Re: New AS request in another country
- Date: Wed, 16 Aug 2000 13:29:10 +0300 (EET DST)
- Organization: Saunalahti Oyj
On Wed, 16 Aug 2000, Berislav Todorovic wrote:
> A rather better approach is to try to plan address space assignment within
> the current allocation smarter. Say, if xx.foo was allocated 172.16/16 in the
> past and it wants to start its business in the country YY, then they may
> "reserve" a small /20 within that allocation (say 172.16.240/20) and start
> assigning addresses to YY customers from that /20, while using the rest of
> the /16 for XX customers.
This is rather difficult for the new registries who do not have many /16:s
of free address space. This is due to the requirement of 80% fill-up of
an allocation before a new allocation can be obtained. Basically,
dividing a /16 into a /17 and 8 per-country /20:s would be optimal from
the routing point of view: the /16 could be presented as an aggregate
to transit or to non-European peers.
However, if business grows at different speeds in different countries, and
one is only able to allocate /21 in half of the countries, the fill-up
ratio will remain at 75%, making it impossible to get a new allocation and
forcing a renumbering.
Thus, it seems that the current policies force one to register several
LIRs, and to request distinct non-aggregatable address spaces. This leads
to explosion of routing tables. Is this really what we want?
(The alternative would be to change policies to allow a LIR to have
several open allocations when the open allocations would be under
different routing policies.)
- Kai Keindnen
Saunalahti Oyj
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