741 lines
17 KiB
Perl
741 lines
17 KiB
Perl
# SNMP::Info::Layer3::Netscreen
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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::Netscreen;
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use strict;
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use Exporter;
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use SNMP::Info::Layer3;
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use SNMP::Info::IEEE802dot11;
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@SNMP::Info::Layer3::Netscreen::ISA
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= qw/SNMP::Info::Layer3 SNMP::Info::IEEE802dot11 Exporter/;
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@SNMP::Info::Layer3::Netscreen::EXPORT_OK = qw//;
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use vars qw/$VERSION %FUNCS %GLOBALS %MIBS %MUNGE/;
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$VERSION = '3.00_003';
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%MIBS = (
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%SNMP::Info::Layer3::MIBS,
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%SNMP::Info::IEEE802dot11::MIBS,
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'NETSCREEN-SMI' => 'netscreenSetting',
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'NETSCREEN-PRODUCTS-MIB' => 'netscreenGeneric',
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'NETSCREEN-INTERFACE-MIB' => 'nsIfIndex',
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'NETSCREEN-SET-GEN-MIB' => 'nsSetGenSwVer',
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'NETSCREEN-IP-ARP-MIB' => 'nsIpArpAOD',
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);
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%GLOBALS = (
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%SNMP::Info::Layer3::GLOBALS,
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%SNMP::Info::IEEE802dot11::GLOBALS,
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'os_version' => 'nsSetGenSwVer',
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);
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%FUNCS = (
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%SNMP::Info::Layer3::FUNCS,
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%SNMP::Info::IEEE802dot11::FUNCS,
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ns_i_index => 'nsIfIndex',
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ns_i_name => 'nsIfName',
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ns_i_description => 'nsIfDescr',
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ns_i_mac => 'nsIfMAC',
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ns_i_up => 'nsIfStatus',
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ns_ip_table => 'nsIfIp',
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ns_ip_netmask => 'nsIfNetmask',
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at_index => 'nsIpArpIfIdx',
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at_paddr => 'nsIpArpMac',
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at_netaddr => 'nsIpArpIp',
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bp_index => 'nsIfInfo',
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);
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%MUNGE = (
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%SNMP::Info::Layer3::MUNGE,
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%SNMP::Info::IEEE802dot11::MUNGE,
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'ns_i_mac' => \&SNMP::Info::munge_mac,
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'at_paddr' => \&SNMP::Info::munge_mac,
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);
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sub layers {
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return '01001110';
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}
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sub vendor {
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return 'juniper';
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}
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sub os {
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return 'screenos';
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}
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sub os_ver {
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my $netscreen = shift;
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my $descr = $netscreen->description();
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if ( $descr =~ m/version (\d\S*) \(SN: / ) {
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return $1;
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}
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return;
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}
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sub serial {
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my $netscreen = shift;
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my $e_serial = $netscreen->e_serial() || {};
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my $serial = $e_serial->{1} || undef;
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return $1 if ( defined $serial and $serial =~ /(\d+)/ );
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my $descr = $netscreen->description();
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if ( $descr =~ m/version .*\(SN: (\d\S*),/ ) {
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return $1;
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}
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return;
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}
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sub model {
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my $netscreen = shift;
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my $id = $netscreen->id();
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unless ( defined $id ) {
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print
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" SNMP::Info::Layer3::model() - Device does not support sysObjectID\n"
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if $netscreen->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/^netscreen//i;
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return $model;
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}
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# provides mapping from IF-MIB to nsIf interfaces - many to 1 (!)
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# - on WLAN devices wireless0/0(|-[ag]) -> wireless0/0 !!
