IPv6 for IXPs

Mirjam Kuehne wrote:

> Definition:
> 
> A physical network infrastructure (layer 2) operated by a single
> entity with the purpose to facilitate the exchange of Internet traffic
> between Internet service providers. The number of Internet Service
> providers connected should at least be three and there must be a clear
> and open policy for others to join.

I think this is as good a definition of an IXP as we will get.

> Addresses needed for other purposes (e.g. additional services provided
> to the members) should be assigned by upstream ISPs.

I still believe this principle compromises the operational neutrality
aspirations of any well-managed IXP (see my previous posting),
and it is very important as Randy proposes that there is an
alternative means for an IXP to get IPv6 space for these purposes
in its own right (e.g. as an LIR as per IPv4).

> Assignment size:
> 
> - a /48 in most cases
> - a /64 if it is known that there will only be one subnet
> (basically following the IAB recommendation)

Sounds plenty.
 
> Additional warning:
> 
> The RIRs should warn the IXP that it is strongly discouraged to
> announce the addresses and that they will likely not to be globally
> routable.

So long as this as a consequence of how the ISPs announce the space,
and not due to any property of (other than I guess prefix length),
or policy restrictions adhering to, the space itself, I don't have
any particular issue with this, and we'll look at encouraging our
customers to adopt good practice on peering mesh announcements.

Keith

http://www.xchangepoint.net/contact/keith/