[ppml] Policy Proposal 2005-9: 4-Byte AS Number

[Howard, W. Lee]

> -----Original Message-----
> From: ppml-bounces at arin.net [mailto:ppml-bounces at arin.net] On 
> Behalf Of Bill Darte
> Sent: Tuesday, December 20, 2005 9:17 AM
> To: 'Michael.Dillon at btradianz.com'; ppml at arin.net
> Subject: Re: [ppml] Policy Proposal 2005-9: 4-Byte AS Number
> 
> According to Wikipedia...
> A unique AS number (or ASN) is allocated to each AS for use 
> in BGP routing.
> With BGP, AS numbers are important because the ASN uniquely 
> identifies each
> network on the internet.  AS numbers are assigned by the 
> IANA, which also
> allocate IP addresses, to regional internet registries (RIRs) 
> in blocks. The
> local RIR then assigns an AS number to an entity from the 
> block assigned by
> the IANA. Entities wishing to receive an ASN must complete 
> the application
> process of their local RIR and be approved before being 
> assigned an ASN.
> 
> Note that they refer to an IP address as an entity...

Er, I read "entities" as meaning "persons or organizations,"
i.e., the one who fills out the ASN application.  An ASN is
assigned to a person or organization, not to an IP address.

An IP address is an entity in the same sense that {5} is an
entity.

Lee

> 
> 
> bd
> 
> 
> > When the dot notation was introduced for IP addresses,
> > they marked an important bit boundary that was a fundamental 
> > part of the IP address. The 32 bit identifier was divided 
> > into a NETWORK portion and a HOST portion. This division was 
> > done on one of three 8-bit boundaries depending on address 
> > class and therefore there are 3 dots in an IP 
> > address marking the boundaries.
> > 
> > AS numbers are simple integers with no such internal
> > structure.
> > 
> > --Michael Dillon
> > 
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