370 lines
8.8 KiB
Perl
370 lines
8.8 KiB
Perl
# SNMP::Info::FDP
|
|
#
|
|
# Copyright (c) 2008 Bruce Rodger, Max Baker
|
|
# All rights reserved.
|
|
#
|
|
# Copyright (c) 2002,2003 Regents of the University of California
|
|
# All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions are met:
|
|
#
|
|
# * Redistributions of source code must retain the above copyright notice,
|
|
# this list of conditions and the following disclaimer.
|
|
# * Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
# * Neither the name of the University of California, Santa Cruz nor the
|
|
# names of its contributors may be used to endorse or promote products
|
|
# derived from this software without specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
# LIABLE FOR # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
# POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
package SNMP::Info::FDP;
|
|
|
|
use strict;
|
|
use warnings;
|
|
use Exporter;
|
|
use SNMP::Info;
|
|
|
|
@SNMP::Info::FDP::ISA = qw/SNMP::Info Exporter/;
|
|
@SNMP::Info::FDP::EXPORT_OK = qw//;
|
|
|
|
our ($VERSION, %FUNCS, %GLOBALS, %MIBS, %MUNGE);
|
|
|
|
$VERSION = '3.79';
|
|
|
|
%MIBS = ( 'FOUNDRY-SN-SWITCH-GROUP-MIB' => 'snFdpGlobalRun' );
|
|
|
|
%GLOBALS = (
|
|
'fdp_run' => 'snFdpGlobalRun',
|
|
'fdp_interval' => 'snFdpGlobalMessageInterval',
|
|
'fdp_holdtime' => 'snFdpGlobalHoldTime',
|
|
);
|
|
|
|
%FUNCS = (
|
|
'fdp_proto' => 'snFdpCacheAddressType',
|
|
'fdp_ip' => 'snFdpCacheAddress',
|
|
'fdp_ver' => 'snFdpCacheVersion',
|
|
'fdp_id' => 'snFdpCacheDeviceId',
|
|
'fdp_port' => 'snFdpCacheDevicePort',
|
|
'fdp_platform' => 'snFdpCachePlatform',
|
|
'fdp_capabilities' => 'snFdpCacheCapabilities',
|
|
'fdp_cache_type' => 'snFdpCacheVendorId',
|
|
);
|
|
|
|
%MUNGE = (
|
|
'fdp_capabilities' => \&SNMP::Info::munge_bits,
|
|
'fdp_ip' => \&SNMP::Info::munge_ip,
|
|
);
|
|
|
|
sub fdp_run {
|
|
my $fdp = shift;
|
|
my $fdp_run = $fdp->orig_fdp_run();
|
|
|
|
# if fdp_run isn't implemented on device, assume FDP is on
|
|
return $fdp_run if defined $fdp_run;
|
|
return 1;
|
|
}
|
|
|
|
sub hasFDP {
|
|
my $fdp = shift;
|
|
|
|
my $ver = $fdp->snmp_ver();
|
|
|
|
# SNMP v1 clients dont have the globals
|
|
if ( defined $ver and $ver == 1 ) {
|
|
my $fdp_ip = $fdp->fdp_ip();
|
|
|
|
# See if anything in fdp cache, if so we have fdp
|
|
return 1 if ( defined $fdp_ip and scalar( keys %$fdp_ip ) );
|
|
return;
|
|
}
|
|
|
|
return $fdp->fdp_run();
|
|
}
|
|
|
|
sub fdp_if {
|
|
my $fdp = shift;
|
|
|
|
my $fdp_ip = $fdp->fdp_ip();
|
|
unless ( defined $fdp_ip ) {
|
|
$fdp->error_throw(
|
|
"SNMP::Info::FDP:fdp_if() - Device doesn't have fdp_ip() data. Can't fake fdp_index()"
|
|
);
|
|
return;
|
|
}
|
|
|
|
my %fdp_if;
|
|
foreach my $key ( keys %$fdp_ip ) {
|
|
next unless defined $key;
|
|
my $iid = $key;
|
|
|
|
# Truncate .1 from fdp cache entry
|
|
$iid =~ s/\.\d+$//;
|
|
