Hi, We have a small domain network with dual DHCP/DNS servers on 2008R2 servers. They are currently both primary DNS servers. When either server goes down we lose DNS functionality.
Here is a result of dcdiag /test:dns
Directory Server Diagnosis
Performing initial setup:
Trying to find home server...
Home Server = DC2
* Identified AD Forest.
Done gathering initial info.
Doing initial required tests
Testing server: Default-First-Site-Name\DC2
Starting test: Connectivity
......................... DC2 passed test Connectivity
Doing primary tests
Testing server: Default-First-Site-Name\DC2
Starting test: DNS
DNS Tests are running and not hung. Please wait a few minutes...
......................... DC2 failed test DNS
Running partition tests on : ForestDnsZones
Running partition tests on : DomainDnsZones
Running partition tests on : Schema
Running partition tests on : Configuration
Running partition tests on : mannm
Running enterprise tests on : mannm.local
Starting test: DNS
Test results for domain controllers:
DC: DC2.mannm.local
Domain: mannm.local
TEST: Basic (Basc)
Warning: no DNS RPC connectivity (error or non Microsoft DNS server is running)
DC2 PASS WARN n/a
n/a n/a n/a n/a
......................... mannm.local passed test DNS
Thoughts on why it's failing?