Net::Packet::VLAN.3pm

Langue: en

Version: 2006-11-23 (mandriva - 01/05/08)

Section: 3 (Bibliothèques de fonctions)

Sommaire

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 (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.

NetPacket, Net::RawIP, Net::RawSock