409 lines
11 KiB
Perl
409 lines
11 KiB
Perl
# SNMP::Info::SONMP
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# Eric Miller
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# $Id$
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#
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# Copyright (c) 2004 Eric Miller, Max Baker
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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::SONMP;
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$VERSION = '1.07';
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use strict;
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use Exporter;
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use SNMP::Info;
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@SNMP::Info::SONMP::ISA = qw/SNMP::Info Exporter/;
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@SNMP::Info::SONMP::EXPORT_OK = qw//;
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use vars qw/$VERSION $DEBUG %FUNCS %GLOBALS %MIBS %MUNGE $INIT/;
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%MIBS = (
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'SYNOPTICS-ROOT-MIB' => 'synoptics',
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'S5-ETH-MULTISEG-TOPOLOGY-MIB' => 's5EnMsTop',
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);
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%GLOBALS = (
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'cdp_id' => 's5EnMsTopIpAddr',
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'cdp_run' => 's5EnMsTopStatus',
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);
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%FUNCS = (
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# From S5-ETH-MULTISEG-TOPOLOGY-MIB::TopNmmTable
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'sonmp_topo_slot' => 's5EnMsTopNmmSlot',
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'sonmp_topo_port' => 's5EnMsTopNmmPort',
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'sonmp_topo_ip' => 's5EnMsTopNmmIpAddr',
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'sonmp_topo_seg' => 's5EnMsTopNmmSegId',
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'sonmp_topo_mac' => 's5EnMsTopNmmMacAddr',
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'sonmp_topo_platform' => 's5EnMsTopNmmChassisType',
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'sonmp_topo_localseg' => 's5EnMsTopNmmLocalSeg',
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);
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%MUNGE = (
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'sonmp_topo_mac' => \&SNMP::Info::munge_mac
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);
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sub index_factor {
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return 32;
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}
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sub slot_offset {
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return 1;
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}
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sub port_offset {
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return 0;
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}
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sub hasCDP {
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my $sonmp = shift;
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return $sonmp->cdp_run();
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}
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sub c_if {
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my $sonmp = shift;
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my $partial = shift;
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my $sonmp_topo_port = $sonmp->sonmp_topo_port($partial) || {};
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my $sonmp_topo_slot = $sonmp->sonmp_topo_slot($partial) || {};
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my $index_factor = $sonmp->index_factor();
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my $slot_offset = $sonmp->slot_offset();
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my $port_offset = $sonmp->port_offset();
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my $model = $sonmp->model();
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my %c_if;
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foreach my $entry (keys %$sonmp_topo_port){
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my $port = $sonmp_topo_port->{$entry};
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next unless defined $port;
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next if $port == 0;
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my $slot = $sonmp_topo_slot->{$entry} || 0;
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if ($model eq 'Baystack Hub') {
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my $comidx = $slot;
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if (! ($comidx % 5)) {
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$slot = ($slot / 5);
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} elsif ($comidx =~ /[16]$/) {
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$slot = int($slot/5);
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$port = 25;
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} elsif ($comidx =~ /[27]$/) {
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$slot = int($slot/5);
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$port = 26;
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}
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}
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my $index = (($slot-$slot_offset)*$index_factor) + ($port-$port_offset);
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$c_if{$entry} = $index;
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}
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return \%c_if;
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}
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sub c_ip {
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my $sonmp = shift;
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my $partial = shift;
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my $sonmp_topo_port = $sonmp->sonmp_topo_port($partial) || {};
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my $sonmp_topo_ip = $sonmp->sonmp_topo_ip($partial) || {};
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my %c_ip;
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foreach my $entry (keys %$sonmp_topo_ip){
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my $port = $sonmp_topo_port->{$entry};
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next unless defined $port;
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next if $port == 0;
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my $ip = $sonmp_topo_ip->{$entry};
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$c_ip{$entry} = $ip;
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}
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return \%c_ip;
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}
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sub c_port {
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my $sonmp = shift;
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my $partial = shift;
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my $sonmp_topo_port = $sonmp->sonmp_topo_port($partial) || {};
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my $sonmp_topo_seg = $sonmp->sonmp_topo_seg($partial) || {};
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my $sonmp_topo_platform = $sonmp->sonmp_topo_platform($partial) || {};
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my %c_port;
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foreach my $entry (keys %$sonmp_topo_seg){
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my $port = $sonmp_topo_port->{$entry};
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next unless defined $port;
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next if $port == 0;
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my $seg = $sonmp_topo_seg->{$entry};
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my $platform = $sonmp_topo_platform->{$entry};
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# AP-222x Series does not adhere to port numbering
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if ($platform =~ /AccessPoint/i) {
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$c_port{$entry} = 'dp0';
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}
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# BayHubs send the lower three bytes of the MAC not the slot/port
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elsif ($seg > 4000) {
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$c_port{$entry} = 'unknown';
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}
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else {
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# Segment id is (256 * remote slot_num) + (remote_port)
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my $remote_port = $seg % 256;
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my $remote_slot = int($seg / 256);
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$c_port{$entry} = "$remote_slot.$remote_port";
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}
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}
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return \%c_port;
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}
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sub c_platform {
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my $sonmp = shift;
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my $partial = shift;
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my $sonmp_topo_port = $sonmp->sonmp_topo_port($partial) || {};
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my $sonmp_topo_platform = $sonmp->sonmp_topo_platform($partial) || {};
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my %c_platform;
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foreach my $entry (keys %$sonmp_topo_platform){
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my $port = $sonmp_topo_port->{$entry};
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next unless defined $port;
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next if $port == 0;
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my $platform = $sonmp_topo_platform->{$entry};
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$c_platform{$entry} = $platform;
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}
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return \%c_platform;
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}
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sub mac {
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my $sonmp = shift;
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my $sonmp_topo_port = $sonmp->sonmp_topo_port();
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my $sonmp_topo_mac = $sonmp->sonmp_topo_mac();
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foreach my $entry (keys %$sonmp_topo_port){
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my $port = $sonmp_topo_port->{$entry};
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next unless $port == 0;
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my $mac = $sonmp_topo_mac->{$entry};
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return $mac;
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}
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# Topology turned off, not supported.
