau->mau_i_duplex()
Parses mau_index and mau_link to return the duplex information for
interfaces.
=item $mau->mau_i_duplex_admin()
Parses C<mac_index>,C<mau_autostat>,C<mau_type_admin> in
order to find the admin duplex setting for all the interfaces.
Returns either (auto,full,half).
=item $mau->mau_i_duplex_admin_old()
Called by mau_i_duplex_admin() if C<mau_type_admin> is empty.
Parses C<mau_index>,C<mau_autostat>,C<mau_autosent> in
order to find the admin duplex setting for all the interfaces.
Returns either (auto,none,full,half).
=item $mau->mau_i_speed_admin()
Returns admin speed setting for all the interfaces.
=back
=head2 MAU Interface Table Methods
=over
=item $mau->mau_index() - Returns a list of interfaces
and their index in the MAU IF Table.
(C<ifMauIfIndex>)
=item $mau->mau_link() - Returns the type of Media Access used.
This is essentially the type of link in use.
eg. dot3MauType100BaseTXFD - 100BaseT at Full Duplex
(C<ifMauType>)
=item $mau->mau_status() - Returns the admin link condition as
1 - other
2 - unknown
3 - operational
4 - standby
5 - shutdown
6 - reset
Use 5 and !5 to see if the link is up or down on the admin side.
(C<ifMauStatus>)
=item $mau->mau_up() - Returns the current link condition
(C<ifMauMediaAvailable>)
=item $mau->mau_type() - Returns a 32bit string reporting the capabilities
of the port from a MAU POV.
Directly from F<MAU-MIB> :
Bit Capability
0 other or unknown
1 AUI
2 10BASE-5
3 FOIRL
4 10BASE-2
5 10BASE-T duplex mode unknown
6 10BASE-FP
7 10BASE-FB
8 10BASE-FL duplex mode unknown
9 10BROAD36
10 10BASE-T half duplex mode
11 10BASE-T full duplex mode
12 10BASE-FL half duplex mode
13 10BASE-FL full duplex mode
14 100BASE-T4
15 100BASE-TX half duplex mode
16 100BASE-TX full duplex mode
17 100BASE-FX half duplex mode
18 100BASE-FX full duplex mode
19 100BASE-T2 half duplex mode
20 100BASE-T2 full duplex mode
(C<ifMauTypeList>)
=item $mau->mau_type_admin()
(C<ifMauDefaultType>)
=item $mau->mau_auto() - Indicates whether or not auto-negotiation is
supported.
(C<ifMauAutoNegSupported>)
=item $mau->mau_autostat() - Returns status of auto-negotiation mode for
ports.
(C<ifMauAutoNegAdminStatus>)
=item $mau->mau_autosent() - Returns a 32 bit bit-string representing the
capabilities we are broadcasting on that port
Uses the same decoder as $mau->mau_type().
(C<ifMauAutoNegCapAdvertised>)
=item $mau->mau_autorec() - Returns a 32 bit bit-string representing the
capabilities of the device on the other end.
Uses the same decoder as $mau->mau_type().
(C<ifMauAutoNegCapReceived>)
=back
=head1 SET METHODS
These are methods that provide SNMP set functionality for overridden methods
or provide a simpler interface to complex set operations. See
L<SNMP::Info/"SETTING DATA VIA SNMP"> for general information on set
operations.
=over
=item $mau->mau_set_i_speed_admin(speed, ifIndex)
Sets port speed, must be supplied with speed and port C<ifIndex>.
Note that this method has some limitations since there is no way
to reliably set the port speed independently of the port duplex
setting on certain devices, notably the Cisco Cat4k series.
Speed choices are '10', '100', '1000', 'auto'.
=item $mau->mau_set_i_duplex_admin(duplex, ifIndex)
Sets port duplex, must be supplied with duplex and port C<ifIndex>.
Note that this method has some limitations since there is no way
to reliably set the port duplex independently of the port speed
setting on certain devices, notably the Cisco Cat4k series.
Duplex choices are 'auto', 'half', 'full'.
=item $mau->mau_set_i_speed_duplex_admin(speed, duplex, ifIndex)
Sets port speed and duplex settings, must be supplied with speed,
duplex and port C<ifIndex>.
Accepts the following values for speed and duplex:
Speed/Duplex
------------
auto/auto (this is a special case)
10/half
10/full
100/half
100/full
1000/half
1000/full
=back
=head1 Utility Functions
=over
=item munge_int2bin() - Unpacks an integer into a 32bit bit string.
=item $mau->_isfullduplex(bitstring)
Boolean. Checks to see if any of the full_duplex types from mau_type()
are high. Currently bits 11,13,16,18,20.
=item $mau->_ishalfduplex(bitstring)
Boolean. Checks to see if any of the half_duplex types from mau_type()
are high. Currently bits 10,12,15,17,19.
=back
=cut