NAME
Net::Packet::CDP - Cisco Discovery Protocol layer 4 object
SYNOPSIS
use Net::Packet::Consts qw(:cdp);
require Net::Packet::CDP;
# Build a layer
my $layer = Net::Packet::CDP->new(
version => 2,
ttl => 180,
checksum => 0,
);
$layer->pack;
print 'RAW: '.unpack('H*', $layer->raw)."\n";
# Read a raw layer
my $layer = Net::Packet::CDP->new(raw => $raw);
print $layer->print."\n";
print 'PAYLOAD: '.unpack('H*', $layer->payload)."\n"
if $layer->payload;DESCRIPTION
This modules implements the encoding and decoding of the Cisco Discovery Protocol layer.
See also Net::Packet::Layer and Net::Packet::Layer4 for other attributes and methods.
ATTRIBUTES
- version - 8 bits
- ttl - 8 bits
- checksum - 16 bits
- typeDeviceId
- typeAddresses
- typePortId
- typeCapabilities
- typeSoftwareVersion
-
All these type attributes keep a pointer to the respective object. That is, for typeDeviceId, you have a pointer to a Net::Packet::CDP::TypeDeviceId object, if applicable.
METHODS
- new
-
Object constructor. You can pass attributes that will overwrite default ones. Default values:
version: 2
ttl: 180
checksum: 0
- pack
-
Packs all attributes into a raw format, in order to inject to network. Returns 1 on success, undef otherwise.
- unpack
-
Unpacks raw data from network and stores attributes into the object. Returns 1 on success, undef otherwise.
CONSTANTS
Load them: use Net::Packet::Consts qw(:cdp);
- NP_CDP_HDR_LEN
-
CDP header length.
- NP_CDP_TYPE_DEVICE_ID
- NP_CDP_TYPE_ADDRESSES
- NP_CDP_TYPE_PORT_ID
- NP_CDP_TYPE_CAPABILITIES
- NP_CDP_TYPE_SOFTWARE_VERSION
- NP_CDP_TYPE_PLATFORM
- NP_CDP_TYPE_VTP_MANAGEMENT_DOMAIN
- NP_CDP_TYPE_DUPLEX
- NP_CDP_TYPE_VOIP_VLAN_REPLY
- NP_CDP_TYPE_TRUST_BITMAP
- NP_CDP_TYPE_UNTRUSTED_PORT_COS
- NP_CDP_TYPE_SYSTEM_NAME
- NP_CDP_TYPE_SYSTEM_OBJECT_ID
- NP_CDP_TYPE_LOCATION
-
Various supported CDP types.
AUTHOR
Patrice <GomoR> Auffret
COPYRIGHT AND LICENSE
Copyright (c) 2004-2006, Patrice <GomoR> Auffret
You may distribute this module under the terms of the Artistic license. See LICENSE.Artistic file in the source distribution archive.