NAME
Net::Packet::VLAN - 802.1Q layer 3 object
SYNOPSIS
use Net::Packet::Consts qw(:vlan);
require Net::Packet::VLAN;
# Build a layer
my $layer = Net::Packet::VLAN->new(
priority => 0,
cfi => 0,
id => 0,
type => NP_VLAN_TYPE_IPv4,
);
$layer->pack;
print 'RAW: '.unpack('H*', $layer->raw)."\n";
# Read a raw layer
my $layer = Net::Packet::VLAN->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 Virtual LAN/802.1Q layer.
Details: http://standards.ieee.org/getieee802/802.1.html
See also Net::Packet::Layer and Net::Packet::Layer3 for other attributes and methods.
ATTRIBUTES
- priority
-
The priority field.
- cfi
-
The cfi field. It is only one bit long, so set it to 0 or 1.
- id
-
VLAN tag id. You'll love it.
- type
-
Which type the next encapsulated layer is.
- frame
-
This is a Net::Packet::Frame object, built it like any other such frame. Just to mention that you should use dnoFexLien attribute if you put in a Net::Packet::IPv4 layer.
METHODS
- new
-
Object constructor. You can pass attributes that will overwrite default ones. Default values:
priority: 0
cfi: 0
id: 0
type: NP_VLAN_TYPE_IPv4
- 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.
- isTypeArp
- isTypeIpv4
- isTypeIpv6
- isTypeIp - is type IPv4 or IPv6
- isTypeVlan
-
Helper methods. Return true is the encapsulated layer is of specified type, false otherwise.
CONSTANTS
Load them: use Net::Packet::Consts qw(:vlan);
- NP_VLAN_TYPE_ARP
- NP_VLAN_TYPE_IPv4
- NP_VLAN_TYPE_IPv6
- NP_VLAN_TYPE_VLAN
-
Various supported encapsulated frame types.
AUTHOR
Patrice <GomoR> Auffret
COPYRIGHT AND LICENSE
Copyright (c) 2004-2009, Patrice <GomoR> Auffret
You may distribute this module under the terms of the Artistic license. See LICENSE.Artistic file in the source distribution archive.