Draytek Vigor3910 Series User Manual page 257

Available settings are explained as follows:
Item
Activate
Setup Query Server
Setup Test Server
Find more
Cache
Vigor3910 Series User's Guide
Description
Click it to access into MyVigor for activating WCF service.
It is recommended for you to use the default setting,
auto-selected. You need to specify a server for categorize
searching when you type URL in browser based on the web
content filter profile.
It is recommended for you to use the default setting,
auto-selected.
Click it to open http://myvigor.draytek.com for searching
another qualified and suitable server.
None – the router will check the URL that the user wants to
access via WCF precisely, however, the processing rate is
normal. Such item can provide the most accurate URL
matching.
L1 – the router will check the URL that the user wants to
access via WCF. If the URL has been accessed previously, it
will be stored in the router to be accessed quickly if
required. Such item can provide accurate URL matching with
faster rate.
L2 – the router will check the URL that the user wants to
access via WCF. If the data has been accessed previously, the
IP addresses of source and destination IDs will be memorized
for a short time (about 1 second) in the router. When the
user tries to access the same destination ID, the router will
check it by comparing the record stored. If it matches, the
page will be retrieved quickly. Such item can provide URL
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