NAME

Net::Frame::Layer::GRE - Generic Route Encapsulation layer object

SYNOPSIS

   use Net::Frame::Layer::GRE qw(:consts);

   # Build a layer
   my $layer = Net::Frame::Layer::GRE->new(
      flags    => 0,
      protocol => NF_GRE_TYPE_IPv4,
   );
   $layer->pack;

   print 'RAW: '.$layer->dump."\n";

   # Read a raw layer
   my $layer = Net::Frame::Layer::GRE->new(raw => $raw);
   $layer->unpack;

   print $layer->print."\n";
   print 'PAYLOAD: '.unpack('H*', $layer->payload)."\n"
      if $layer->payload;

DESCRIPTION

This modules implements the encoding and decoding of the Generic Route Encapsulation layer.

See also Net::Frame::Layer for other attributes and methods.

ATTRIBUTES

flags - 16 bits

GRE header flags.

protocol - 16 bits

Encapsulated protocol.

The following are inherited attributes. See Net::Frame::Layer for more information.

raw

payload

nextLayer

METHODS

new

new (hash)

Object constructor. You can pass attributes that will overwrite default ones. See SYNOPSIS for default values.

The following are inherited methods. Some of them may be overriden in this layer, and some others may not be meaningful in this layer. See Net::Frame::Layer for more information.

layer

computeLengths

computeChecksums

pack

unpack

encapsulate

getLength

getPayloadLength

print

dump

CONSTANTS

Load them: use Net::Frame::Layer::GRE qw(:consts);

NF_GRE_TYPE_IPv4

NF_GRE_TYPE_X25

NF_GRE_TYPE_ARP

NF_GRE_TYPE_CGMP

NF_GRE_TYPE_80211

NF_GRE_TYPE_PPPIPCP

NF_GRE_TYPE_RARP

NF_GRE_TYPE_DDP

NF_GRE_TYPE_AARP

NF_GRE_TYPE_PPPCCP

NF_GRE_TYPE_WCP

NF_GRE_TYPE_8021Q

NF_GRE_TYPE_IPX

NF_GRE_TYPE_STP

NF_GRE_TYPE_IPv6

NF_GRE_TYPE_WLCCP

NF_GRE_TYPE_MPLS

NF_GRE_TYPE_PPPoED

NF_GRE_TYPE_PPPoES

NF_GRE_TYPE_8021X

NF_GRE_TYPE_AoE

NF_GRE_TYPE_80211I

NF_GRE_TYPE_LLDP

NF_GRE_TYPE_LLTD

NF_GRE_TYPE_LOOP

NF_GRE_TYPE_VLAN

NF_GRE_TYPE_PPPPAP

NF_GRE_TYPE_PPPCHAP

Various supported encapsulated layer types.

SEE ALSO

Net::Frame::Layer

AUTHOR

Patrice <GomoR> Auffret

COPYRIGHT AND LICENSE

Copyright (c) 2006-2015, Patrice <GomoR> Auffret

You may distribute this module under the terms of the Artistic license. See LICENSE.Artistic file in the source distribution archive.