495 lines
12 KiB
Perl
495 lines
12 KiB
Perl
# SNMP::Info::Layer3::Nexus
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#
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# Copyright (c) 2012 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::Nexus;
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use strict;
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use Exporter;
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use SNMP::Info::LLDP;
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use SNMP::Info::CDP;
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use SNMP::Info::CiscoImage;
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use SNMP::Info::CiscoPortSecurity;
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use SNMP::Info::CiscoConfig;
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use SNMP::Info::CiscoPower;
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use SNMP::Info::Layer3;
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use SNMP::Info::CiscoStpExtensions;
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use SNMP::Info::CiscoVTP;
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use vars qw/$VERSION %GLOBALS %MIBS %FUNCS %MUNGE/;
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# NOTE : Top-most items gets precedence for @ISA
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@SNMP::Info::Layer3::Nexus::ISA = qw/
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SNMP::Info::CiscoVTP
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SNMP::Info::CiscoStpExtensions
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SNMP::Info::LLDP
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SNMP::Info::CDP
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SNMP::Info::CiscoImage
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SNMP::Info::CiscoPortSecurity
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SNMP::Info::CiscoConfig
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SNMP::Info::CiscoPower
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SNMP::Info::Layer3
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Exporter
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/;
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@SNMP::Info::Layer3::Nexus::EXPORT_OK = qw//;
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use vars qw/$VERSION %GLOBALS %MIBS %FUNCS %MUNGE/;
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$VERSION = '3.07';
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# NOTE: Order creates precedence
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# Example: v_name exists in Bridge.pm and CiscoVTP.pm
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# Bridge is called from Layer3 and CiscoStpExtensions
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# So we want CiscoVTP to come last to get the right one.
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# The @ISA order should be reverse of these orders.
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%MIBS = (
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%SNMP::Info::Layer3::MIBS,
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%SNMP::Info::CiscoPower::MIBS,
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%SNMP::Info::CiscoConfig::MIBS,
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%SNMP::Info::CiscoPortSecurity::MIBS,
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%SNMP::Info::CiscoImage::MIBS,
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%SNMP::Info::CDP::MIBS,
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%SNMP::Info::LLDP::MIBS,
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%SNMP::Info::CiscoStpExtensions::MIBS,
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%SNMP::Info::CiscoVTP::MIBS,
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'CISCO-ENTITY-VENDORTYPE-OID-MIB' => 'cevMIBObjects',
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);
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%GLOBALS = (
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%SNMP::Info::Layer3::GLOBALS,
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%SNMP::Info::CiscoPower::GLOBALS,
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%SNMP::Info::CiscoConfig::GLOBALS,
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%SNMP::Info::CiscoPortSecurity::GLOBALS,
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%SNMP::Info::CiscoImage::GLOBALS,
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%SNMP::Info::CDP::GLOBALS,
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%SNMP::Info::LLDP::GLOBALS,
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%SNMP::Info::CiscoStpExtensions::GLOBALS,
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%SNMP::Info::CiscoVTP::GLOBALS,
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'mac' => 'dot1dBaseBridgeAddress',
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);
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%FUNCS = (
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%SNMP::Info::Layer3::FUNCS,
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%SNMP::Info::CiscoPower::FUNCS,
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%SNMP::Info::CiscoConfig::FUNCS,
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%SNMP::Info::CiscoPortSecurity::FUNCS,
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%SNMP::Info::CiscoImage::FUNCS,
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%SNMP::Info::CDP::FUNCS,
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%SNMP::Info::LLDP::FUNCS,
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%SNMP::Info::CiscoStpExtensions::FUNCS,
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%SNMP::Info::CiscoVTP::FUNCS,
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);
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%MUNGE = (
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%SNMP::Info::Layer3::MUNGE,
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%SNMP::Info::CiscoPower::MUNGE,
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%SNMP::Info::CiscoConfig::MUNGE,
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%SNMP::Info::CiscoPortSecurity::MUNGE,
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%SNMP::Info::CiscoImage::MUNGE,
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%SNMP::Info::CDP::MUNGE,
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%SNMP::Info::LLDP::MUNGE,
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%SNMP::Info::CiscoStpExtensions::MUNGE,
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%SNMP::Info::CiscoVTP::MUNGE,
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);
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sub cisco_comm_indexing { return 1; }
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sub vendor {
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return 'cisco';
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}
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sub os {
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return 'nx-os';
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}
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sub os_ver {
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my $nexus = shift;
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my $descr = $nexus->description();
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return $1 if ( $descr =~ /\),\s+Version\s+(.+?),/ );
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return $descr;
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}
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sub serial {
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my $nexus = shift;
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my $e_parent = $nexus->e_parent();
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foreach my $iid ( keys %$e_parent ) {
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my $parent = $e_parent->{$iid};
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if ($parent eq '0') {
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my $serial = $nexus->e_serial($iid);
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return $serial->{$iid};
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}
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}
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return;
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}
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# sysObjectID returns an IID to an entry in the CISCO-ENTITY-VENDORTYPE-OID-MIB.
