Man IPv6 transition technology-Radius extension attributes

During the transformation of the IPv6 Metropolitan Area Network, in addition to maintaining interaction with BRAS through IPv4 Radius packets, the AAA Server must be extended to support IPv6 expansion. IPv6-related Radius attributes include standard attributes, transition technology attributes, and device vendor extended attributes.

Class 1 attributes: IPv6 address reporting attributes (Standard attributes)

Standard Specifications rfc00002 and RFC4818 specify the IPv6 attributes of Radius.

Use standard properties Framed-Interface-Id and IA-NA to report user address information when ND access or when an address is assigned to a Host or gateway in DHCPv6 Framed-IPv6-Prefix Mode

Reporting in the IA-NA if a 128-bit address is assigned to a user using the DHCPv6 Framed-IPv6-Prefix

Prefix information is reported using the standard property Delegated-IPv6-Prefix when a prefix is assigned for a PD access

Type 2 attributes: Attributes of Transition Technology

In the implementation process of each transition technology, relevant attributes need to be configured. Many of these attributes are issued to BRAS by AAA through Radius, and then delivered to CPE through DHCP and other methods.

DS-lite: RFC6519 defines the attributes of DS-Lite-Tunnel-Name. The property ID is 144.

6RD: RFC6930 defines the Radius extension attribute in 5.

The extended attributes of NAT64, MAP, and 4rd are also studied and discussed in the IETF Working Group.

Category 3 attributes: extended attributes of equipment vendors

Because the IPv6 Radius attribute of the standard specification cannot meet the business operation requirements, equipment vendors are allowed to use the attribute Vender-Specific (26) for extension according to RFC2138 specification.

The preceding three Radius attributes can fully support IPv6 service development and be continuously improved.