IPv4 vs IPv6 Comparison

[Patrick Morris]

Can anyone direct me to a reference which discusses, at a 
somewhat general level, the major differences between IPv4 and 
v6?  Probably a 20 or so page discussion would be helpful.

Also, any references which deal with the concepts of the 
hierarchical addressing scheme in IPv6?  I have been unable to 
find anything which explains high level concepts.  Rather, 
everything seems to go straight to the bits and bytes.  My brain 
only makes sense of bits and bytes after it understands the 
concepts.

Thanks!
---------------------------------------------------------
Patrick Morris - Manager, Sales Engineering
SAVVIS Communications Corporation
7777 Bonhomme - Suite 1501
St. Louis, MO 63105
(314)719-2453 phone
(314)719-2498 fax
(888)688-0190 pager

-----Original Message-----
From:	kuznet@ms2.inr.ac.ru [SMTP:kuznet@ms2.inr.ac.ru]
Sent:	Tuesday, September 08, 1998 1:18 PM
To:	Masaki Hirabaru
Cc:	6bone@ISI.EDU
Subject:	Re: routing policy questions

Hello!

> Recently, I established a tunnel with an European site that 
has a
> /48 assigned from a pTLA (in US but not me) through some 
transit
> site.
>
> I'd like to ask people on 6bone who are involved in 
multi-homing
> about how you implement it (keeping the 6bone routing policy).

It is pretty clear that this 6bone rule is in serious 
contradiction
with bgp4 paradigm and with concept of AS numbers. Read, with 
reality 8)

Probably, I do not understand something, but it is impossible
to inhibit exporting shorter prefixes without getting rid of
these concepts.

Suppose, my pTLA is collection of 3 AS. 2 of them have tunnels.
If I do aggregation, it will not only make paths much longer,
I will be forced to export aggregate with different AS paths!!!

I am sorry, I prefer to violate any rules, only to avoid BGP 
breaking.

Alexey Kuznetsov