Can anyone help me out? John 6/18/2007 9:18:00 PM Hi all, We have two DNS servers and users get two DNS servers IP from DHCP. If users go to www.microsoft.com, which DNS server IP do users use? users use both or one of them? If I do sniffering, should I see both IP when users lauch web site or one of them? Windows 2003 R2 Thank you.

Re: Can anyone help me out? "simon via WinServerKB.com" <u11670[ at ]uwe> 6/18/2007 10:15:09 PM Hi If you mean the prefferred and alternative addresses then AFAIK they will always use their preferred server unless for some reason that fails to respond with a specified time out period (dont know what that is though or if its configurable) I would assume you should only see one DNS server (the preferred) responding in a network trace(assuming it didnt time out) why is this not the result you get? Simon John wrote: [Quoted Text] >Hi all, > >We have two DNS servers and users get two DNS servers IP from DHCP. If >users go to www.microsoft.com, which DNS server IP do users use? users use >both or one of them? If I do sniffering, should I see both IP when users >lauch web site or one of them? Windows 2003 R2 > >Thank you. -- Message posted via http://www.winserverkb.com

Re: Can anyone help me out? John 6/19/2007 1:43:03 PM [Quoted Text] > If you mean the prefferred and alternative addresses YES. But, when I do a trace, it show two DNS servers IP for query www.microsoft.com. Is this somethng wrong with it? We experienced internet page loading slowly. Could it be a issue? "simon via WinServerKB.com" wrote: > Hi > > If you mean the prefferred and alternative addresses then AFAIK they will > always use their preferred server unless for some reason that fails to > respond with a specified time out period (dont know what that is though or if > its configurable) > > I would assume you should only see one DNS server (the preferred) responding > in a network trace(assuming it didnt time out) why is this not the result you > get? > > Simon > > > > John wrote: > >Hi all, > > > >We have two DNS servers and users get two DNS servers IP from DHCP. If > >users go to www.microsoft.com, which DNS server IP do users use? users use > >both or one of them? If I do sniffering, should I see both IP when users > >lauch web site or one of them? Windows 2003 R2 > > > >Thank you. > > -- > Message posted via http://www.winserverkb.com > >

Re: Can anyone help me out? "Herb Martin" <news[ at ]learnquick.com> 6/19/2007 2:42:17 PM "John" <John[ at ]discussions.microsoft.com> wrote in message news:79CDAB74-1024-4F30-AE1A-7FC4E0DEC49B[ at ]microsoft.com... [Quoted Text] >> If you mean the prefferred and alternative addresses > YES. > > But, when I do a trace, it show two DNS servers IP for query > www.microsoft.com. Is this somethng wrong with it? If one is failing (or slow) it will show the alteranate. > We experienced internet page loading slowly. Could it be a issue? Probably not, since for the page to load DNS much be working but it could theorectically be working SLOWLY and thus making pages load slowly. Show us your UNEDITED text from "IPconfig /all" for a machine with the problem, and perhaps the full output of that NSLookup command that troubled you. -- Herb Martin, MCSE, MVP http://www.LearnQuick.Com (phone on web site) > "simon via WinServerKB.com" wrote: > >> Hi >> >> If you mean the prefferred and alternative addresses then AFAIK they will >> always use their preferred server unless for some reason that fails to >> respond with a specified time out period (dont know what that is though >> or if >> its configurable) >> >> I would assume you should only see one DNS server (the preferred) >> responding >> in a network trace(assuming it didnt time out) why is this not the result >> you >> get? >> >> Simon >> >> >> >> John wrote: >> >Hi all, >> > >> >We have two DNS servers and users get two DNS servers IP from DHCP. If >> >users go to www.microsoft.com, which DNS server IP do users use? users >> >use >> >both or one of them? If I do sniffering, should I see both IP when >> >users >> >lauch web site or one of them? Windows 2003 R2 >> > >> >Thank you. >> >> -- >> Message posted via http://www.winserverkb.com >> >>

