nanog mailing list archives
Re: Is multihoming hard? [was: DNS amplification]
From: Owen DeLong <owen () delong com>
Date: Wed, 20 Mar 2013 08:25:11 -0500
I don't know a single ISP that wants to throttle growth by not accepting additional customers, BGP speaking or not. (I do know several that want to throttle growth through not upgrading their links because they have a captive audience they are trying to ransom. But that is neither relevant to this discussion, not controversial - unless you are paid by one of those ISPs….)
Comcast Verizon AT&T Time Warner Cable Cox CenturyLink to name a few. Not one of them will run BGP with a residential subscriber.
And please don't reply with "then why can't I run BGP on my [cable|DSL|etc.] link?" Broadband providers are not trying to throttle growth by not allowing grandma to do BGP, and swapping to LISP or anything else won't change that.
Sure they are. If they weren't, it would be relatively straight forward to add the necessary options to DHCP for a minimal (accept default, advertise local) BGP configuration and it would be quite simple for CPE router manufacturers to incorporate those capabilities. The problem is BGP doesn't scale to that level and everyone knows it, so, we limit growth by not allowing it to be a possibility. You are right, however, LISP won't change that.
LISP is about seperating the role of the ISP (as routing provider) from the end user or content provider/consumer.I am unconvinced that is a good idea. At least using the definition of "end use" or "consumer" I frequently hear.
+1 However, a locator/id separation without map/encap is a desirable thing that could allow the routing system to scale better. Unfortunately, we failed to address this issue when designing IPv6. It will not get correctly solved without a revision to the header design. There is no will to change the packet header in the near future. We're having too much "fun" rolling out the current one. Owen
Current thread:
- Re: [c-nsp] DNS amplification, (continued)
- Re: [c-nsp] DNS amplification Dobbins, Roland (Mar 19)
- RE: [c-nsp] DNS amplification Adam Vitkovsky (Mar 20)
- Re: [c-nsp] DNS amplification Randy Bush (Mar 19)
- Re: [c-nsp] DNS amplification Arturo Servin (Mar 20)
- Re: [c-nsp] DNS amplification Aled Morris (Mar 20)
- Re: [c-nsp] DNS amplification Arturo Servin (Mar 20)
- Re: [c-nsp] DNS amplification David Conrad (Mar 20)
- Re: [c-nsp] DNS amplification Arturo Servin (Mar 20)
- Re: [c-nsp] DNS amplification Owen DeLong (Mar 20)
- Is multihoming hard? [was: DNS amplification] Patrick W. Gilmore (Mar 20)
- Re: Is multihoming hard? [was: DNS amplification] Owen DeLong (Mar 20)
- Re: Is multihoming hard? [was: DNS amplification] ML (Mar 20)
- Re: Is multihoming hard? [was: DNS amplification] Seth Mattinen (Mar 20)
- Re: Is multihoming hard? [was: DNS amplification] Joe Abley (Mar 20)
- Re: Is multihoming hard? [was: DNS amplification] Jared Mauch (Mar 20)
- Re: Is multihoming hard? [was: DNS amplification] Masataka Ohta (Mar 20)
- Re: Is multihoming hard? [was: DNS amplification] Owen DeLong (Mar 20)
- Re: Is multihoming hard? [was: DNS amplification] Valdis . Kletnieks (Mar 22)
- Re: Is multihoming hard? [was: DNS amplification] Owen DeLong (Mar 23)
- Re: Is multihoming hard? [was: DNS amplification] Jimmy Hess (Mar 23)
- Re: Is multihoming hard? [was: DNS amplification] Owen DeLong (Mar 23)