$fdp_if{$key} = $iid;
|
|
}
|
|
|
|
return \%fdp_if;
|
|
}
|
|
|
|
1;
|
|
__END__
|
|
|
|
=head1 NAME
|
|
|
|
SNMP::Info::FDP - SNMP Interface to Foundry Discovery Protocol (FDP) using
|
|
SNMP
|
|
|
|
=head1 AUTHOR
|
|
|
|
Bruce Rodger, Max Baker
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
my $fdp = new SNMP::Info (
|
|
AutoSpecify => 1,
|
|
Debug => 1,
|
|
DestHost => 'router',
|
|
Community => 'public',
|
|
Version => 2
|
|
);
|
|
|
|
my $class = $fdp->class();
|
|
print " Using device sub class : $class\n";
|
|
|
|
$hasfdp = $fdp->hasFDP() ? 'yes' : 'no';
|
|
|
|
# Print out a map of device ports with FDP neighbors:
|
|
my $interfaces = $fdp->interfaces();
|
|
my $fdp_if = $fdp->fdp_if();
|
|
my $fdp_ip = $fdp->fdp_ip();
|
|
my $fdp_port = $fdp->fdp_port();
|
|
|
|
foreach my $fdp_key (keys %$fdp_ip){
|
|
my $iid = $fdp_if->{$fdp_key};
|
|
my $port = $interfaces->{$iid};
|
|
my $neighbor = $fdp_ip->{$fdp_key};
|
|
my $neighbor_port = $fdp_port->{$fdp_key};
|
|
print "Port : $port connected to $neighbor / $neighbor_port\n";
|
|
}
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
SNMP::Info::FDP is a subclass of SNMP::Info that provides an object oriented
|
|
interface to FDP information through SNMP.
|
|
|
|
FDP is a Layer 2 protocol that supplies topology information of
|
|
devices that also speak FDP, mostly switches and routers. It has
|
|
similar functionality to Cisco's CDP, and the SNMP interface is
|
|
virtually identical. FDP is implemented in Brocade (Foundry) devices.
|
|
|
|
Create or use a device subclass that inherits this class. Do not use
|
|
directly.
|
|
|
|
Each device implements a subset of the global and cache entries.
|
|
Check the return value to see if that data is held by the device.
|
|
|
|
=head2 Inherited Classes
|
|
|
|
None.
|
|
|
|
=head2 Required MIBs
|
|
|
|
=over
|
|
|
|
=item F<FOUNDRY-SN-SWITCH-GROUP-MIB>
|
|
|
|
Needs a reasonably recent MIB. Works OK with B2R07604A.mib, but doesn't
|
|
work with B2R07600C.
|
|
|
|
=back
|
|
|
|
=head1 GLOBALS
|
|
|
|
These are methods that return scalar values from SNMP
|
|
|
|
=over
|
|
|
|
=item $fdp->hasFDP()
|
|
|
|
Is FDP is active in this device?
|
|
|
|
Accounts for SNMP version 1 devices which may have FDP but not fdp_run()
|
|
|
|
=item $fdp->fdp_run()
|
|
|
|
Is FDP enabled on this device?
|
|
|
|
(C<fdpGlobalRun>)
|
|
|
|
=item $fdp->fdp_interval()
|
|
|
|
Interval in seconds at which FDP messages are generated.
|
|
|
|
(C<fdpGlobalMessageInterval>)
|
|
|
|
=item $fdp->fdp_holdtime()
|
|
|
|
Time in seconds that FDP messages are kept.
|
|
|
|
(C<fdpGlobalHoldTime>)
|
|
|
|
=back
|
|
|
|
=head2 Overrides
|
|
|
|
CDP compatibility
|
|
|
|
=over
|
|
|
|
=item $fdp->fdp_interval()
|
|
|
|
Interval in seconds at which FDP messages are generated.
|
|
|
|
(C<fdpGlobalMessageInterval>)
|
|
|
|
=item $fdp->fdp_holdtime()
|
|
|
|
Time in seconds that FDP messages are kept.
