Dcdiag for DNS test: What are the "Auth", "Basc", "Forw", "Del", "Dyn", "RReg", "Ext"?

Dcdiag for DNS test: What are the "Auth", "Basc", "Forw", "Del", "Dyn", "RReg", "Ext"?

Domain Controller Diagnosis
Performing initial setup:
   Done gathering initial info.
Doing initial required tests
   Testing server: Default-First-Site-Name\BAN-DC01
      Starting test: Connectivity
         ......................... BAN-DC01 passed test Connectivity
Doing primary tests
   Testing server: Default-First-Site-Name\BAN-DC01
DNS Tests are running and not hung. Please wait a few minutes...
   Running partition tests on : ForestDnsZones
   Running partition tests on : DomainDnsZones
   Running partition tests on : Schema
   Running partition tests on : Configuration
   Running partition tests on : gs
   Running enterprise tests on : gs.com
      Starting test: DNS
         ......................... gs.com passed test DNS
C:\>

3. Here is some problem with the below output
 
C:\>dcdiag /test:dns
Domain Controller Diagnosis
Performing initial setup:
   Done gathering initial info.
Doing initial required tests
   Testing server: Default-First-Site-Name\BAN-DC01
      Starting test: Connectivity
         ......................... BAN-DC01 passed test Connectivity
Doing primary tests
   Testing server: Default-First-Site-Name\BAN-DC01
DNS Tests are running and not hung. Please wait a few minutes...
   Running partition tests on : ForestDnsZones
   Running partition tests on : DomainDnsZones
   Running partition tests on : Schema
   Running partition tests on : Configuration
   Running partition tests on : gs
   Running enterprise tests on : gs.com
      Starting test: DNS
         Test results for domain controllers:
            DC: ban-dc01.gs.com
            Domain: gs.com
               TEST: Forwarders/Root hints (Forw)
                  Error: Root hints list has invalid root hint server: a.root-se
rvers.net. (198.41.0.4)
                  Error: Root hints list has invalid root hint server: b.root-se
rvers.net. (128.9.0.107)
                  Error: Root hints list has invalid root hint server: c.root-se
rvers.net. (192.33.4.12)
                  Error: Root hints list has invalid root hint server: d.root-se
rvers.net. (128.8.10.90)
                  Error: Root hints list has invalid root hint server: e.root-se
rvers.net. (192.203.230.10)
                  Error: Root hints list has invalid root hint server: f.root-se
rvers.net. (192.5.5.241)
                  Error: Root hints list has invalid root hint server: g.root-se
rvers.net. (192.112.36.4)
                  Error: Root hints list has invalid root hint server: h.root-se
rvers.net. (128.63.2.53)
                  Error: Root hints list has invalid root hint server: i.root-se
rvers.net. (192.36.148.17)
                  Error: Root hints list has invalid root hint server: j.root-se
rvers.net. (192.58.128.30)
                  Error: Root hints list has invalid root hint server: k.root-se
rvers.net. (193.0.14.129)
                  Error: Root hints list has invalid root hint server: l.root-se
rvers.net. (198.32.64.12)
                  Error: Root hints list has invalid root hint server: m.root-se
rvers.net. (202.12.27.33)
         Summary of test results for DNS servers used by the above domain contro
llers:
            DNS server: 128.63.2.53 (h.root-servers.net.)
               1 test failure on this DNS server
               This is not a valid DNS server. PTR record query for the 1.0.0.12
7.in-addr.arpa. failed on the DNS server 128.63.2.53
            DNS server: 128.8.10.90 (d.root-servers.net.)
               1 test failure on this DNS server
               This is not a valid DNS server. PTR record query for the 1.0.0.12
7.in-addr.arpa. failed on the DNS server 128.8.10.90
            DNS server: 128.9.0.107 (b.root-servers.net.)
               1 test failure on this DNS server
               This is not a valid DNS server. PTR record query for the 1.0.0.12
7.in-addr.arpa. failed on the DNS server 128.9.0.107
            DNS server: 192.112.36.4 (g.root-servers.net.)
               1 test failure on this DNS server
               This is not a valid DNS server. PTR record query for the 1.0.0.12
7.in-addr.arpa. failed on the DNS server 192.112.36.4
            DNS server: 192.203.230.10 (e.root-servers.net.)
               1 test failure on this DNS server
               This is not a valid DNS server. PTR record query for the 1.0.0.12
7.in-addr.arpa. failed on the DNS server 192.203.230.10
            DNS server: 192.33.4.12 (c.root-servers.net.)
               1 test failure on this DNS server
               This is not a valid DNS server. PTR record query for the 1.0.0.12
7.in-addr.arpa. failed on the DNS server 192.33.4.12
            DNS server: 192.36.148.17 (i.root-servers.net.)
               1 test failure on this DNS server
               This is not a valid DNS server. PTR record query for the 1.0.0.12
7.in-addr.arpa. failed on the DNS server 192.36.148.17
            DNS server: 192.5.5.241 (f.root-servers.net.)
               1 test failure on this DNS server
               This is not a valid DNS server. PTR record query for the 1.0.0.12
7.in-addr.arpa. failed on the DNS server 192.5.5.241
            DNS server: 192.58.128.30 (j.root-servers.net.)
               1 test failure on this DNS server
               This is not a valid DNS server. PTR record query for the 1.0.0.12
7.in-addr.arpa. failed on the DNS server 192.58.128.30
            DNS server: 193.0.14.129 (k.root-servers.net.)
               1 test failure on this DNS server
               This is not a valid DNS server. PTR record query for the 1.0.0.12
7.in-addr.arpa. failed on the DNS server 193.0.14.129
            DNS server: 198.32.64.12 (l.root-servers.net.)
               1 test failure on this DNS server
               This is not a valid DNS server. PTR record query for the 1.0.0.12
7.in-addr.arpa. failed on the DNS server 198.32.64.12
            DNS server: 198.41.0.4 (a.root-servers.net.)
               1 test failure on this DNS server
               This is not a valid DNS server. PTR record query for the 1.0.0.12
7.in-addr.arpa. failed on the DNS server 198.41.0.4
            DNS server: 202.12.27.33 (m.root-servers.net.)
               1 test failure on this DNS server
               This is not a valid DNS server. PTR record query for the 1.0.0.12
7.in-addr.arpa. failed on the DNS server 202.12.27.33
         Summary of DNS test results:
                                            Auth Basc Forw Del  Dyn  RReg Ext
               ________________________________________________________________
            Domain: gs.com
               ban-dc01                     PASS PASS FAIL PASS PASS PASS n/a
         ......................... gs.com failed test DNS
 
