Dhcpv6 Dual-Stack Lite Support; Configuring Aftr Fully Qualified Domain Name For Ds-Lite; Step 34 Use The Commit Or End Command - Cisco ASR 9000 Series Configuration Manual

Establishing Subscriber Sessions
Command or Action
Configuring IPv6 Address or Prefix Pool Name: An example
configure
dynamic-template
type ipsubscriber ipv6-sub-template
dhcpv6 delegated-prefix-pool mypool
end
dynamic-template
type ppp ipv6-sub-template
dhcpv6 address-pool my-pppoe-addr-pool
!
type ipsubscriber my-ipv6-template
dhcpv6 address-pool my-ipsub-addr-pool
!!
ipv6 nd framed-prefix-pool my-slaac-pool
end
!!

DHCPv6 Dual-Stack Lite Support

Dual-Stack Lite (DS-Lite) is a technique for providing complete support for both IPv4 and IPv6 internet
protocols, both in hosts and router. Dual-Stack Lite enables a broadband service provider to share IPv4
addresses among customers by combining two technologies: IP in IP (IPv4- in-IPv6) and Network Address
Translation (NAT).
The DS-Lite feature contains two components: Basic Bridging Broad Band ( B4) and Address Family Transition
Router (AFTR).
The B4 element is a function implemented on a dual-stack-capable node, either a directly connected device
or a CPE that creates a tunnel to an Address Family Transition Router (AFTR). On the other hand, an AFTR
element is the combination of an IPv4-in-IPv6 tunnel endpoint and an IPv4-IPv4 NAT implemented on the
same node. A DS-Lite B4 element uses a DHCPv6 option to discover the IPv6 address of its corresponding
AFTR location.
For more information about configuring AFTR for DS-Lite, see
Name for DS-Lite, on page

Configuring AFTR Fully Qualified Domain Name for DS-Lite

Perform this task to configure AFTR fully qualified domain name for DS-Lite.
SUMMARY STEPS
1. configure
2. dhcp ipv6
3. profile server_profile_name server
4. aftr-name aftr_name
5. Use the commit or end command.
OL-28375-03
167.
Cisco ASR 9000 Series Aggregation Services Router Broadband Network Gateway Configuration Guide, Release
Purpose
Configuring AFTR Fully Qualified Domain
DHCPv6 Features
4.3.x
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