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# Look it up and return it.
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sub model {
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my $nexus = shift;
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my $id = $nexus->id();
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unless ( defined $id ) {
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print
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" SNMP::Info::Layer3::Nexus::model() - Device does not support sysObjectID\n"
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if $nexus->debug();
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return;
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}
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my $model = &SNMP::translateObj($id);
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return $id unless defined $model;
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$model =~ s/^cevChassis//i;
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return $model;
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}
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# Reported version 6.x of NX-OS doesn't use the IPv4 address as index
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# override methods in ipAddrTable
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sub ip_table {
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my $nexus = shift;
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my $orig_ip_table = $nexus->orig_ip_table();
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my %ip_table;
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foreach my $iid ( keys %$orig_ip_table ) {
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my $ip = $orig_ip_table->{$iid};
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next unless defined $ip;
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$ip_table{$ip} = $ip;
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}
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return \%ip_table;
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}
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sub ip_index {
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my $nexus = shift;
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my $orig_ip_table = $nexus->orig_ip_table();
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my $orig_ip_index = $nexus->orig_ip_index();
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my %ip_index;
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foreach my $iid ( keys %$orig_ip_table ) {
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my $ip = $orig_ip_table->{$iid};
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my $index = $orig_ip_index->{$iid};
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next unless ( defined $ip && defined $index );
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$ip_index{$ip} = $index;
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}
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return \%ip_index;
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}
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sub ip_netmask {
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my $nexus = shift;
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my $orig_ip_table = $nexus->orig_ip_table();
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my $orig_ip_netmask = $nexus->orig_ip_netmask();
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my %ip_netmask;
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foreach my $iid ( keys %$orig_ip_table ) {
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my $ip = $orig_ip_table->{$iid};
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my $netmask = $orig_ip_netmask->{$iid};
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next unless ( defined $ip && defined $netmask );
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$ip_netmask{$ip} = $netmask;
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}
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return \%ip_netmask;
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}
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sub ip_broadcast {
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my $nexus = shift;
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my $orig_ip_table = $nexus->orig_ip_table();
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my $orig_ip_broadcast = $nexus->orig_ip_broadcast();
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my %ip_broadcast;
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foreach my $iid ( keys %$orig_ip_table ) {
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my $ip = $orig_ip_table->{$iid};
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my $broadcast = $orig_ip_broadcast->{$iid};
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next unless ( defined $ip && defined $broadcast );
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$ip_broadcast{$ip} = $broadcast;
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}
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return \%ip_broadcast;
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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::Nexus - SNMP Interface to Cisco Nexus Switches running
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NX-OS
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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 $nexus = new SNMP::Info(
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AutoSpecify => 1,
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Debug => 1,
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# These arguments are passed directly to SNMP::Session
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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 = $nexus->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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Abstraction subclass for Cisco Nexus Switches running NX-OS.
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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 $nexus = new SNMP::Info::Layer3::Nexus(...);
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=head2 Inherited Classes
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=over
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=item SNMP::Info::Layer3
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=item SNMP::Info::CiscoVTP
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=item SNMP::Info::CDP
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=item SNMP::Info::CiscoImage
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=item SNMP::Info::CiscoPortSecurity
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=item SNMP::Info::CiscoConfig
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=item SNMP::Info::CiscoPower
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=item SNMP::Info::CiscoStpExtensions
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=item SNMP::Info::LLDP
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=back
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=head2 Required MIBs
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=over
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=item F<CISCO-ENTITY-VENDORTYPE-OID-MIB>
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=back
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=over
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=item Inherited Classes' MIBs
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See L<SNMP::Info::Layer3/"Required MIBs"> for its own MIB requirements.