|
|
|
|
(C<fdpGlobalHoldTime>)
|
|
|
|
=item $fdp->fdp_id()
|
|
|
|
Returns FDP device ID.
|
|
|
|
This is the device id broadcast via FDP to other devices, and is what is
|
|
retrieved from remote devices with $fdp->id().
|
|
|
|
(C<fdpGlobalDeviceId>)
|
|
|
|
=item $fdp->fdp_run()
|
|
|
|
Is FDP enabled on this device?
|
|
|
|
=back
|
|
|
|
=head1 TABLE METHODS
|
|
|
|
These are methods that return tables of information in the form of a reference
|
|
to a hash.
|
|
|
|
=head2 Overrides
|
|
|
|
CDP compatibility
|
|
|
|
=over
|
|
|
|
=item $fdp->fdp_capabilities()
|
|
|
|
Returns Device Functional Capabilities. Results are munged into an ascii
|
|
binary string, MSB. Each digit represents a bit from the table below.
|
|
|
|
From L<http://www.cisco.com/univercd/cc/td/doc/product/lan/trsrb/frames.htm#18843>:
|
|
|
|
(Bit) - Description
|
|
|
|
=over
|
|
|
|
=item (0x40) - Provides level 1 functionality.
|
|
|
|
=item (0x20) - The bridge or switch does not forward IGMP Report packets on
|
|
non router ports.
|
|
|
|
=item (0x10) - Sends and receives packets for at least one network layer
|
|
protocol. If the device is routing the protocol, this bit should not be set.
|
|
|
|
=item (0x08) - Performs level 2 switching. The difference between this bit
|
|
and bit 0x02 is that a switch does not run the Spanning-Tree Protocol. This
|
|
device is assumed to be deployed in a physical loop-free topology.
|
|
|
|
=item (0x04) - Performs level 2 source-route bridging. A source-route bridge
|
|
would set both this bit and bit 0x02.
|
|
|
|
=item (0x02) - Performs level 2 transparent bridging.
|
|
|
|
=item (0x01) - Performs level 3 routing for at least one network layer
|
|
protocol.
|
|
|
|
=back
|
|
|
|
Thanks to Martin Lorensen for a pointer to this information.
|
|
|
|
(C<fdpCacheCapabilities>)
|
|
|
|
=item $fdp->fdp_id()
|
|
|
|
Returns remote device id string
|
|
|
|
(C<fdpCacheDeviceId>)
|
|
|
|
=item $fdp->fdp_if()
|
|
|
|
Returns the mapping to the SNMP Interface Table.
|
|
|
|
In order to map the fdp table entry back to the interfaces() entry, we
|
|
truncate the last number off of it :
|
|
|
|
my $fdp_ip = $device->fdp_ip();
|
|
|
|
my %fdp_if
|
|
foreach my $key (keys %$fdp_ip){
|
|
$iid = $key;
|
|
## Truncate off .1 from fdp response
|
|
$iid =~ s/\.\d+$//;
|
|
$fdp_if{$key} = $iid;
|
|
}
|
|
|
|
return \%fdp_if;
|
|
|
|
=item $fdp->fdp_ip()
|
|
|
|
Returns remote IP address
|
|
|
|
(C<fdpCacheAddress>)
|
|
|
|
=item $fdp->fdp_platform()
|
|
|
|
Returns remote platform id
|
|
|
|
(C<fdpCachePlatform>)
|
|
|
|
=item $fdp->fdp_port()
|
|
|
|
Returns remote port ID
|
|
|
|
(C<fdpDevicePort>)
|
|
|
|
=item $fdp->fdp_proto()
|
|
|
|
Returns remote address type received. Usually IP.
|
|
|
|
(C<fdpCacheAddressType>)
|
|
|
|
=item $fdp->fdp_ver()
|
|
|
|
Returns remote hardware version
|
|
|
|
(C<fdpCacheVersion>)
|
|
|
|
=item $fdp->fdp_cache_type()
|
|
|
|
Returns type of entry received, either FDP or CDP.
|
|
|
|
(C<snFdpCacheVendorId>)
|
|
|
|
=back
|
|
|
|
=cut
|