Components of the IPv6 routing table are very similar to the IPv4 routing table. For instance, it is populated using directly connected interfaces, static routes, and dynamically learned routes.
Because IPv6 is classless by design, all routes are effectively level 1 ultimate routes. There is no level 1 parent of level 2 child routes.
The topology displayed in the figure is used as the reference topology for this section. Notice that in the topology:
- R1, R2, and R3 are configured in a full mesh topology. All routers have redundant paths to various networks.
- R2 is the edge router and connects to the ISP; however, a default static route is not being advertised.
- EIGRP for IPv6 has been configured on all three routers.