The process of propagating a default static route in OSPFv3 is almost identical to OSPFv2.
In Figure 1, R2 is single-homed to a service provider. Therefore, all that is required for R2 to reach the Internet is a default static route to the service provider.
Note: In this example, a loopback interface with the IP address of 2001:DB8:FEED:1::1/64 is used to simulate the connection to the service provider.
Figure 2 displays the current IPv6 routing table of R1. Notice that it has no knowledge of the route to the Internet.
To propagate a default route, the edge router (R2) must be configured with:
- A default static route using the ipv6 route ::/0 {ipv6-address | exit-intf} command.
- The default-information originate router configuration mode command. This instructs R2 to be the source of the default route information and propagate the default static route in OSPF updates.
The example in Figure 3 configures a fully-specified default static route to the service provider.