Draytek Vigor2760, Руководство пользователя

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Vigor2760 Series User’s Guide 118
IPv4 Mask Length Type a number of high-order bits that are identical across
all CE IPv4 addresses within a given 6rd domain.
It may be any value between 0 and 32.
6rd Prefix Type the 6rd IPv6 address.
6rd Prefix Length Type the IPv6 prefix length for the 6rd IPv6 prefix in
number of bits.
WAN Connection
Detection Such function allows you to verify whether network
connection is alive or not through Ping Detect.
Mode – Choose Always On or Ping Detect for the system
to execute for WAN detection. Always On means no
detection will be executed. The network connection will be
on always.

Ping IP/Hostname – If you choose Ping Detect as
detection mode, you have to type IP address in this field
for pinging.

TTL (Time to Live) –If you choose Ping Detect as
detection mode, you have to type TTL value.
After finished the above settings, click OK to save the settings.
Below shows an example for successful IPv6 connection based on 6rd mode.