357 
 *Destination: 2001:2::/64 
  Type       : I                                         Cost     : 1 
  NextHop    : directly-connected                        Interface: Eth1/2 
 
 *Destination: 2001:3::/64 
  Type       : IA                                        Cost     : 4 
  NextHop    : FE80::F40D:0:93D0:1                       Interface: Eth1/2 
 
 Total: 5 
 Intra area: 1         Inter area: 4         ASE: 0 
The output shows that a default route is added and its cost is the cost of a direct route plus the 
configured cost. 
4.  Configure Area 2 as a totally stub area to further reduce the stub area routing table size: 
# Configure Area 2 as a totally stub area on Router C. 
[RouterC-ospfv3-1-area-0.0.0.2] stub no-summary 
# Display OSPFv3 routing table on Router D. 
[RouterD] display ospfv3 routing 
 
               OSPFv3 Process 1 with Router ID 4.4.4.4 
------------------------------------------------------------------------- 
 E1 - Type 1 external route,  IA - Inter area route,  I - Intra area route 
 E2 - Type 2 external route,  *  - Selected route 
 
 *Destination: ::/0 
  Type       : IA                                        Cost     : 11 
  NextHop    : FE80::F40D:0:93D0:1                       Interface: Eth1/2 
 
 *Destination: 2001:2::/64 
  Type       : I                                         Cost     : 1 
  NextHop    : directly-connected                        Interface: Eth1/2 
 
 Total: 2 
 Intra area: 1         Inter area: 1         ASE: 0 
The output shows that route entries are reduced. All indirect routes are removed, except the default 
route. 
Configuring OSPFv3 DR election 
Network requirements 
•  Configure router priority 100 for Router A, the highest priority on the network, so it will become the 
DR. 
•  Configure router priority 2 for Router C, the second highest priority on the network, so it will become 
the BDR. 
•  Configure router priority 0 for Router B, so it cannot become a DR or BDR. 
•  Router D uses the default router priority 1.