NAME

Net::ASN - Perl extension for manipulating autonomous system numbers

SYNOPSIS

##OO implementation (methods)

use Net::ASN;

my $asn = Net::ASN->new($ARGV[0]);

print "type     : " . $asn->gettype     . "\n";
print "asplain16: " . $asn->toasplain16 . "\n";
print "asplain32: " . $asn->toasplain   . "\n";
print "asdot    : " . $asn->toasdot     . "\n";
print "asdotplus: " . $asn->toasdotplus . "\n";
print "\n";

##Non OO implementation (functions)

use Net::ASN qw(:all);

my $asplain = 12345;

print "ASN in asdotplus format is " . plaintodotplus($asplain) . "\n";

my $asdotplus = '1.1';

print "ASN in asplain format is "   . dotplustoplain($asdotplus) . "\n";

DESCRIPTION

Net::ASN provides functions for parsing autonomous system numbers (ASNs) as defined in RFC 1771 and extended by RFC4893, also converting between formats discussed in the RFC5396

Both an OO implementation (method based) and non-OO (function based) are provided for convenience.

METHODS

new

my $asn = Net::ASN->new(1234);		#Automatic parsing
or
my $asn = Net::ASN->new(1234,1);	#Parse as ASDOT

Creates a new Net::ASN object, prompting parsing of the supplied parameter, an ASN. Currently, only ASPLAIN and ASDOT+ are automatically recognised as input formats. If you wish to force input as ASDOT you must provide a second argument to the constructor.

gettype

my $type = $asn->gettype;

Returns the type of ASN the parser assumes it is dealing with.

toasplain

my $asplain = $asn->toasplain;

Returns the ASPLAIN representation of the parsed ASN

toasplain16

my $asplain = $asn->toasplain16;

Returns the ASPLAIN representation of the parsed ASN if the ASPLAIN representation is is less than or equal to 65535, else returns AS_TRANS

Use for compabability with 16 bit ASN systems.

toasdot

my $asdot = $asn->toasdot;

Returns the ASDOT representation of the parsed ASN. If the parsed ASN is ASPLAIN and less than or equal to 65535 then returns the ASPLAIN

toasdotplus

my $asdotplus = $asn->toasdotplus;

Returns the ASDOT+ representation of the parsed ASN.

FUNCTIONS

plaintodot

my $asdot = plaintodot($asn);

Returns the ASDOT representation of the ASN ($asn) If $asn is ASPLAIN and less than or equal to 65535 then returns the ASPLAIN (Assumes your ASN is in ASPLAIN format)

plaintodotplus

my $asdotplus = plaintodotplus($asn);

Returns the ASDOT+ representation of the ASN ($asn) (Assumes your ASN is in ASPLAIN format)

dottodotplus

my $asplain = dottodotplus($asn);

Returns the ASDOT+ representation of the ASN ($asn) (Assumes your ASN is in ASDOT format)

dottoplain

my $asplain = dottoplain($asn);

Returns the ASPLAIN representation of the ASN ($asn) (Assumes your ASN is in ASDOT format)

dottoplain16

my $asplain = dottoplain16($asn);

Returns the ASPLAIN representation of the ASN ($asn) if the ASPLAIN representation is is less than or equal to 65535, else returns AS_TRANS (Assumes your ASN is in ASDOT format)

dotplustodot

my $asdot = dotplustodot($asn);

Returns the ASDOT representation of the ASN ($asn) (Assumes your ASN is in ASDOT+ format)

dotplustoplain

my $asplain = dotplustoplain($asn);

Returns the ASPLAIN representation of the ASN ($asn) (Assumes your ASN is in ASDOT+ format)

dotplustoplain16

my $asplain = dotplustoplain16($asn);

Returns the ASPLAIN representation of the ASN ($asn) if the ASPLAIN representation is is less than or equal to 65535, else returns AS_TRANS (Assumes your ASN is in ASDOT+ format)

AUTHOR

David J. Freedman <lochii AT convergence DOT cx>

COPYRIGHT

Copyright (c) 2008 Convergence Inc. All rights reserved.

This program is free software; you can redistribute it and/or modify it under the terms as perl itself.

SEE ALSO

perl(1)