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Re: PI space and colocation
- From: Patrick W. Gilmore
- Date: Thu Jan 19 15:20:58 2006
On Jan 19, 2006, at 3:02 PM, Pete Templin wrote:
First: Customer is probably not already doing BGP, since they are
single homed to ISP A. When they connect to me, if they honestly
plan to dump ISP B ("you" :), then they probably won't want to go
through the hassle of setting up BGP. Of the literally millions of
"customers" in the world, there are only a few thousands (say, on the
order of 0.1%) who want or do BGP.
Patrick W. Gilmore wrote:
OK, let's try a similar but different scenario. Customer has ISP
A, adds ISP B ("you"). Customer intends to disconnect from ISP A.
Assuming the customer told you, do you require the customer to
start their connection with you as a private AS, do you require the
customer to re-AS-number later, or do you assume the customer will
Is it a reasonable alternative to establish a BGP connection with
theIt is technical feasible, but I don't think 'reasonable'. Stub
ASes are pollution on the 'Net.
provider over ethernet?
Assuming they tell you their plans, why wouldn't you rather just
originate their prefixes and static route to them? They can be multi-
originated for a while, doesn't hurt anything. Certainly better than
adding superfluous info into the global table permanently.
Easier for you, easier for them, and better for the Internet. Why
wouldn't you do it?
And what if the customer doesn't tell you that they're intending to
leave ISP A? Do you police this, and if so how regularly?
Of course you should police it, but it ain't the end of the world.
How often? How about when you get around to it, or maybe when
someone notifies you?
I'm not suggesting stub ASes should be disallowed by law. It's just
when someone asks, why wouldn't you suggest not doing it? If they
customer screams, well, they're paying you (or someone else if you
don't do it), so I guess you kinda have to do it.
I'm confused at the few (three, if I include you) people who are
questioning this. Are any of you honestly advocating stub ASNs and
other completely useless info should be encouraged in the global table?
(And yes, Patrick, IKYNAI. We'll pretend for the moment.)
Doesn't stop me from commenting. :-)