[GLOBAL-V6] Re: up a few thousand meters

[Pekka Savola <pekkas@netcore.fi>]

On Tue, 12 Feb 2002, Daniel Karrenberg wrote:
> - V6 per-se does *not at all* solve the routing (table) problem
> 

That's true in a technical sense.

However, there are a few reasons why we, even though IPv6 does not solve 
the problem, _can_ solve it:

1) organizations, however large, can be represented by one "dot", a /48.  
   This enables us, at worst, to have O(organizations) routing table 
   entries, not O(organizations * average number of nodes per 
   organization).  The former is too big still, but it is still good news 
   and makes aggregation and address space estimations easier.

2) it's all new protocol -- not a win as such, but due to this, we can 
   _reinvent_ the routing system (within some restrictions) the way we
   see fit, based on earlier experience.

Let's not pretend 2) does not exist.  There are 6bone routing guidelines,
which have been happily adapted by production operators (sTLA) also; they
prevent most of the problems we're now facing with IPv4 global routing
table growth.

Why toss all of that aboard, pretending we cannot work around the routing
problem for now when moving to IPv6 (note: I didn't say IPv6 would
magically solve the problem!)?

-- 
Pekka Savola                 "Tell me of difficulties surmounted,
Netcore Oy                   not those you stumble over and fall"
Systems. Networks. Security.  -- Robert Jordan: A Crown of Swords

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