532 lines
13 KiB
Perl
532 lines
13 KiB
Perl
# SNMP::Info::Layer3::Enterasys - SNMP Interface to Enterasys devices
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# $Id$
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#
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# Copyright (c) 2008 Eric Miller
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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::Layer3::Enterasys;
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use strict;
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use Exporter;
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use SNMP::Info::MAU;
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use SNMP::Info::LLDP;
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use SNMP::Info::CDP;
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use SNMP::Info::Layer3;
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@SNMP::Info::Layer3::Enterasys::ISA = qw/SNMP::Info::MAU SNMP::Info::LLDP
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SNMP::Info::CDP SNMP::Info::Layer3
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Exporter/;
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@SNMP::Info::Layer3::Enterasys::EXPORT_OK = qw//;
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use vars qw/$VERSION $DEBUG %GLOBALS %FUNCS $INIT %MIBS %MUNGE/;
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$VERSION = '2.06';
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%MIBS = (
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%SNMP::Info::Layer3::MIBS, %SNMP::Info::CDP::MIBS,
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%SNMP::Info::LLDP::MIBS, %SNMP::Info::MAU::MIBS,
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'ENTERASYS-OIDS-MIB' => 'etsysOidDevice',
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);
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%GLOBALS = (
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%SNMP::Info::Layer3::GLOBALS, %SNMP::Info::CDP::GLOBALS,
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%SNMP::Info::LLDP::GLOBALS, %SNMP::Info::MAU::GLOBALS,
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'mac' => 'dot1dBaseBridgeAddress',
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);
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%FUNCS = (
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%SNMP::Info::Layer3::FUNCS, %SNMP::Info::CDP::FUNCS,
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%SNMP::Info::LLDP::FUNCS, %SNMP::Info::MAU::FUNCS,
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);
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%MUNGE = (
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%SNMP::Info::Layer3::MUNGE, %SNMP::Info::CDP::MUNGE,
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%SNMP::Info::LLDP::MUNGE, %SNMP::Info::MAU::MUNGE,
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);
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sub model {
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my $enterasys = shift;
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my $id = $enterasys->id();
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unless ( defined $id ) {
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print
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" SNMP::Info::Layer3::Enterasys::model() - Device does not support sysObjectID\n"
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if $enterasys->debug();
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return;
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}
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my $model = &SNMP::translateObj($id);
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$model =~ s/^etsysOidDev//i;
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$model =~ s/^etsysOidPhy//i;
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return $id unless defined $model;
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return $model;
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}
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sub vendor {
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return 'enterasys';
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}
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sub os {
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return 'enterasys';
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}
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sub os_ver {
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my $enterasys = shift;
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my $descr = $enterasys->description();
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return unless defined $descr;
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if ( $descr =~ m/\bRev ([\d.]*)/ ) {
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return $1;
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}
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return;
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}
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# Use ifName as it is used for CDP and LLDP.
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sub interfaces {
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my $enterasys = shift;
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my $partial = shift;
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# We need the original ifName, SUPER:: would give us a method definition
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# in a higher class, we could use orig_ but just call the MIB leaf since
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# that's what we really want anyway.
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return $enterasys->ifName($partial)
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|| $enterasys->i_description($partial);
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}
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sub i_ignore {
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my $enterasys = shift;
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my $partial = shift;
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my $interfaces = $enterasys->i_type($partial) || {};
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my %i_ignore;
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foreach my $if ( keys %$interfaces ) {
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if ( $interfaces->{$if} =~ /(rs232|tunnel|loopback|\blo\b|null)/i ) {
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$i_ignore{$if}++;
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}
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}
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return \%i_ignore;
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}
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sub i_duplex {
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my $enterasys = shift;
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my $partial = shift;
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return $enterasys->mau_i_duplex($partial);
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}
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sub i_duplex_admin {
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my $enterasys = shift;
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my $partial = shift;
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return $enterasys->mau_i_duplex_admin($partial);
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}
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# Normal BRIDGE-MIB has issues on some devices, duplicates and
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# non-increasing oids, Use Q-BRIDGE-MIB for macsuck
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sub fw_mac {
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my $enterasys = shift;
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my $partial = shift;
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return $enterasys->qb_fw_mac($partial);
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}
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sub fw_port {
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my $enterasys = shift;
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my $partial = shift;
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return $enterasys->qb_fw_port($partial);
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}
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# Use CDP and/or LLDP
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#
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# LLDP table timefilter implementation continuously increments when walked
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# and we may never reach the end of the table. This behavior can be
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# modified with the "set snmp timefilter break disable" command,
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# unfortunately it is not the default. Query with a partial value of zero
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# which means no time filter.