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See L<SNMP::Info::CiscoVTP/"Required MIBs"> for its own MIB requirements.
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See L<SNMP::Info::CDP/"Required MIBs"> for its own MIB requirements.
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See L<SNMP::Info::CiscoImage/"Required MIBs"> for its own MIB requirements.
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See L<SNMP::Info::CiscoPortSecurity/"Required MIBs"> for its own MIB
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requirements.
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See L<SNMP::Info::CiscoConfig/"Required MIBs"> for its own MIB requirements.
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See L<SNMP::Info::CiscoPower/"Required MIBs"> for its own MIB requirements.
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See L<SNMP::Info::CiscoStpExtensions/"Required MIBs"> for its own MIB requirements.
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See L<SNMP::Info::LLDP/"Required MIBs"> for its own MIB requirements.
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=back
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=head1 GLOBALS
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These are methods that return a scalar value from SNMP
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=over
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=item $nexus->vendor()
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Returns 'cisco'
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=item $nexus->os()
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Returns C<'nx-os'>
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=item $nexus->os_ver()
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Returns operating system version extracted from C<sysDescr>.
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=item $nexus->serial()
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Returns the serial number of the chassis from F<ENTITY-MIB>.
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=item $nexus->model()
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Tries to reference $nexus->id() to F<CISCO-ENTITY-VENDORTYPE-OID-MIB>
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Removes C<'cevChassis'> for readability.
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=item $nexus->mac()
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C<dot1dBaseBridgeAddress>
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=item $nexus->cisco_comm_indexing()
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Returns 1. Use vlan indexing.
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=back
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=head2 Overrides
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=head3 IP Address Table
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Each entry in this table is an IP address in use on this device. Some
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versions do not index the table with the IPv4 address in accordance with
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the MIB definition, these overrides correct that behavior.
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=over
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=item $nexus->ip_index()
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Maps the IP Table to the IID
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(C<ipAdEntIfIndex>)
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=item $nexus->ip_table()
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Maps the Table to the IP address
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(C<ipAdEntAddr>)
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=item $nexus->ip_netmask()
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Gives netmask setting for IP table entry.
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(C<ipAdEntNetMask>)
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=item $nexus->ip_broadcast()
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Gives broadcast address for IP table entry.
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(C<ipAdEntBcastAddr>)
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=back
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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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=head2 Global Methods imported from SNMP::Info::CiscoVTP
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See documentation in L<SNMP::Info::CiscoVTP/"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::CiscoImage
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See documentation in L<SNMP::Info::CiscoImage/"GLOBALS"> for details.
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=head2 Globals imported from SNMP::Info::CiscoPortSecurity
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See documentation in L<SNMP::Info::CiscoPortSecurity/"GLOBALS"> for details.
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=head2 Globals imported from SNMP::Info::CiscoConfig
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See documentation in L<SNMP::Info::CiscoConfig/"GLOBALS"> for details.
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=head2 Globals imported from SNMP::Info::CiscoPower
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See documentation in L<SNMP::Info::CiscoPower/"GLOBALS"> for details.
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=head2 Globals imported from SNMP::Info::CiscoStpExtensions
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See documentation in L<SNMP::Info::CiscoStpExtensions/"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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=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 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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=head2 Table Methods imported from SNMP::Info::CiscoVTP
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See documentation in L<SNMP::Info::CiscoVTP/"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::CiscoStats
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See documentation in L<SNMP::Info::CiscoStats/"TABLE METHODS"> for details.
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=head2 Table Methods imported from SNMP::Info::CiscoImage
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See documentation in L<SNMP::Info::CiscoImage/"TABLE METHODS"> for details.
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=head2 Table Methods imported from SNMP::Info::CiscoPortSecurity
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See documentation in L<SNMP::Info::CiscoPortSecurity/"TABLE METHODS"> for
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details.
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=head2 Table Methods imported from SNMP::Info::CiscoConfig
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See documentation in L<SNMP::Info::CiscoConfig/"TABLE METHODS"> for details.
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=head2 Table Methods imported from SNMP::Info::CiscoPower
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See documentation in L<SNMP::Info::CiscoPower/"TABLE METHODS"> for details.
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=head2 Table Methods imported from SNMP::Info::CiscoStpExtensions
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See documentation in L<SNMP::Info::CiscoStpExtensions/"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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=cut
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