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[rpd] proposed policy: reservation of resources for IXPs

Mark Elkins mje at
Fri Oct 31 09:15:06 UTC 2014

I like the proposal. I think the adjacent /24 also makes great sense.
JINX is up to 79 addresses. ( - summary at the
I expect that once JINX is extended into Terraco, this number will go up
a fair bit.

On Thu, 2014-10-30 at 14:03 -0500, McTim wrote:
> All,
> On Thu, Oct 30, 2014 at 12:59 PM, David Huberman
> <David.Huberman at> wrote:
> > Hello,
> >
> > In regard to the proposed policy, "Resource Reservation for Internet Exchange Points", I have two comments:
> >
> > 1) I support the policy as written.
> >
> > 2) I ask the community for input on a separate policy proposal I would like to make, which is related.
> >
> > One of the lessons we've learned over 20+ years of operating public IXes is that the worst thing that can happen to an IX is to grow so big that it outgrows its peering fabric /24.  Renumbering a peering fabric is a nightmare scenario.  It is preventable by having allocation policies which keep successful IXes in mind.
> >
> > I propose, therefore, text which directs AFRINIC staff to:
> >
> >   - issue no less than a /24 to each IX peering fabric
> >   AND
> >   - either reserve the adjacent /24 so the /24 can grow to a /23 in the case where the IX is successful; or
> >   - issue the /24s sparsely (using the bisection method) to ensure the most number of /24s can grow into /23s over time.
> >
> > By carefully issuing /24s on /23 boundaries, it allows the (relatively few) IXes that will outgrow a /24 to easily move into a /23 with the same starting IP address, which makes it easy for the participants at the exchange.
> One would hope that procedure would dictate this, but I see no reason
> not to include it in the policy text if the authors are willing.

Mark James ELKINS  -  Posix Systems - (South) Africa
mje at       Tel: +27.128070590  Cell: +27.826010496
For fast, reliable, low cost Internet in ZA:
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