We are experiencing an odd situation, our DNS/domain controllers keep losing there ability to connect to the root hint servers. This lasts for about 5 minutes and happens a few time everyday.
We have hopped on the DNS server while this is happening and have opened a command prompt and were able to successfully ping the root hint servers manually from the DNS servers so we know if is not a internet connectivity issue.
We ran a dcdiag during the event and saw that the DNS servers were able to connect to each other but they could not connect to the root hint servers.
DNS server: 8.8.4.4 (<name unavailable>)
9 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 8.8.4.4 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)]
DNS server: 8.8.8.8 (<name unavailable>)
9 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 8.8.8.8 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)]
DNS server: 192.112.36.4 (g.root-servers.net.)
8 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.112.36.4 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)]
DNS server: 192.203.230.10 (e.root-servers.net.)
8 test failure on this DNS server
PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.203.230.10 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)]
DNS server: 192.228.79.201 (b.root-servers.net.)
8 test failure on this DNS server
When this is happening we lose the ability to resolve FQDNs
All help would be appreciated.
0 Answers