General Setup - Draytek Vigor2920 Series User Manual

After connecting into the router, 3G/4G USB Modem will be regarded as the third WAN port.
However, the original Ethernet WAN1/WAN2 still can be used and Load-Balance can be done
in the router. Besides, 3G/4G USB Modem in WAN3 also can be used as backup device.
Therefore, when WAN1/WAN2 is not available, the router will use 3.5G for supporting
automatically. The supported 3G USB Modem will be listed on Draytek web site. Please visit
www.draytek.com for more detailed information.
N e t w o r k C
N e t w o r k C
Due to the shortage of IPv4 address, more and more countries use IPv6 to solve the problem.
However, to continually use the original rich resources of IPv4, both IPv6 and IPv4 networks
shall communicate for each other via intercommunication mechanism to complete the shifting
job from IPv4 to IPv6 gradually. At present, there are three common types of
intercommunication mechanisms:

Dual Stack
The user can use both IPv4 and IPv6 techniques at the same time. That means adding an
IPv6 stack on the origin network layer to let the host own the communication capability
of IPv4 and IPv6.

Tunnel
Both IPv6 hosts can communication for each other via existing IPv4 network
environment. The IPv6 packets will be encapsulated with the header of IPv4 first. Later,
the packets will be transformed and judged by IPv4 router. Once the packets arrive the
border between IPv4 and IPv6, the header of IPv4 on the packets will be removed. Then,
the packets with IPv6 address will be forwarded to the destination of IPv6 network.

Translation
Such feature is active only for the user who uses IPv4 to communicate with other user
using IPv4 service.
Before configuring the settings on Vigor2920, you need to know which connection type that
your IPv6 service used.
Note: For the IPv6 service, you have to configure WAN/LAN settings before using the
service.
Below shows the menu items for WAN.
4 . 1 . 2 G e n e r a l S e
4 . 1 . 2 G e n e r a l S e
This section will introduce some general settings of Internet and explain the connection modes
for WAN1, WAN2 and WAN3 in details.
This router supports multiple-WAN function. It allows users to access Internet and combine
the bandwidth of the multiple-WAN to speed up the transmission through the network. Each
WAN port can connect to different ISPs even if the ISPs use different technology to provide
telecommunication service (such as Cable modem). If any connection problem occurred on
one of the ISP connections, all the traffic will be guided and switched to the normal
communication port for proper operation. Please configure WAN1, WAN2 and WAN3
settings.
o n n e c t i o n b y I P v 6
o n n e c t i o n b y I P v
t u p
t u p
6
121
Vigor2920 Series User's Guide