Using IPv6 Profiles and RADIUS to Configure Neighbor Discovery Route Advertisements

In addition to the CLI-based configuration of Neighbor Discovery, you can also use IPv6 profiles to configure Neighbor Discovery route advertisements for dynamically configured interfaces. In addition, you can use RADIUS to configure the prefix in Neighbor Discovery route advertisements for dynamically configured interfaces.

When you configure either a profile-based or RADIUS-based Neighbor Discovery router advertisement, the following considerations apply:

• You can advertise one IPv6 prefix per interface.
• The router advertisement must have a prefix length of 64. For the Ipv6-NdRa-Prefix attribute, the prefix length is in the following format, in which 0040 indicates the prefix length of 64.

  0x 0040 xxxx xxxx xxxx xxxx

  Note: If both an IPv6 profile and RADIUS are configured for Neighbor Discovery router advertisement, the prefix value returned in RADIUS VSA 26-129 takes precedence over the prefix specified in the IPv6 profile configuration.

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