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sub _if_nsif_map {
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my $netscreen = shift;
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my $i_descr = $netscreen->SUPER::i_description;
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my $ns_descr = $netscreen->i_description;
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my %if_nsif_map = ();
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my @ikeys = sort { $a <=> $b } keys %$i_descr;
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my @nskeys = sort { $a <=> $b } keys %$ns_descr;
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my $i = 0;
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my $n = 0;
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# assumes descriptions are in the same order from both walks
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while ( $i < @ikeys && $n < @nskeys ) {
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# find matching sub interfaces
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while (
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$i < @ikeys
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&& substr(
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$i_descr->{ $ikeys[$i] },
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0,
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length $ns_descr->{ $nskeys[$n] }
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) eq $ns_descr->{ $nskeys[$n] }
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)
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{
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$if_nsif_map{ $ikeys[$i] } = $nskeys[$n];
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$i++;
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}
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$n++;
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# skip non-matching interfaces (e.g. tunnel.N)
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while (
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$i < @ikeys
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&& substr(
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$i_descr->{ $ikeys[$i] },
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0,
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length $ns_descr->{ $nskeys[$n] }
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) ne $ns_descr->{ $nskeys[$n] }
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&& $n < @nskeys
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)
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{
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$if_nsif_map{ $ikeys[$i] } = 0; # no matching interface
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$i++;
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}
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}
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return \%if_nsif_map;
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}
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# Provides mapping from nsIf interfaces to IF-MIB interfaces - many to 1
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# Example, tunnel.# interfaces are not present in IF-MIB. There exist no
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# mapping of index IID's between the tables so create mapping based on names
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sub _nsif_if_map {
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my $netscreen = shift;
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my $i_descr = $netscreen->SUPER::i_description;
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my $ns_descr = $netscreen->i_description;
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my %rev_i_descr = reverse %$i_descr;
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my %rev_ns_descr = reverse %$ns_descr;
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my %nsif_if_map = ();
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foreach my $value ( values %$ns_descr ) {
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if ( exists $rev_i_descr{$value} ) {
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$nsif_if_map{ $rev_ns_descr{$value} } = $rev_i_descr{$value};
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}
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else {
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$nsif_if_map{ $rev_ns_descr{$value} } = 0;
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}
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}
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return \%nsif_if_map;
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}
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sub interfaces {
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my $netscreen = shift;
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return $netscreen->i_description();
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}
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sub i_index {
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my $netscreen = shift;
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return $netscreen->ns_i_index();
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}
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sub i_name {
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my $netscreen = shift;
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return $netscreen->ns_i_name();
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}
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sub i_description {
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my $netscreen = shift;
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# Versions prior to 5.4 do not support nsIfDescr but do have nsIfName
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return $netscreen->ns_i_description() || $netscreen->ns_i_name();
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}
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sub i_mac {
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my $netscreen = shift;
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my $ns_mac = $netscreen->ns_i_mac() || {};
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my $if_i_mac = $netscreen->SUPER::i_mac() || {};
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my $ns_i_map = $netscreen->_nsif_if_map();
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my %i_mac = ();
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foreach my $iid ( keys %$ns_i_map ) {
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$i_mac{$iid} = $ns_mac->{$iid} || $if_i_mac->{ $ns_i_map->{$iid} };
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}
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return \%i_mac;
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}
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sub i_lastchange {
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my $netscreen = shift;
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my $if_i_lastchange = $netscreen->SUPER::i_lastchange() || {};
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my $ns_i_map = $netscreen->_nsif_if_map();
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my %i_lastchange;
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foreach my $iid ( keys %$ns_i_map ) {
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$i_lastchange{$iid} = $if_i_lastchange->{ $ns_i_map->{$iid} };
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}
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return \%i_lastchange;
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}
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sub i_up {
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my $netscreen = shift;
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return $netscreen->ns_i_up();
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}
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sub i_up_admin {
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my $netscreen = shift;
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my $i_up = $netscreen->i_up();
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my $i_up_admin = $netscreen->SUPER::i_up_admin();
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my $ns_i_map = $netscreen->_nsif_if_map();
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my %i_up_admin;
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foreach my $iid ( keys %$ns_i_map ) {
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$i_up_admin{$iid}
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= $i_up->{$iid} eq "up" && "up"
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|| $i_up_admin->{ $ns_i_map->{$iid} }
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|| 0;
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}
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return \%i_up_admin;
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}
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sub i_type {
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my $netscreen = shift;
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my $if_i_type = $netscreen->SUPER::i_type() || {};
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my $ns_i_map = $netscreen->_nsif_if_map();
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my %i_type;
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foreach my $iid ( keys %$ns_i_map ) {
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$i_type{$iid} = $if_i_type->{ $ns_i_map->{$iid} } || "tunnel";
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}
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return \%i_type;
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}
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sub i_mtu {
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my $netscreen = shift;
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my $i_type = $netscreen->SUPER::i_mtu() || {};
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my $ns_i_map = $netscreen->_nsif_if_map();
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my %i_mtu;
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foreach my $iid ( keys %$ns_i_map ) {
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$i_mtu{$iid} = $i_type->{ $ns_i_map->{$iid} };
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}
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return \%i_mtu;
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}
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sub i_ignore {
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return;
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}
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sub i_speed {
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my $netscreen = shift;
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my $i_speed = $netscreen->SUPER::i_speed();
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my $i_name = $netscreen->i_name();
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my $ns_i_map = $netscreen->_nsif_if_map;
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my %i_speed;
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foreach my $iid ( keys %$ns_i_map ) {
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$i_speed{$iid}
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= $i_speed->{ $ns_i_map->{$iid} }
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|| $i_name->{$iid} =~ /tunnel/ && "vpn"
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|| 0;
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}
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return \%i_speed;
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}
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sub _mac_map {
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my $netscreen = shift;
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my $arp_mac = $netscreen->nsIpArpMac() || {};
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my %mac_map = ();
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foreach my $iid ( keys %$arp_mac ) {
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my $oid = join( ".", ( unpack( "C6", $arp_mac->{$iid} ) ) );
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$mac_map{$oid} = $iid;
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}
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return \%mac_map;
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}
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sub ip_index {
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my $netscreen = shift;
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my $ns_ip = $netscreen->ns_ip_table() || {};
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my %ip_index = ();
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foreach my $iid ( keys %$ns_ip ) {
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$ip_index{ $ns_ip->{$iid} } = $iid if $ns_ip->{$iid} ne "0.0.0.0";
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}
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return \%ip_index;
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}
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sub ip_table {
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my $netscreen = shift;
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my $ip_index = $netscreen->ip_index() || {};
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my %ip_table = ();
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foreach my $iid ( keys %$ip_index ) {
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$ip_table{$iid} = $iid;
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}
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return \%ip_table;
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}
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sub ip_netmask {
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my $netscreen = shift;
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my $ip_index = $netscreen->ip_index() || {};
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my $ns_netmask = $netscreen->ns_ip_netmask();
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my %ip_netmask = ();
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foreach my $iid ( keys %$ip_index ) {
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$ip_netmask{$iid} = $ns_netmask->{ $ip_index->{$iid} };
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}
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return \%ip_netmask;
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}
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sub fw_index {
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my $netscreen = shift;
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my %fw_index = ();
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my $arp_mac = $netscreen->nsIpArpMac() || {};
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foreach my $iid ( keys %$arp_mac ) {
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my $oid = join( ".", ( unpack( "C6", $arp_mac->{$iid} ) ) );
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$fw_index{$iid} = $oid;
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}
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return \%fw_index;
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}
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sub fw_mac {
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my $netscreen = shift;
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my $mac_map = $netscreen->_mac_map() || {};
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my %fw_mac = ();
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foreach my $oid ( keys %$mac_map ) {
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my $mac
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= join( ":", ( map { sprintf "%lx", $_ } split( /\./, $oid ) ) );
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$fw_mac{$oid} = $mac;
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}
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return \%fw_mac;
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}
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sub bp_index {
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my $netscreen = shift;
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my $if_info = $netscreen->nsIfInfo() || {};
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my %bp_index = ();
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foreach my $iid ( keys %$if_info ) {
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$bp_index{ $if_info->{$iid} } = $iid;
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}
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return \%bp_index;
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}
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sub fw_port {
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my $netscreen = shift;
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my $fw_index = $netscreen->fw_index();
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my $arp_if = $netscreen->nsIpArpIfIdx() || {};
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my %fw_port;
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foreach my $iid ( keys %$arp_if ) {
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$fw_port{ $fw_index->{$iid} } = $arp_if->{$iid}
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if defined $fw_index->{$iid};
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}
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return \%fw_port;
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}
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# need to remap from IF-MIB index to nsIf index
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sub i_ssidlist {
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my $netscreen = shift;
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my $i_ssidlist = $netscreen->SUPER::i_ssidlist() || {};
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my $ns_i_map = $netscreen->_if_nsif_map();
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my %i_ssidlist;
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foreach my $iid ( keys %$i_ssidlist ) {
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$i_ssidlist{ $ns_i_map->{$iid} } = $i_ssidlist->{$iid};
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}
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return \%i_ssidlist;
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}
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sub i_80211channel {
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my $netscreen = shift;
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my $i_80211channel = $netscreen->SUPER::i_80211channel() || {};
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my $ns_i_map = $netscreen->_if_nsif_map();
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my %i_80211channel;
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foreach my $iid ( keys %$i_80211channel ) {
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$i_80211channel{ $ns_i_map->{$iid} } = $i_80211channel->{$iid};
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}
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return \%i_80211channel;
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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::Netscreen - SNMP Interface to Juniper Netscreen Devices
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=head1 AUTHOR
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Kent Hamilton
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=head1 SYNOPSIS
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#Let SNMP::Info determine the correct subclass for you.
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my $netscreen = 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 => 2
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)
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or die "Can't connect to DestHost.\n";
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my $class = $netscreen->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 a
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Juniper Netscreen devices 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 $netscreen = new SNMP::Info::Layer3::Netscreen(...);
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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::IEEE802dot11
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=back
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=head2 Required MIBs
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=over
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=item F<NETSCREEN-SMI>
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=item F<NETSCREEN-PRODUCTS-MIB>
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=item F<NETSCREEN-INTERFACE-MIB>
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=item F<NETSCREEN-SET-GEN-MIB>
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=item F<NETSCREEN-IP-ARP-MIB>
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=item Inherited Classes' MIBs
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See L<SNMP::Info::Layer3/"Required MIBs"> for its MIB requirements.
