Related Documentation
Selecting the Method of Obtaining IPv6 Prefixes
You can set up the BNG to select IPv6 prefixes through one of the following methods:
- An external source such as a AAA RADIUS server or a DHCP server using the DHCPv6 relay agent.
- Dynamic assignment from a local pool of global IPv6 addresses or prefixes that is configured on the BNG
Using a AAA RADIUS Server to Obtain Global IPv6 Addresses and IPv6 Prefixes
Table 1 describes the RADIUS attributes used in a dual-stack network. These attributes are sent from the RADIUS server to the BNG in RADIUS Access-Accept messages.
Table 1: RADIUS Attributes Used to Obtain Global IPv6 Addresses and IPv6 Prefixes
RADIUS Attribute | Address Assignment Type | Attribute Description |
|---|---|---|
Framed-IPv6-Prefix | NDRA | IPv6 prefix with a prefix length less than 128. |
DHCPv6 IA_NA | IPv6 prefix with a length of 128. | |
Framed-IPv6-Pool | NDRA | Name of an NDRA pool configured on the BNG from which the BNG selects a prefix. |
DHCPv6 IA_NA | Name of an address-assignment pool configured on the BNG from which the BNG selects a global IPv6 address. | |
Delegated-IPv6-Prefix | DHCPv6 prefix delegation | IPv6 prefix. |
Jnpr-IPv6-Delegated-Pool-Name | DHCPv6 prefix delegation | Name of an address-assignment pool configured on the BNG from which the BNG delegates a prefix. |
