[ppml] "Recommended Practices" procedure
tme at multicasttech.com
Fri Jun 30 11:08:32 EDT 2006
On Jun 30, 2006, at 10:49 AM, Scott Leibrand wrote:
> On 06/30/06 at 10:15am -0400, Marshall Eubanks
> <tme at multicasttech.com> wrote:
>> On Jun 30, 2006, at 9:38 AM, Scott Leibrand wrote:
>>> No, I'm not making that assumption. I'm saying that only your
>>> transit-free transit providers need to exchange your route.
>>> Everyone else
>> How do I determine which of my transit providers are transit-free ?
> Ask them? Ask a trusted third party? I've never had any problem
> getting this information from my transit providers.
In my experience, claims to be "Tier 1" are pretty common. Some I
I know aren't really true. And, like you, I think I know who to ask
if I need to know more.
More seriously, I was trying to point out that ARIN policy needs to
avoid the creation
of a "private club" model, where you can't do things unless you know
the right people at the right level.
>> What do I do if one fine day no provider available to me is transit-
>> free ?
> Then perhaps you should start using PI space. If you can't, it's a
> problem to solve, but still doesn't require cooperation of anyone
> not receiving money (directly or indirectly) from you.
Oh, then I misunderstood and must apologize. I thought you were
proposing this _instead_ of PI space for small multi-homers. If you
are saying that this is something that you can do _as an
additional option_, then I have no trouble with it.
> Say you buy your transit from me. I recommend you get PI space,
> but you
> don't qualify, so I give you a /48 out of my /32, and announce both
> to all of my transit providers (who accept them, because I'm paying
> to do so). You also run BGP with another tier 2 ISP. I exchange
> your /48
> with that ISP, either via a peering link or via a mutual transit
> If there are no peering links or mutual transit providers, then I
> must ask
> my transit provider to accept your /48 from your ISP's transit
> and vice versa. Other transit-free NSPs, which don't have either
> me or
> your other ISP as customers, will send your traffic to one of my
> providers based on my /32, then on to me or your ISP based on your /
> If either of your ISP links (or the routers terminating them) go down,
> then your traffic will be passed along to your other ISP.
> The only failure scenario where you lose connectivity is if my network
> goes completely offline. If you believe the likelihood of such an
> is higher than your risk tolerance, then you should use PI space,
> or get
> your PA space from someone with a network less likely to
More information about the ARIN-PPML