DNS Diagnostic CLI command
dcdiag /test:dns /vPS C:\Users\Administrator> dcdiag /test:dns /v
Directory Server Diagnosis
Performing initial setup:
Trying to find home server...
* Verifying that the local machine ad, is a Directory Server.
Home Server = ad
* Connecting to directory service on server ad.
* Identified AD Forest.
Collecting AD specific global data
* Collecting site info.
Calling ldap_search_init_page(hld,CN=Sites,CN=Configuration,DC=ciscoar,DC=onprem,LDAP_SCOPE_SUBTREE,(objectCategor
y=ntDSSiteSettings),.......
The previous call succeeded
Iterating through the sites
Looking at base site object: CN=NTDS Site Settings,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=ciscoar
,DC=onprem
Getting ISTG and options for the site
* Identifying all servers.
Calling ldap_search_init_page(hld,CN=Sites,CN=Configuration,DC=ciscoar,DC=onprem,LDAP_SCOPE_SUBTREE,(objectClass=n
tDSDsa),.......
The previous call succeeded....
The previous call succeeded
Iterating through the list of servers
Getting information for the server CN=NTDS Settings,CN=AD,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Config
uration,DC=ciscoar,DC=onprem
objectGuid obtained
InvocationID obtained
dnsHostname obtained
site info obtained
All the info for the server collected
* Identifying all NC cross-refs.
* Found 1 DC(s). Testing 1 of them.
Done gathering initial info.
Doing initial required tests
Testing server: Default-First-Site-Name\AD
Starting test: Connectivity
* Active Directory LDAP Services Check
Determining IP4 connectivity
* Active Directory RPC Services Check
......................... AD passed test Connectivity
Doing primary tests
Testing server: Default-First-Site-Name\AD
Test omitted by user request: Advertising
Test omitted by user request: CheckSecurityError
Test omitted by user request: CutoffServers
Test omitted by user request: FrsEvent
Test omitted by user request: DFSREvent
Test omitted by user request: SysVolCheck
Test omitted by user request: KccEvent
Test omitted by user request: KnowsOfRoleHolders
Test omitted by user request: MachineAccount
Test omitted by user request: NCSecDesc
Test omitted by user request: NetLogons
Test omitted by user request: ObjectsReplicated
Test omitted by user request: OutboundSecureChannels
Test omitted by user request: Replications
Test omitted by user request: RidManager
Test omitted by user request: Services
Test omitted by user request: SystemLog
Test omitted by user request: Topology
Test omitted by user request: VerifyEnterpriseReferences
Test omitted by user request: VerifyReferences
Test omitted by user request: VerifyReplicas
Starting test: DNS
DNS Tests are running and not hung. Please wait a few minutes...
See DNS test in enterprise tests section for results
......................... AD passed test DNS
Running partition tests on : ForestDnsZones
Test omitted by user request: CheckSDRefDom
Test omitted by user request: CrossRefValidation
Running partition tests on : DomainDnsZones
Test omitted by user request: CheckSDRefDom
Test omitted by user request: CrossRefValidation
Running partition tests on : Schema
Test omitted by user request: CheckSDRefDom
Test omitted by user request: CrossRefValidation
Running partition tests on : Configuration
Test omitted by user request: CheckSDRefDom
Test omitted by user request: CrossRefValidation
Running partition tests on : ciscoar
Test omitted by user request: CheckSDRefDom
Test omitted by user request: CrossRefValidation
Running enterprise tests on : ciscoar.onprem
Starting test: DNS
Test results for domain controllers:
DC: ad.ciscoar.onprem
Domain: ciscoar.onprem
TEST: Authentication (Auth)
Authentication test: Successfully completed
TEST: Basic (Basc)
The OS
Microsoft Windows Server 2019 Standard (Service Pack level: 0.0)
is supported.
NETLOGON service is running
kdc service is running
DNSCACHE service is running
DNS service is running
DC is a DNS server
Network adapters information:
Adapter
[00000001] Intel(R) 82574L Gigabit Network Connection:
MAC address is 00:0C:29:79:74:0F
IP Address is static
IP address: 192.168.1.55
DNS servers:
127.0.0.1 (ad.ciscoar.onprem.) [Valid]
The A host record(s) for this DC was found
The SOA record for the Active Directory zone was found
The Active Directory zone on this DC/DNS server was found primary
Root zone on this DC/DNS server was not found
TEST: Forwarders/Root hints (Forw)
Recursion is enabled
Forwarders Information:
8.8.8.8 (<name unavailable>) [Valid]
TEST: Delegations (Del)
Delegation information for the zone: ciscoar.onprem.
Delegated domain name: _msdcs.ciscoar.onprem.
DNS server: ad.ciscoar.onprem. IP:192.168.1.55 [Valid]
TEST: Dynamic update (Dyn)
Test record dcdiag-test-record added successfully in zone ciscoar.onprem
Test record dcdiag-test-record deleted successfully in zone ciscoar.onprem
TEST: Records registration (RReg)
Network Adapter
[00000001] Intel(R) 82574L Gigabit Network Connection:
Matching CNAME record found at DNS server 192.168.1.55:
3da78215-0bb3-4681-9718-1b1e5a0241be._msdcs.ciscoar.onprem
Matching A record found at DNS server 192.168.1.55:
ad.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_ldap._tcp.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_ldap._tcp.098ec22d-486e-4240-989e-1cf0d53613a0.domains._msdcs.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_kerberos._tcp.dc._msdcs.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_ldap._tcp.dc._msdcs.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_kerberos._tcp.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_kerberos._udp.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_kpasswd._tcp.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_ldap._tcp.Default-First-Site-Name._sites.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_kerberos._tcp.Default-First-Site-Name._sites.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_ldap._tcp.gc._msdcs.ciscoar.onprem
Matching A record found at DNS server 192.168.1.55:
gc._msdcs.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_gc._tcp.Default-First-Site-Name._sites.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.ciscoar.onprem
Matching SRV record found at DNS server 192.168.1.55:
_ldap._tcp.pdc._msdcs.ciscoar.onprem
Summary of test results for DNS servers used by the above domain
controllers:
DNS server: 192.168.1.55 (ad.ciscoar.onprem.)
All tests passed on this DNS server
Name resolution is functional._ldap._tcp SRV record for the forest root domain is registered
DNS delegation for the domain _msdcs.ciscoar.onprem. is operational on IP 192.168.1.55
DNS server: 8.8.8.8 (<name unavailable>)
All tests passed on this DNS server
Summary of DNS test results:
Auth Basc Forw Del Dyn RReg Ext
_________________________________________________________________
Domain: ciscoar.onprem
ad PASS PASS PASS PASS PASS PASS n/a
......................... ciscoar.onprem passed test DNS
Test omitted by user request: LocatorCheck
Test omitted by user request: Intersite
PS C:\Users\Administrator>