D-Link DWR-921 User Manual page 103

DWR-921 4G LTE Router
User Manual
Parameter
Obtain DNS server
addresses
automatically
Primary IPv6 DNS
server / Secondary IPv6
DNS server
Figure 90. The page for creating a new
Parameter
Enable
The maximum number
of attempts
IPv6 (for the Dual and IPv6 types)
Move the switch to the right to configure automatic assignment of
IPv6 DNS server addresses. Upon that the Primary IPv6 DNS
server and Secondary IPv6 DNS server fields are not available
for editing.
Enter addresses of the primary and secondary IPv6 DNS servers in
the relevant fields.
Mobile Internet
Health Check
Move the switch to the right to check the connection health using
the ICMP ping mechanism.
A number of requests to check the health of the connection. By
default, the value 10 is specified.
Several ping requests are sent to check the hosts. After several
failed attempts the connection status is changed until a successful
attempt is made.
Page 103 of 255
Configuring via Web-based Interface
Description
connection. The Health Check section.
Description