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sub hasCDP {
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my $enterasys = shift;
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return $enterasys->hasLLDP() || $enterasys->SUPER::hasCDP();
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}
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sub c_ip {
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my $enterasys = shift;
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my $partial = shift;
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my $cdp = $enterasys->SUPER::c_ip($partial) || {};
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my $lldp = $enterasys->lldp_ip(0) || {};
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my %c_ip;
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foreach my $iid ( keys %$cdp ) {
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my $ip = $cdp->{$iid};
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next unless defined $ip;
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$c_ip{$iid} = $ip;
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}
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foreach my $iid ( keys %$lldp ) {
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my $ip = $lldp->{$iid};
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next unless defined $ip;
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$c_ip{$iid} = $ip;
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}
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return \%c_ip;
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}
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sub c_if {
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my $enterasys = shift;
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my $partial = shift;
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my $lldp = $enterasys->lldp_if(0) || {};
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my $cdp = $enterasys->SUPER::c_if($partial) || {};
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my %c_if;
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foreach my $iid ( keys %$cdp ) {
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my $if = $cdp->{$iid};
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next unless defined $if;
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$c_if{$iid} = $if;
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}
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foreach my $iid ( keys %$lldp ) {
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my $if = $lldp->{$iid};
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next unless defined $if;
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$c_if{$iid} = $if;
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}
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return \%c_if;
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}
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sub c_port {
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my $enterasys = shift;
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my $partial = shift;
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my $lldp = $enterasys->lldp_port(0) || {};
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my $cdp = $enterasys->SUPER::c_port($partial) || {};
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my %c_port;
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foreach my $iid ( keys %$cdp ) {
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my $port = $cdp->{$iid};
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next unless defined $port;
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$c_port{$iid} = $port;
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}
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foreach my $iid ( keys %$lldp ) {
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my $port = $lldp->{$iid};
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next unless defined $port;
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$c_port{$iid} = $port;
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}
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return \%c_port;
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}
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sub c_id {
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my $enterasys = shift;
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my $partial = shift;
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my $lldp = $enterasys->lldp_id(0) || {};
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my $cdp = $enterasys->SUPER::c_id($partial) || {};
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my %c_id;
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foreach my $iid ( keys %$cdp ) {
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my $id = $cdp->{$iid};
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next unless defined $id;
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$c_id{$iid} = $id;
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}
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foreach my $iid ( keys %$lldp ) {
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my $id = $lldp->{$iid};
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next unless defined $id;
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$c_id{$iid} = $id;
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}
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return \%c_id;
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}
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sub c_platform {
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my $enterasys = shift;
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my $partial = shift;
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my $lldp = $enterasys->lldp_rem_sysdesc(0) || {};
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my $cdp = $enterasys->SUPER::c_platform($partial) || {};
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my %c_platform;
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foreach my $iid ( keys %$cdp ) {
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my $platform = $cdp->{$iid};
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next unless defined $platform;
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$c_platform{$iid} = $platform;
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}
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foreach my $iid ( keys %$lldp ) {
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my $platform = $lldp->{$iid};
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next unless defined $platform;
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$c_platform{$iid} = $platform;
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}
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return \%c_platform;
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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::Layer3::Enterasys - SNMP Interface to Enterasys Network Devices
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=head1 AUTHOR
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Eric Miller
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=head1 SYNOPSIS
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# Let SNMP::Info determine the correct subclass for you.
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my $enterasys = 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 => 1
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)
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or die "Can't connect to DestHost.\n";
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my $class = $enterasys->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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Provides abstraction to the configuration information obtainable from an
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Enterasys device through SNMP.
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For speed or debugging purposes you can call the subclass directly, but not
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after determining a more specific class using the method above.
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my $enterasys = new SNMP::Info::Layer3::Enterasys(...);
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=head2 Inherited Classes
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=over
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=item SNMP::Info::MAU
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=item SNMP::Info::LLDP
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=item SNMP::Info::CDP
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=item SNMP::Info::Layer3
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=back
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=head2 Required MIBs
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=over
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=item F<ENTERASYS-OIDS-MIB>
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=back
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=head2 Inherited MIBs
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See L<SNMP::Info::MAU/"Required MIBs"> for its MIB requirements.
