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Configuring Domain Name System (DNS) Characteristics
7-12 TCP/IP Network Characteristics
Changing the Time Limit
The domain name resolution time limit specifies the time that the access server waits
before it resends a query to a name server. The range is from 1 to 10 seconds, and the
default is 4 seconds.
To change the time limit, enter the command shown in the following example:
Local> CHANGE INTERNET NAME RESOLUTION TIME LIMIT 5
Changing the Retry Limit
The domain name resolution retry limit indicates the number of times that the access
server resends queries to the same name server when looking for an Internet host. The
range is from 1 to 5, and the default is 3.
To change the retry limit, enter the command shown in the following example:
Local> CHANGE INTERNET NAME RESOLUTION RETRY LIMIT 2
Changing the Name Resolution Mode
The name resolution mode describes where the access server searches for host name
and address information. To change the name resolution mode, use the command
shown in the following example:
Local> CHANGE INTERNET NAME RESOLUTION MODE LOCAL
Name Resolution Modes
The following table lists and describes the name resolution modes:
Mode When the access server attempts to resolve a host
name or address, it searches:
Local
Local data
, which is host name and address information that
users previously entered with the SET/DEFINE/CHANGE
INTERNET HOST command. Use local data when no name
servers are configured.
Remote Learned data and remote name servers.
Learned data
is name and address information that the access
server receives from name servers and enters in its cache. If the
access server fails to resolve the address with the learned data
in its cache, it queries the network name servers for remote data.
Ordered
(Default)
Local data, then learned data and remote data from the network
name servers. Local data takes precedence.