nanog mailing list archives
RE: How common is lack of DNS server diversity?
From: Roeland Meyer <rmeyer () mhsc com>
Date: Sat, 27 Jan 2001 01:24:34 -0800
From: Sean Donelan [mailto:sean () donelan com] Sent: Friday, January 26, 2001 7:01 PM Mice and Men found that 38% of the .COM domains surveyed had all their name servers on the same subnet. And 75% had one or more configuration errors. http://www.menandmice.com/dnsplace/healthsurvey.html
Distribution requirements,of root name servers, is dependent on where in the tree you live. dot root servers should be spread out, as they are authoritative for everything. TLD root servers should also be spread out, they are authoritative for many things. SLD root servers need not be spread out so much, they are authoritative for few things. 3LD root servers don't need to even leave their AS, if the AS is down the servers, they are authoritive for, are probably also down. 4LD root servers ... who cares? More interestingly, how many root servers allow recursive lookup?
Current thread:
- Re: How common is lack of DNS server diversity?, (continued)
- Re: How common is lack of DNS server diversity? Greg A. Woods (Feb 24)
- Re: How common is lack of DNS server diversity? Shawn McMahon (Feb 24)
- Re: How common is lack of DNS server diversity? John Payne (Feb 24)
- Re: How common is lack of DNS server diversity? Charles Scott (Feb 24)
- Re: How common is lack of DNS server diversity? Brian (Feb 24)
- Re: How common is lack of DNS server diversity? Charles Scott (Feb 24)
- Re: How common is lack of DNS server diversity? deeann mikula (Feb 24)
- Re: How common is lack of DNS server diversity? Eric A. Hall (Feb 24)
- Re: How common is lack of DNS server diversity? Charles Scott (Feb 24)
- RE: How common is lack of DNS server diversity? Joshua Goodall (Feb 24)
- Re: How common is lack of DNS server diversity? bmanning (Feb 24)
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- Re: How common is lack of DNS server diversity? Jay R. Ashworth (Feb 24)
- Re: How common is lack of DNS server diversity? Shawn McMahon (Feb 24)
- Re: How common is lack of DNS server diversity? Havard Eidnes (Feb 24)