Just get them an F5 3DNS :) (or similar) Sorry for the lame joke, but this actually illustrates the exact reason why these types of solutions need to be investigated. Everyone running a commercial class site will need proper redundancy. Unless they all co-locate (which is actually the best thing they could do but many don't see the value) some acceptable solution needs to be created. We can argue that these DNS and related services prove to be taxing on backbone facilities till we're blue in the face. In liue of another solution, simple market demand will force us into these solutions. *********** REPLY SEPARATOR *********** On 3/13/00 at 6:01 PM Timothy Brown wrote:

I apologize in advance if this subject has been regurgitated. I would imagine it has, but a quick search of NANOG archives reveals nothing.

What is the "party line" among providers as regards to BGP route filtering? I have a customer with a /24 (grandfathered) who now seeks to multi-home. Is their /24 globally routable? There's no way they can justify anything less specific than a /22.

Are there any other solutions?

Regards, Tim

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------- Peter Van Oene Senior Systems Engineer UNIS LUMIN Inc. www.unislumin.com