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See L<SNMP::Info::IEEE802dot11/"Required MIBs"> for its MIB requirements.
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=back
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=head1 GLOBALS
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|
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These are methods that return scalar value from SNMP
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=over
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=item $netscreen->model()
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Tries to reference $netscreen->id() to F<NETSCREEN-PRODUCTS-MIB>
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=item $netscreen->vendor()
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Returns C<'juniper'>
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=item $netscreen->os()
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Returns C<'screenos'>
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=item $netscreen->os_ver()
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Extracts the OS version from the description string.
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=item $netscreen->serial()
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Returns serial number.
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=back
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=head2 Overrides
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=over
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=item $netscreen->layers()
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Returns 01001110. Device doesn't report layers properly, modified to reflect
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Layer 2 and 3 functionality.
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=back
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=head2 Globals imported from SNMP::Info::Layer3
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See L<SNMP::Info::Layer3/"GLOBALS"> for details.
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=head2 Globals imported from SNMP::Info::IEEE802dot11
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See L<SNMP::Info::IEEE802dot11/"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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=head3 Interface Information
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=over
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=item $netscreen->interfaces()
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Creates a map between the interface identifier (iid) and the physical port
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name.
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Defaults to C<insIfDescr> if available, uses C<nsIfName> if not.
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=item $netscreen->i_description()
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Description of the interface. Uses C<insIfDescr> if available, C<nsIfName>
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if not.
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=item $netscreen->i_ignore()
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Returns without defining any interfaces to ignore.
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=item $netscreen->i_index()
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Default SNMP IID to Interface index.
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(C<nsIfIndex>)
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=item $netscreen->i_lastchange()
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The value of C<sysUpTime> when this port last changed states (up,down),
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maps from C<ifIndex> to C<nsIfIndex>.
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(C<ifLastChange>)
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=item $netscreen->i_mac()
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MAC address of the interface. Note this is just the MAC of the port, not
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anything connected to it. Uses C<nsIfMAC> if available, C<ifPhysAddress>
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if not.
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=item $netscreen->i_mtu()
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INTEGER. Interface MTU value, maps from C<ifIndex> to C<nsIfIndex>.
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(C<ifMtu>)
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=item $netscreen->i_name()
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Interface Name field.
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(C<nsIfName>)
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=item $netscreen->i_speed()
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Speed of the link, maps from C<ifIndex> to C<nsIfIndex>.
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=item $netscreen->i_type()
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Interface type. Maps from C<ifIndex> to C<nsIfIndex>.
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(C<ifType>)
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=item $netscreen->i_up()
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Link Status of the interface. Typical values are 'up' and 'down'.
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(C<nsIfStatus>)
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=item $netscreen->i_up_admin()
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Administrative status of the port. Checks both C<ifAdminStatus> and
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C<nsIfStatus>.
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=back
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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.
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=over
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=item $netscreen->ip_index()
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Maps the IP Table to the IID
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=item $netscreen->ip_table()
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Maps the Table to the IP address
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(C<nsIfIp>)
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=item $netscreen->ip_netmask()
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Gives netmask setting for IP table entry.
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(C<nsIfNetmask>)
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=back
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=head3 Forwarding Table
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Uses C<nsIpArpTable> to emulate the forwarding table.
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=over
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=item $netscreen->fw_index()
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Maps the Forwarding Table to the IID
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=item $netscreen->fw_mac()
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Returns reference to hash of forwarding table MAC Addresses.
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=item $netscreen->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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=item $netscreen->bp_index()
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Returns reference to hash of bridge port table entries map back to interface
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identifier (IID).
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=back
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=head3 Wireless Information
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=over
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=item $dot11->i_ssidlist()
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Returns reference to hash. SSID's recognized by the radio interface.
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Remaps from C<ifIndex> to C<nsIfIndex>.
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(C<dot11DesiredSSID>)
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=item $dot11->i_80211channel()
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Returns reference to hash. Current operating frequency channel of the radio
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interface. Remaps from C<ifIndex> to C<nsIfIndex>.
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=back
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=head2 Table Methods imported from SNMP::Info::Layer3
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See L<SNMP::Info::Layer3/"TABLE METHODS"> for details.
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=head2 Table Methods imported from SNMP::Info::IEEE802dot11
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See L<SNMP::Info::IEEE802dot11/"TABLE METHODS"> for details.
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=cut
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