D-Link DI-1750 Reference Manual page 283

SOA
3. DNS Zone
In general, the DNS database can dispart into defferent resouce records and each record is called zone.
A zone can include the resource record of all the zones or parts of a zone.A zone is divide into serveral
child zone is to simplize the mangement. After using this distrabuting frame, the administrator can
manage every child zone effectivly when the domain name extends.
Authoritative name server：
The DNS Server which manages the RR is named authoritative name server.Every server can be an
authoritative name server or many.
Primary server and slave server：
In order to ensure the high trustiness, DNS requests using many name server to support every zone.
The RR of every zone updates to a primary server manuly or antoly.The primay server can be an
authoritative name server having one or more zone. The other servers(named master DNS server) are
standby server servicing for the same zone,and this can avoiding some instance when the primary
server is abnormity.Master servers make their database are update to date by communicating to
primary server. Copying the zone files to many name servers is named zone exchange.
6.14.2 DNS Resolver configuration tast
This modual realize the DNS Resolver only and the DNS Server is not range of this modual.
♦
Enables DNS-based host name-to-address translation
♦
Specify the IP address of a domain name server
♦
Set a default domain name
♦ Defines a list of domains
♦
Defines static host name-to-address mapping
♦
Specify times to retry a DNS query
♦
Specify timeout waiting for response to a DNS query
♦
Delete the mapping of a host name to IP address in cache
♦
Specify the IP address of a primary server
♦
Enable update function of dynamic DNS
♦ Set the period of DNS update
♦ Bind the domain name to a IP address or IP address of interface
♦
Enable DNS Proxy function of DNS Resolver
♦ The function of information showing or debug showing
6.14.3 Enables DNS-based host name-to-address translation
6.14.4 Enables DNS-based host name-to-address translation
That is , make it query the hosts by name or address. This modual enable DNS lookup by default.
In congure use the following command：
ip domain lookup
no ip domain lookup
identifies the start of a zone of authority
Command
Model Name
Eable DNS lookup.
Disable DNS lookup.
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