nanog mailing list archives
Re: verizon.net and other email grief
From: Iljitsch van Beijnum <iljitsch () muada com>
Date: Thu, 16 Dec 2004 14:27:52 +0100
On 16-dec-04, at 12:52, Daniel Karrenberg wrote:
That's definitely true, though it can be used successfully -- if there's a very reliable kill-switch to withdraw the advertisement in a moment, or somekind of fallback mechanism in place to handle gross failures.
Using this as the *only* remedy for unavailability of an anycast instance is insufficient given the speed at which bad news travels in BGP. You wantto have the service available at multiple addresses with each of those engineered as differently as possible.
And that's exactly why UltraDNS' treatment of .org is evil. I really don't understand why people with .org domains aren't complaining louder about this.
There are also other risks associated with anycast. See discussions on the IETF list earlier this year: about anycast + per packet load balancing ("[dnsop] Re: Root Anycast (fwd)", early october) and about root anycast ("13 Root Server Limitation", may).
Current thread:
- Re: verizon.net and other email grief, (continued)
- Re: verizon.net and other email grief Krzysztof Adamski (Dec 10)
- Re: verizon.net and other email grief Crist Clark (Dec 10)
- Re: verizon.net and other email grief Jeffrey I. Schiller (Dec 10)
- Re: verizon.net and other email grief Rich Kulawiec (Dec 12)
- Re: verizon.net and other email grief Simon Waters (Dec 13)
- Re: verizon.net and other email grief Suresh Ramasubramanian (Dec 13)
- Anycast reliability (was: Re: verizon.net and other email grief) Steve Gibbard (Dec 13)
- Re: Anycast reliability (was: Re: verizon.net and other email grief) Joe Abley (Dec 13)
- Re: verizon.net and other email grief Todd Vierling (Dec 14)
- Re: verizon.net and other email grief Daniel Karrenberg (Dec 16)
- Re: verizon.net and other email grief Iljitsch van Beijnum (Dec 16)
- Re: verizon.net and other email grief just me (Dec 16)
- Re: verizon.net and other email grief Iljitsch van Beijnum (Dec 16)
- Re: verizon.net and other email grief Steve Gibbard (Dec 16)
- Re: verizon.net and other email grief Joe Maimon (Dec 16)
- Re: verizon.net and other email grief Bill Woodcock (Dec 16)
- Dampening considered harmful? (Was: Re: verizon.net and other email grief) Jared Mauch (Dec 16)
- Re: Dampening considered harmful? (Was: Re: verizon.net and other email grief) Jerry Pasker (Dec 16)
- Re: Dampening considered harmful? (Was: Re: verizon.net and other email grief) Iljitsch van Beijnum (Dec 16)
- Re: Dampening considered harmful? (Was: Re: verizon.net and other email grief) Jared Mauch (Dec 16)
- Re: Dampening considered harmful? (Was: Re: verizon.net and other email grief) Jared Mauch (Dec 16)