Before You Begin - ZyXEL Communications SBG5500-A User Manual

Dual Stack Lite
Use Dual Stack Lite when local network computers use IPv4 and the ISP has an IPv6 network. When the
SBG has an IPv6 WAN address and you set IPv4/IPv6 Mode to IPv6 Only, you can enable Dual Stack Lite
to use IPv4 computers and services.
The SBG tunnels IPv4 packets inside IPv6 encapsulation packets to the ISP's Address Family Transition
Router (AFTR in the graphic) to connect to the IPv4 Internet. The local network can also use IPv6 services.
The VDSL Router uses it's configured IPv6 WAN IP to route IPv6 traffic to the IPv6 Internet.
Figure 44 Dual Stack Lite

5.1.3 Before You Begin

You need to know your Internet access settings such as encapsulation and WAN IP address. Get this
information from your ISP.
5.2 The WAN Status Screen
Use this screen to show the number of bytes received and sent on the SBG. Click Configuration > WAN /
Internet to open the WAN Status screen.
Figure 45 Configuration > WAN / Internet > WAN Status
Chapter 5 WAN/Internet
SBG
SBG5500 Series User's Guide
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