Re: [Autoconf] Subnet definition

Hello Charlie, all, 

> -----Original Message-----
> From: autoconf-bounces@ietf.org 
> [mailto:autoconf-bounces@ietf.org] On Behalf Of Charles E. Perkins
> Sent: donderdag 20 november 2008 7:44
> To: Teco Boot
> Cc: autoconf@ietf.org
> Subject: Re: [Autoconf] Subnet definition
> 
> 
> Hello Teco,
> 
> Teco Boot wrote:
> >> A "subnet" is a contiguous range of IP addresses that admits a 
> >> routing prefix.
> >>     
> >
> > Why not using the term routing prefix for a routing prefix?
> >   
> 
> There are two important answers to this question.
> 1. A subnet is something that needs definition so that we
>     can avoid confusion.  No one has been getting confused
>     about what a routing prefix is supposed to mean.
> 2. A subnet is a collection of network nodes, and a routing
>     prefix is a number and a length.  But you correctly point
>     out that the definition should probably be improved.
> 
> Perhaps the following definition is better:
>    A "subnet" is a collection of network nodes whose addresses are
>    all within a contiguous range of IP addresses that admits a routing
>    prefix.

According to draft-iab-ip-model-evolution-01 by Dave Thaler: 'A "subnet"
in the IP service model refers to the topological area within which
addresses from the same subnet prefix are assigned to interfaces.'

Don't see much wrong with that definition.

Ronald
> 
> Anyway, even if the elements of two sets have a natural 
> one-to-one correspondence, we can still usefully consider and 
> understand their differences.
> 
> 
> 
> >
> >   
> >> A "subnet router" is a router that provides access to any 
> node that 
> >> uses one of the contiguous IP addresses belonging to the 
> range of the 
> >> subnet.
> >>     
> >
> > If we stick on MANET, we discuss only router related topics, agreed?
> >
> > And routers do provide routes to destinations, OK?
> >   
> 
> It seems to me that there has been a lot of confusion about 
> routers and subnets, and I think we could go forward faster 
> if we could manage to resolve that confusion.
> 
> 
> Sometimes you have to enlarge the field of view in order to 
> see the elephant in the room (to mix metaphors :-)
> 
> Regards,
> Charlie P.
> 
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