Re: Can anyone help me out? John 6/19/2007 3:08:01 PM Thank you very much. I just want to rule out which DNS servers could cause internet page loading slowly. Please see the result as you requested. C:\Documents and Settings\>ipconfig /all Windows IP Configuration Host Name . . . . . . . . . . . . : testcomputer Primary Dns Suffix . . . . . . . : eu.test.local Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : eu.test.local eu.test.local test.local Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : eu.test.local Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network Connecti on Physical Address. . . . . . . . . : 00-03-47-C6-6F-57 Dhcp Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IP Address. . . . . . . . . . . . : 192.168.90.9 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . :192.168.90.252 DHCP Server . . . . . . . . . . . : 192.168.10.111 DNS Servers . . . . . . . . . . . : 192.168.10.111 192.168.10.112 Primary WINS Server . . . . . . . : 192.168.10.111 Lease Obtained. . . . . . . . . . : Monday, June 18, 2007 5:00:17 PM Lease Expires . . . . . . . . . . : Monday, June 25, 2007 5:00:17 PM C:\Documents and Settings>nslookup -qtype=all microsoft.com Server: testdns1.eu.test.local Address: 192.168.10.111 Non-authoritative answer: microsoft.com internet address = 207.46.232.182 microsoft.com internet address = 207.46.197.32 microsoft.com MX preference = 10, mail exchanger = maila.microsoft.com microsoft.com MX preference = 10, mail exchanger = mailb.microsoft.com microsoft.com MX preference = 10, mail exchanger = mailc.microsoft.com mailb.microsoft.com internet address = 205.248.106.30 mailb.microsoft.com internet address = 131.107.115.215 mailc.microsoft.com internet address = 131.107.115.214 mailc.microsoft.com internet address = 205.248.106.32 maila.microsoft.com internet address = 205.248.106.64 maila.microsoft.com internet address = 131.107.115.212 "Herb Martin" wrote: [Quoted Text] > > "John" <John[ at ]discussions.microsoft.com> wrote in message > news:79CDAB74-1024-4F30-AE1A-7FC4E0DEC49B[ at ]microsoft.com... > >> If you mean the prefferred and alternative addresses > > YES. > > > > But, when I do a trace, it show two DNS servers IP for query > > www.microsoft.com. Is this somethng wrong with it? > > If one is failing (or slow) it will show the alteranate. > > > We experienced internet page loading slowly. Could it be a issue? > > Probably not, since for the page to load DNS much be working but > it could theorectically be working SLOWLY and thus making pages > load slowly. > > Show us your UNEDITED text from "IPconfig /all" for a machine with > the problem, and perhaps the full output of that NSLookup command > that troubled you. > > > -- > Herb Martin, MCSE, MVP > http://www.LearnQuick.Com > (phone on web site) > > > "simon via WinServerKB.com" wrote: > > > >> Hi > >> > >> If you mean the prefferred and alternative addresses then AFAIK they will > >> always use their preferred server unless for some reason that fails to > >> respond with a specified time out period (dont know what that is though > >> or if > >> its configurable) > >> > >> I would assume you should only see one DNS server (the preferred) > >> responding > >> in a network trace(assuming it didnt time out) why is this not the result > >> you > >> get? > >> > >> Simon > >> > >> > >> > >> John wrote: > >> >Hi all, > >> > > >> >We have two DNS servers and users get two DNS servers IP from DHCP. If > >> >users go to www.microsoft.com, which DNS server IP do users use? users > >> >use > >> >both or one of them? If I do sniffering, should I see both IP when > >> >users > >> >lauch web site or one of them? Windows 2003 R2 > >> > > >> >Thank you. > >> > >> -- > >> Message posted via http://www.winserverkb.com > >> > >> > > >

Re: Can anyone help me out? "Herb Martin" <news[ at ]learnquick.com> 6/19/2007 4:50:58 PM "John" <John[ at ]discussions.microsoft.com> wrote in message news:7F616CF9-C0E0-48CA-B3AD-25DC5206BA4F[ at ]microsoft.com... [Quoted Text] > Thank you very much. I just want to rule out which DNS servers could > cause > internet page loading slowly. > Please see the result as you requested. > > C:\Documents and Settings\>ipconfig /all > > Windows IP Configuration > > Host Name . . . . . . . . . . . . : testcomputer > Primary Dns Suffix . . . . . . . : eu.test.local > Node Type . . . . . . . . . . . . : Hybrid > DNS Suffix Search List. . . . . . : eu.test.local > eu.test.local No point in putting eu.text.local in the explicit search list -- just use the setting for searching parents and you will get it and test.local (once each.) (Not a serious problem, though it might slow you a LITTLE.) > test.local > Connection-specific DNS Suffix . : eu.test.local No reason for a connection specific suffix since you have already set this CORRECTLY in the System Control Panel as the Primary DNS suffix -- leave this blank. (Not a serious problem though.) > Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network > Connecti > on > Physical Address. . . . . . . . . : 00-03-47-C6-6F-57 > Dhcp Enabled. . . . . . . . . . . : Yes > Autoconfiguration Enabled . . . . : Yes > IP Address. . . . . . . . . . . . : 192.168.90.9 > Subnet Mask . . . . . . . . . . . : 255.255.255.0 > Default Gateway . . . . . . . . . :192.168.90.252 > DHCP Server . . . . . . . . . . . : 192.168.10.111 > DNS Servers . . . . . . . . . . . : 192.168.10.111 > 192.168.10.112 As long as 111 and 112 can BOTH resolve all internal (and external) names the above is correct. > C:\Documents and Settings>nslookup -qtype=all microsoft.com You don't need to type anything after the "-q", or you can use the switch -type= (Not a serious problem though.) > Server: testdns1.eu.test.local > Address: 192.168.10.111 > > Non-authoritative answer: > microsoft.com internet address = 207.46.232.182 > microsoft.com internet address = 207.46.197.32 > microsoft.com MX preference = 10, mail exchanger = maila.microsoft.com > microsoft.com MX preference = 10, mail exchanger = mailb.microsoft.com > microsoft.com MX preference = 10, mail exchanger = mailc.microsoft.com > > mailb.microsoft.com internet address = 205.248.106.30 > mailb.microsoft.com internet address = 131.107.115.215 > mailc.microsoft.com internet address = 131.107.115.214 > mailc.microsoft.com internet address = 205.248.106.32 > maila.microsoft.com internet address = 205.248.106.64 > maila.microsoft.com internet address = 131.107.115.212 The above looks perfectly normal. You asked for everything (all) about microsoft.com and so resolved the A records, MX, and NS records with this name. -- Herb Martin, MCSE, MVP http://www.LearnQuick.Com (phone on web site)