The addressing of the whole network is designed in a hierarchic way: this makes it possible to aggregate all routes, so reducing the routing table’s size. Each point of presence of Renater3’s backbone is allocated a /40 IPv6 prefix. Sites connected to a POP receive a /48 prefix derived from the /40 of the POP. For monitoring purpose, the /48 prefixes are not aggregated at the POP’s in /40’s. This way it is possible to have a view of sites routing announcements in the routing table. The addressing scheme is illustrated in Figure 12-8.

The GIP Renater manages the delegation of reverse zones of Renater3’s SubTLA prefix (2001:0660::/32). It delegates to each site the reverse zone of the NLA-ID (/48) allocated to the site.

AFNIC, the French Network Information Center, is managing the .fr top-level domain name. They are connected to Renater3’s Internet exchange point (SFINX) that supports IPv6.