Thanks for all the responses...learned a thing or two ;-) What I was basically fishing for was whether using periods was acceptable practice, frowned upon, or discretionary.
Thanks... Vyto > -----Original Message----- > From: bind-users-bounces+vyto=fnal....@lists.isc.org [mailto:bind- > users-bounces+vyto=fnal....@lists.isc.org] On Behalf Of Barry Margolin > Sent: Tuesday, February 01, 2011 1:57 AM > To: comp-protocols-dns-b...@isc.org > Subject: Re: dotted hostname is bad IMO > > In article <mailman.1600.1296530179.555.bind-us...@lists.isc.org>, > p...@mail.nsbeta.info wrote: > > > given the domain name of "126.com", and given an A RR in its zone is: > > > > s1.s2.s3 IN A 11.22.33.44 > > > > OK when a dns cache query for s1.s2.s3.126.com the first time, it > will > > follow the logic: > > > > #1, s1.s2.s3.126.com has NS RR in cache? (no) > > #2, s2.s3.126.com has NS RR in cache? (no) > > #3, s3.126.com has NS RR in cache? (no) > > #4, 126.com has NS RR in cache? (yes most time, since 126.com is a > famous > > domain). > > #5, Goto 126.com's NS fetch the result. > > > > The process is complicated. > > But if the hostname is "s1-s2-s3.126.com", what will the dns cache do > by > > the first query? it will just do: > > > > #1, 126.com has NS RR in cache? (yes) > > #2, go there fetching the reqult. > > > > It's much simple and fast. > > > > So I dont think dotted hostname is good pratical. > > I don't think it's something you need to worry about. DNS servers > organize their cache data structures to make steps 1-4 easy to perform > all at once. > > Time to pull out your copy of Knuth "Sorting and Searching". > > -- > Barry Margolin, bar...@alum.mit.edu > Arlington, MA > *** PLEASE don't copy me on replies, I'll read them in the group *** > _______________________________________________ > bind-users mailing list > bind-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/bind-users _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users