4.Now what are the "Auth" "Basc"" Forw" "Del"  "Dyn"  "RReg" "Ext"?


  
5. Forw


The issue above is with the DNS forwarders(Forw. Might be that not configured or forwarders are not working properly. For checking the issue you can use these commands:
1 Nslookup google.com <forwarder IP>  
2 PortQry.exe -n <forwarder IP> -e 53 -p both

6. RReg

Now what “RReg” is & what should you do if it is failed?

resource registration. ipconfig /registerdns on a server will attempt to register the DNS entries, and report errors in the event log.

Warning: DcGetDcName(PDC_REQUIRED) call failed, error 1355. Is the PDC emulator really up and running?
If you want to force a dc to re-register AD specific DNS registrations, you need to use NLTEST /dsregdns (Ipconfig /registerDNS only does host registrations not DC specific).
Also check all SRV records of the problematic DC.

Troubleshooting SRV Record Registration


7. Dyn

Issue:   TEST: Dynamic update (Dyn)
         Warning: Failed to delete the test record dcdiag-test-record in zone DOMAIN.local

Resolution : This issue can occur if both the methods of Dynamic updates is selected on the DNS Server – “Nonsecure and Secure”, please convert the zone to “Secure only” on Dynamic updates.
http://social.technet.microsoft.com/Forums/en-US/winserverDS/thread/f99e7099-b861-4400-a891-5f0a9492921e

8.Ext

Issue:

Have run the "Dcdiag /test:DNS /DnsResolveExtName /DnsInternetName:google.com" & got the below result.

Resolution: Check your ISP forwarders.

 

 Value Description 
 Basc /DnsBasic
Performs basic DNS tests, including network connectivity, DNS client configuration, service availability, and zone existence.


 Del /DnsDelegation 
Performs the /DnsBasic tests, and also checks for proper delegations.

  Forw

/DnsForwarders

Performs the /DnsBasic tests, and also checks the configuration of forwarders.

 

 Dyn /DnsDynamicUpdate
Performs /DnsBasic tests, and also determines if dynamic update is enabled in the Active Directory zone.

 RReg /DnsRecordRegistration
Performs the /DnsBasic tests, and also checks if the address (A), canonical name (CNAME) and well-known service (SRV) resource records are registered. In addition, creates an inventory report based on the test results.


 Ext /DnsResolveExtName
Performs the /DnsBasic tests, and also attempts to resolve InternetName. If /DnsInternetName is not specified, attempts to resolve the name www.microsoft.com. If /DnsInternetName is specified, attempts to resolve the Internet name supplied by the user.
9. Use /E switch for testing the all DNS servers. See the below snap. I have two(2) DCs in my test environment.
 

____________________________________________________________________________________________________________________________

10.My Other TechNet WIKIs For DNS
Nos.  My Other TechNet WIKIs For DNS  
DNS Zone Backup & Restoration
2 Need to Convert "A" Record From Lowercase to Uppercase - Part 1 
3 Need to Convert "A" Record From Lowercase to Uppercase - Part 2
4 DNS Design-DNS Zones for per Organization Units
5 Best practices for DNS client settings on DC and domain members
6 Command to Troubleshoot DNS Issues (Nslookup Advance Usage)
7 AD Integrated Conditional Forwarder
8 When the User Is a Normal Domain User, How to Provide the Read Permission on a DNS Log for a Particular DNS Server
9 DNS Read-Only Console on 2003-Multi Domain Environment

 
____________________________________________________________________________________________________________________________
 
Regards
Biswajit Biswas
My Blogs|TechnetWiki Ninja


 

Best regards Biswajit Biswas Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. MCP 2003,MCSA 2003, MCSA:M 2003, CCNA, MCTS, Enterprise Admin

 
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