9-12z Executing the import-route or default-route-advertise command on a router makes it becomean ASBR.z You can only inject and advertise a default route using the default-route-advertise command.z Since OSPFv3 is a link state routing protocol, it cannot directly filter LSAs to be advertised.Therefore, you need to filter redistributed routes first, and thus only routes that are not filtered outcan be advertised in LSAs into the routing domain.z Use of the filter-policy export command filters routes redistributed with the import-routecommand. If the import-route command is not configured, executing the filter-policy exportcommand does not take effect.Tuning and Optimizing OSPFv3 NetworksThis section describes configurations of OSPFv3 timers, interface DR priority, MTU check ignorancefor DD packets, and disabling interfaces from sending OSPFv3 packets.OSPFv3 timers:z Packet timer: Specified to adjust topology convergence speed and network loadz LSA delay timer: Specified especially for low-speed linksz SPF timer: Specified to protect networks from being over-loaded due to frequent networkchanges.For a broadcast network, you can configure DR priorities for interfaces to affect DR/BDR election.By disabling an interface from sending OSPFv3 packets, you can make other routers on the networkobtain no information from the interface.Prerequisitesz Enable IPv6 packet forwardingz Configure OSPFv3 basic functionsConfiguring OSPFv3 TimersFollow these steps to configure OSPFv3 timers:To do… Use the command… RemarksEnter system view system-view —Enter interface view interface interface-typeinterface-number —Configure the hello interval ospfv3 timer hello seconds[ instance instance-id ]OptionalDefaults to 10 seconds on P2P,broadcast interfaces.
