Chapter 6 Broadband
EMG6726/8726-B10A User’s Guide
66
IPv6 Rapid Deployment
Use IPv6 Rapid Deployment (6rd) when the local network uses IPv6 and the ISP has an IPv4 network.
When the EMG has an IPv4 WAN address and you set
IPv4/IPv6 Mode
to
IPv4 Only
, you can enable 6rd
to encapsulate IPv6 packets in IPv4 packets to cross the ISP’s IPv4 network.
The EMG generates a global IPv6 prefix from its IPv4 WAN address and tunnels IPv6 traffic to the ISP’s
Border Relay router (BR in the figure) to connect to the native IPv6 Internet. The local network can also
use IPv4 services. The EMG uses it’s configured IPv4 WAN IP to route IPv4 traffic to the IPv4 Internet.
Figure 23
IPv6 Rapid Deployment
Dual Stack Lite
Use Dual Stack Lite when local network computers use IPv4 and the ISP has an IPv6 network. When the
EMG 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 EMG 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 EMG uses it’s configured IPv6 WAN IP to route IPv6 traffic to the IPv6 Internet.