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See L<SNMP::Info::LLDP/"Required MIBs"> for its MIB requirements.
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See L<SNMP::Info::CDP/"Required MIBs"> for its MIB requirements.
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See L<SNMP::Info::Layer3/"Required MIBs"> for its MIB requirements.
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=head1 GLOBALS
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These are methods that return scalar value from SNMP
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=over
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=item $enterasys->model()
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Returns model type. Checks $enterasys->id() against the
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F<ENTERASYS-OIDS-MIB>.
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=item $enterasys->vendor()
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Returns enterasys
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=item $enterasys->os()
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Returns enterasys
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=item $enterasys->os_ver()
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Returns os version extracted from C<sysDescr>
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=item $enterasys->mac()
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Returns base mac
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(C<dot1dBaseBridgeAddress>)
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=back
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=head2 Overrides
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=over
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=back
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=head2 Globals imported from SNMP::Info::MAU
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See documentation in L<SNMP::Info::MAU/"GLOBALS"> for details.
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=head2 Globals imported from SNMP::Info::LLDP
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See documentation in L<SNMP::Info::LLDP/"GLOBALS"> for details.
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=head2 Globals imported from SNMP::Info::CDP
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See documentation in L<SNMP::Info::CDP/"GLOBALS"> for details.
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=head2 Globals imported from SNMP::Info::Layer3
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See documentation in L<SNMP::Info::Layer3/"GLOBALS"> for details.
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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 Overrides
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=over
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=item $enterasys->interfaces()
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Mapping between the Interface Table Index (iid) and the physical port name.
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=item $enterasys->i_ignore()
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Returns reference to hash. Creates a key for each IID that should be ignored.
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Currently looks for rs232, tunnel,loopback,lo,null from
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$enterasys->interfaces()
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=item $enterasys->i_duplex()
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See documentation for mau_i_duplex() in L<SNMP::Info::MAU/"TABLE METHODS">.
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=item $enterasys->i_duplex_admin()
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See documentation for mau_i_duplex_admin() in
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L<SNMP::Info::MAU/"TABLE METHODS">.
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=item $enterasys->fw_mac()
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Returns reference to hash of forwarding table MAC Addresses.
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=item $enterasys->fw_port()
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Returns reference to hash of forwarding table entries port interface
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identifier (iid).
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(C<dot1qTpFdbPort>)
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=back
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=head2 Topology information
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Based upon the firmware version Enterasys devices may support Cabletron
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Discovery Protocol (CTRON CDP), Cisco Discovery Protocol (CDP), Link Layer
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Discovery Protocol (LLDP), or all. This module currently supports CDP and
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LLDP, but not CTRON CDP. These methods will query both CDP and LLDP and
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return the combination of all information. As a result, there may be
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identical topology information returned from the two protocols
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causing duplicate entries. It is the calling program's responsibility to
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identify any duplicate entries and remove duplicates if necessary.
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=over
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=item $enterasys->hasCDP()
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Returns true if the device is running either CDP or LLDP.
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=item $enterasys->c_if()
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Returns reference to hash. Key: iid Value: local device port (interfaces)
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=item $enterasys->c_ip()
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Returns reference to hash. Key: iid Value: remote IPv4 address
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If multiple entries exist with the same local port, c_if(), with the same IPv4
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address, c_ip(), it may be a duplicate entry.
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If multiple entries exist with the same local port, c_if(), with different
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IPv4 addresses, c_ip(), there is either a non-CDP/LLDP device in between two
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or 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 $enterasys->c_port()
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Returns reference to hash. Key: iid Value: remote port (interfaces)
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=item $enterasys->c_id()
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Returns reference to hash. Key: iid Value: string value used to identify the
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chassis component associated with the remote system.
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=item $enterasys->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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=head2 Table Methods imported from SNMP::Info::MAU
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See documentation in L<SNMP::Info::MAU/"TABLE METHODS"> for details.
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=head2 Table Methods imported from SNMP::Info::LLDP
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See documentation in L<SNMP::Info::LLDP/"TABLE METHODS"> for details.
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=head2 Table Methods imported from SNMP::Info::CDP
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See documentation in L<SNMP::Info::CDP/"TABLE METHODS"> for details.
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=head2 Table Methods imported from SNMP::Info::Layer3
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See documentation in L<SNMP::Info::Layer3/"TABLE METHODS"> for details.
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=cut
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