Take a network trace on the AD DNS server and look at the timestamps between the receipt of the request from your client and the transmission of the reply. You'll be able to see each hop.
You don't have much of a choice considering all your clients need AD's DNS info, though... Thanks, Brian Desmond br...@briandesmond.com<mailto:br...@briandesmond.com> c - 312.731.3132 From: Stephen Wimberly [mailto:riverside...@gmail.com] Sent: Saturday, January 29, 2011 5:57 PM To: NT System Admin Issues Subject: DNS latency I have an Active Directory domain, which means I have my own DNS environment. For any name resolution that is not in my domain, my DNS server must pass the request up to our ISP for resolution. Is there a way to measure how long the added delay might be to gain a reply? In other words how much faster would it be if I were pointing directly at the ISP DNS servers, not my own that forward? Thanks In Advance! ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe ntsysadmin