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return undef;
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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::SONMP - SNMP Interface to SynOptics Network Management Protocol (SONMP)
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=head1 AUTHOR
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Eric Miller
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=head1 SYNOPSIS
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my $sonmp = new SNMP::Info (
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AutoSpecify => 1,
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Debug => 1,
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DestHost => 'router',
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Community => 'public',
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Version => 2
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);
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my $class = $sonmp->class();
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print " Using device sub class : $class\n";
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$hascdp = $sonmp->hasCDP() ? 'yes' : 'no';
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# Print out a map of device ports with CDP neighbors:
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my $interfaces = $sonmp->interfaces();
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my $c_if = $sonmp->c_if();
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my $c_ip = $sonmp->c_ip();
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my $c_port = $sonmp->c_port();
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foreach my $cdp_key (keys %$c_ip){
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my $iid = $c_if->{$cdp_key};
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my $port = $interfaces->{$iid};
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my $neighbor = $c_ip->{$cdp_key};
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my $neighbor_port = $c_port->{$cdp_key};
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print "Port : $port connected to $neighbor / $neighbor_port\n";
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}
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=head1 DESCRIPTION
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SNMP::Info::SONMP is a subclass of SNMP::Info that provides an object oriented
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interface to the SynOptics Network Management Protocol (SONMP) information
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through SNMP.
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SONMP is a Layer 2 protocol that supplies topology information of devices that
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also speak SONMP, mostly switches and hubs. SONMP is implemented in SynOptics,
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Bay, and Nortel devices. SONMP has been rebranded by Bay then Nortel and is
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know by several different names, most recently Nortel Discovery Protocol (NDP).
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Create or use a device subclass that inherits this class. Do not use directly.
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Each device implements a subset of the global and cache entries.
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Check the return value to see if that data is held by the device.
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=head2 Inherited Classes
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None.
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=head2 Required MIBs
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=over
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=item SYNOPTICS-ROOT-MIB
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=item S5-ETH-MULTISEG-TOPOLOGY-MIB
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=back
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=head1 GLOBAL METHODS
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These are methods that return scalar values from SNMP
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=over
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=item $sonmp->index_factor()
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Returns a number representing the number of ports reserved per slot or switch
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within the device MIB. Defaults to 32.
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=item $sonmp->slot_offset()
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Returns the offset if slot numbering does not start at 0. Defaults to 1.
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=item $sonmp->port_offset()
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Returns the offset if port numbering does not start at 0. Defaults to 0.
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=item $cdp->hasCDP()
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Is SONMP is active in this device?
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=item $sonmp->cdp_id()
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Returns the IP that the device is sending out for its Nmm topology info.
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(B<s5EnMsTopIpAddr>)
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=item $sonmp->cdp_run()
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Returns true if SONMP is on for this device.
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(B<s5EnMsTopStatus>)
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=item $sonmp->mac()
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Returns MAC of the advertised IP address of the device.
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=back
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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 Layer2 Topology info (B<s5EnMsTopNmmTable>)
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=over
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=item $sonmp->sonmp_topo_slot()
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Returns reference to hash. Key: Table entry, Value:slot number
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(B<s5EnMsTopNmmSlot>)
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=item $sonmp->sonmp_topo_port()
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Returns reference to hash. Key: Table entry, Value:Port Number (interface iid)
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(B<s5EnMsTopNmmPort>)
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=item $sonmp->sonmp_topo_ip()
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Returns reference to hash. Key: Table entry, Value:Remote IP address of entry
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(B<s5EnMsTopNmmIpAddr>)
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=item $sonmp->sonmp_topo_seg()
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Returns reference to hash. Key: Table entry, Value:Remote Segment ID
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(B<s5EnMsTopNmmSegId>)
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=item $sonmp->sonmp_topo_mac()
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(B<s5EnMsTopNmmMacAddr>)
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Returns reference to hash. Key: Table entry, Value:Remote MAC address
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=item $sonmp->sonmp_topo_platform
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Returns reference to hash. Key: Table entry, Value:Remote Device Type
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(B<s5EnMsTopNmmChassisType>)
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=item $sonmp->sonmp_topo_localseg
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Returns reference to hash. Key: Table entry, Value: Boolean, if bay_topo_seg()
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is local.
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(B<s5EnMsTopNmmLocalSeg>)
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=back
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=head2 Psuedo CDP information
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All entries with port=0 are local and ignored.
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=over
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=item $sonmp->c_if()
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Returns reference to hash. Key: IID, Value: Local port (interfaces)
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=item $sonmp->c_ip()
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Returns reference to hash. Key: IID, Value: Remote IP address
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If multiple entries exist with the same local port, c_if(), with different IPv4
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addresses, c_ip(), there is either a non-SONMP device in between two or
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more devices or multiple devices which are not directly connected.
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Use the data from the Layer2 Topology Table below to dig deeper.
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=item $sonmp->c_port()
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Returns reference to hash. Key: IID, Value: Remote port (interfaces)
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=item $sonmp->c_platform()
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Returns reference to hash. Key: IID, Value: Remote device type
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=back
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=cut
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