Re: [RAM] IPv6 /32 to /48 prefixes and Tree-Bitmap FIB speed

On 2007-07-20 10:21, Per Heldal wrote:
> On Fri, 2007-07-20 at 12:20 +1000, Robin Whittle wrote:
>> Thanks for answering my questions about /48s and for pointing me
>> to the guidelines which some or many people follow - Gert
>> Doering's page:
>>
>>   http://www.space.net/~gert/RIPE/ipv6-filters.html
>>
> 
> In the absence of scalable IDR and route-certificates you'll also find
> people using more strict filters in an attempt to achieve operational
> stability. Such filters aim to keep the maximum numbers of prefixes
> within the capacity of available hardware. Thus, if a registry allocates
> blocks out of e.g. a /23 only a small fraction of that /23 may initially
> be accepted, especially if it is used for PI /48s. The current v6
> routing-table may be small, but I'm sure attitudes will change as more
> people realise the potential impact on their infrastructure as it
> becomes increasingly common to operate dual-stack networks.

Exactly, and a DFZ with ten million /48s seems to be an unlikely
end-point, which is why we are here, I thought.

    Brian

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