Brian- I'm with you on this one... I've been doing this for 8 years now, and by all of the documentation and teaching by others that I've ever heard, MS Clients, just like any other Networking client, follows the Rule of if you have more than one DNS Server listed to query against... the client will only use the first one in the list.... unless it doesn't get ANY response to the query. If it doesn't, it goes to the next one in the list, and repeats the process, and so on for all servers listed. If a queried server responds, whether negative or postive, the DNS resolution process stops there. No ands, ifs, or buts about it.
Of course, I more or less just repeated what you said... but its the truth from my experience. Mark Odette II CCNA/.75CCNP/MCSE 2000, MCSE 4.0, A+ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Brian Hill Sent: Monday, May 13, 2002 10:21 PM To: [EMAIL PROTECTED] Subject: Re: DNS - Unicast or Broadcast? [7:44060] Patrick Ramsey wrote: > > windows clients will actualy send unicast to ALL listed dns > servers... Instead of quearying the first, timeout, second, > timeout, etc.... They just assume all will time out and send it > to all listed. but it is definately unicast. > > -Patrick Patrick, Unless you can back this up with a sniff or Q article, I am going to strongly disagree with this one. To my knowledge, windows clients actually just send to the first server listed. If that server NEVER responds, it sends to the second. But if that server responds negatively (i.e. "I can't find the host"), the client will never query any other servers, due to the fact that the other servers SHOULD (assuming root hints and forwarding are correctly configured) respond with the same answer. Brian Hill CCNP, CCDP, MCSE 2000 (Charter Member),MCSE+I (NT4.0), MCSA (Charter Member), MCP+I, MCP(21), Inet+, Net+, A+ Lead Technology Architect, TechTrain Author: Cisco, The Complete Reference http://www.alfageek.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=44164&t=44060 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
