Net::Packet::VLAN - 802.1Q layer 3 object
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;
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.
- 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.
- 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.
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.
Patrice <GomoR> Auffret
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.
NetPacket, Net::RawIP, Net::RawSock