nanog mailing list archives
RE: DNS availability
From: Roeland Meyer <rmeyer () mhsc com>
Date: Fri, 26 Jan 2001 23:56:38 -0800
From: richb () pioneer ci net [mailto:richb () pioneer ci net] Sent: Friday, January 26, 2001 8:24 AM Christian Nielsen <cnielsen () nielsen net> wrote:ultradns does this and has a great product.Interesting to read the faq on UltraDNS's website:Q. I read that your service is supposed to make use ofseveral serversall over the world, but you only give people two server addresses to provide to their registrar. How do I make use of all the other servers?A. The two server addresses you supply your registrar whenyou set upa domain on the Managed DNS Service system are actually 'virtual' addresses that will route to the best possible server onour network,based on a number of factors. This highly intelligentmechanism allowsyou to achieve full redundancy and reliability with only two name server addresses actually listed. In fact, if the registrar would allow you to do so, you could achieve the same level of reliability with only one name server address.
Or maybe there have been a few extensions to BGP which I haven't learned about...;-)
It's not BGP! see www.3dns.com and www.f5.com for similar technology. As well as a clue or two. You might also ask yourself the difference between packet routing and query routing. While you're at it, better also ask how those wizards make cluster load balancing work. "Sufficiently advanced technology is indistinguishable from magic, to the uninitiated" paraphrased from Arthur C. Clark
Current thread:
- Re: DNS availability richb (Feb 24)
- Re: DNS availability Rodney Joffe (Feb 24)
- Re: DNS availability Bill Woodcock (Feb 24)
- <Possible follow-ups>
- Re: DNS availability Troy Corbin (Feb 24)
- Re: DNS availability Bill Woodcock (Feb 24)
- RE: DNS availability Roeland Meyer (Feb 24)
- Message not available
- Re: DNS availability Jay R. Ashworth (Feb 24)
- Message not available