Figure 153 Advanced > Dns > Cache - ZyXEL Communications NBG410W3G User Manual

Figure 153 ADVANCED > DNS > Cache
The following table describes the labels in this screen.
LABEL
DNS Cache Setup
Cache Positive DNS
Resolutions
Maximum TTL
Cache Negative
DNS Resolutions
Negative Cache
Period
Apply
Reset
DNS Cache Entry
Flush
Refresh
#
Cache Type
Domain Name
NBG410W3G Series User's Guide
DESCRIPTION
Select the check box to record the positive DNS resolutions in the cache.
Caching positive DNS resolutions helps speed up the ZyXEL Device's
processing of commonly queried domain names and reduces the amount of
traffic that the ZyXEL Device sends out to the WAN.
Type the maximum time to live (TTL) (60 to 3600 seconds). This sets how long
the ZyXEL Device is to allow a positive resolution entry to remain in the DNS
cache before discarding it.
Caching negative DNS resolutions helps speed up the ZyXEL Device's
processing of commonly queried domain names (for which DNS resolution has
failed) and reduces the amount of traffic that the ZyXEL Device sends out to the
WAN.
Type the time (60 to 3600 seconds) that the ZyXEL Device is to allow a negative
resolution entry to remain in the DNS cache before discarding it.
Click Apply to save your changes back to the ZyXEL Device.
Click Reset to begin configuring this screen afresh.
Click this button to clear the cache manually. After you flush the cache, the
ZyXEL Device must query the DNS servers again for any domain names that
had been previously resolved.
Click this button to reload the cache.
This is the index number of a record.
This displays whether the response for the DNS request is positive or negative.
This is the domain name of a host.
Chapter 14 DNS
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