Saturday, August 14, 2010

DNS Command Reference





Function
DNSCMD option
Example
Comments
Do any dnscmd command on a remote system
dnscmd servername command
dnscmd main.bigfirm.com /zoneprint bigfirm.com
Create a primary zone
dnscmd /zoneadd zonename/primary
dnscmd /zoneadd bigfirm.com /primary
Create a secondary zone
dnscmd /zoneadd zonename/secondary master IP address
dnscmd /zoneadd bigfirm.com /secondary 192.168.1.1
Host a zone on a server based on an existing (perhaps restored) zone file
dnscmd /zoneadd zonename/primary /file filename /load
dnscmd /zoneadd bigfirm.com /primary /file bigfirm.com.dns /load
Delete a zone from a server
dnscmd /zonedelete zonename [/f]
dnscmd /zonedelete bigfirm.com /f
(without the /f, dnscmd asks you if you really want to delete the zone)
Show all of the zones on a DNS server
dnscmd /enumzones
dnscmd /enumzones
Dump (almost) all of the records in a zone
dnscmd /zoneprint zonename
dnscmd /zoneprint bigfirm.com
Doesn't show glue records.
Add an A record to a zone
dnscmd /recordadd zonenamehostname A ipaddress
dnscmd /recordadd bigfirm.com mypc A 192.168.1.33
Add an NS record to a zone
dnscmd /recordadd zonename @ NSservername
dnscmd /recordadd bigfirm.com @ dns3.bigfirm.com
Delegate a new child domain, naming its first DNS server
dnscmd /recordadd zonenamechildname NS dnsservername
dnscmd /recordadd bigfirm.com test NS main.bigfirm.com
This would create the "test.bigfirm.com" DNS child domain unter the bigfirm.com DNS domain
Add an MX record to a zone
dnscmd /recordadd zonename @ MXpriority servername
dnscmd /recordadd bigfirm.com @ MX 10 mail.bigfirm.com
Add a PTR record to a reverse lookup zone
dnscmd /recordadd zonename lowIPPTR FQDN
dnscmd /recordadd 1.168.192.in-addr.arpa 3 PTR pc1.bigfirm.com
This is the PTR record for a system with IP address 192.168.1.3
Modify a zone's SOA record
dnscmd /recordadd zonename @ SOA primaryDNSservername responsibleemailipaddress serialnumber refreshinterval retryinterval expireinterval defaultTTL
dnscmd /recordadd bigfirm.com @ SOA winserver.bigfirm.com mark.bigfirm.com 41 1800 60 2592000 7200
Ignores the serial number if it's not greater than the current serial number
Delete a resource record
dnscmd /recorddelete zonenamerecordinfo [/f]
dnscmd /recorddelete bigfirm.com @ NS main.bigfirm.com /f
Again, "/f" means "don't annoy me with a confirmation request, just do it."
Create a resource record and incorporate a nonstandard TTL
dnscmd /recordadd zonenameleftmostpartofrecord TTLrestofrecord
dnscmd /recordadd bigfirm.com pc34 3200 A 192.168.1.4
Reload a zone from its zone file in \windows\system32\dns
dnscmd /zonereload zonename
dnscmd /zonereload bigfirm.com
Really only useful on primary DNS servers
Force DNS server to flush DNS data to zone file
dnscmd /zonewriteback zonename
dnscmd /zonewriteback bigfirm.com
Tell a primary whom to allow zone transfers to
dnscmd /zoneresetsecondarieszonename /nonsecure|securens
dnscmd /zoneresetsecondaries bigfirm.com /nonsecure
That example says to allow anyone who asks to get a zone transfer
Enable/disable DNS NOTIFY
dnscmd /zoneresetsecondarieszonename /notify|/nonotify
dnscmd /zoneresetsecondaries bigfirm.com /nonotify
Example disables DNS notification, which is contrary to the default settings.
Tell a secondary DNS server to request any updates from the primary
dnscmd /zonerefresh zonename
dnscmd /zonerefresh bigfirm.com
Enable or disable dynamic DNS on a zone
dnscmd /config zonename/allowupdate 1|0
1 enables, 0 disables, 0 is default
Stop the DNS service
Either net stop dns or sc stop dns
(No dnscmd command for this)
Start the DNS service
Either net start dns or sc start dns
(No dnscmd command for this)
Install the DNS service on a 2008 full install system
servermanagercmd -install dns
Install the DNS service on a 2008 Server Core system
ocsetup DNS-Server-Core-Role
Case matters --ocsetup dns-server-core-role would fail
Uninstall the DNS service on a 2008 Server full install system
servermanagercmd -remove dns
Uninstall the DNS service on a 2008 Server Core system
ocsetup /uninstall DNS-Server-Core-Role