Re: What is BCP re De-Aggregation: strict filtering /48s out of /32 RIR minimums.

[William Herrin <bill () herrin us>]

On Wed, Nov 14, 2012 at 12:08 PM, Ben S. Butler
<Ben.Butler () c2internet net> wrote:
> Yes, nice.  But... It does not address the case when this is
> not the ISPs customers but the ISP (read content provider)
> that operates globally but without a network interconnecting
> their routers.

Hi Ben,

That case is covered by things like ARIN's multiple discrete networks
policy which permit an ISP /32 or end-user /48 for _each_ distinct
network. There are plenty of addresses in IPv6. You should be break up
a /32 for traffic engineering purposes, not for the sake of handling
multiple disconnected sites. And when exercising TE, you can offer a
covering route and expect the network as a whole to still function
regardless of other folks' suballocation filtering.

Regards,
Bill Herrin



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