troubleshooting Question

DNS problems when shutting down old DC/DNS server temporarily.

Avatar of Zee
ZeeFlag for United States of America asked on
DHCPDNSNetworking* domain controller
16 Comments2 Solutions154 ViewsLast Modified:
Environment:

2008 FFL/DFL - 3 DCs

-HOMEDC01 - 2008 SP2 - DNS, GC

-HOMEPDC -  2008 R2 SP1 - FSMO, DHCP, DNS, WINS, GC

-HOMESDC (VM) -  2016 - DNS, GC

IPV6 enabled on all per articles found online.

DC01 has been on the network for years and did everything before.  Then I brought up PDC a few years ago and transferred over all roles from DC01.  2 weeks ago I brought up SDC and set it up with DNS.  Everything looks to be in order and the plan was to demote DC01 and retire it.  I shut down DC01 for a few days and all of a sudden we started experiencing extremely slow loading times for any webpages.  I brought it back up and everything went back to normal.

I made the necessary adjustments in DHCP to only provide PDC and SDC to clients for DNS.

I ran dcdiag /test:DNS /DNSALL /e /v to see whats going on and the only thing I can see is that root hints only seem to be showing up on DC01 in the output.  I check DNS on PDC and SDC and they both have them, so not sure why they show up for only one server in the output.  Is that my problem?  What am I missing? (see attached output run from SDC, I also ran it on the other 2)

When I had DC01 off, before turning it back on, I ran nslookup and got major delays/time-outs the first time around but then would get a response eventually.  Tried clearing cache on both PDC and SDC and re-registering both.  No change.

Any direction or insight would be greatly appreciated.  TIA
DCDIAG-DNSV.txt
ASKER CERTIFIED SOLUTION
Darrell Porter
Enterprise Business Process Architect

Our community of experts have been thoroughly vetted for their expertise and industry experience.

Join our community to see this answer!
Unlock 2 Answers and 16 Comments.
Start Free Trial
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 2 Answers and 16 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros