On Mon, 25 Feb 2008, Hank Nussbacher wrote:
For us who actually have customers we care about, we probably find it
better for business to try to make sure our own customers can't announce
prefixes they don't own, but accept basically anything from the world that
isn't ours.
You are a distinct minority. My experience has shown that most ISPs don't
give a sh*t about filtering what their customers can announce so what has
happened, will continue to happen.
I've only dealt with a handful of the bigger networks, but every transit
BGP session I've ever been the customer role on has been filtered by the
provider. From memory and in no particular order, that's UUNet, Level3,
Digex, Intermedia, Global Crossing, Genuity, Sprint, Above.net, Time
Warner, C&W, MCI, XO, Broadwing, and a few smaller ones nobody's likely to
have heard of.
As an ISP providing transit, all of our customers get prefix-filtered.
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Jon Lewis | I route
Senior Network Engineer | therefore you are
Atlantic Net |
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