INE WB Vol1 - 6.38 OSPF Summarization and Discard Routes

Rack1R5#sh ip route 150.1.2.2
Routing entry for 150.1.0.0/22
  Known via "ospf 1", distance 110, metric 65, type intra area
  Routing Descriptor Blocks:
  * directly connected, via Null0
      Route metric is 65, traffic share count is 1

Rack1R5#conf t 
Enter configuration commands, one per line.  End with CNTL/Z.
Rack1R5(config)#router ospf 1
Rack1R5(config-router)#no dis
Rack1R5(config-router)#no disca
Rack1R5(config-router)#no discard-route i
Rack1R5(config-router)#no discard-route internal
Rack1R5(config-router)#end
Rack1R5#sh ip route 150.
*Jun 21 13:19:52.114: %SYS-5-CONFIG_I: Configured from console by console
Rack1R5#sh ip route 150.1.2.2
% Subnet not in table
Rack1R5#sh ip route 150.1.2.2
% Subnet not in table
Rack1R5#sh ip route de
Rack1R5#sh ip route  
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route

Gateway of last resort is 155.1.45.4 to network 0.0.0.0

     51.0.0.0/32 is subnetted, 1 subnets
O E2    51.51.51.51 [110/20] via 155.1.0.2, 00:00:10, Serial0/0/0
O E2 204.12.1.0/24 [110/20] via 155.1.45.4, 00:00:10, Serial0/1/0
                   [110/20] via 155.1.0.4, 00:00:10, Serial0/0/0
     155.1.0.0/16 is variably subnetted, 19 subnets, 2 masks
O IA    155.1.146.0/24 [110/65] via 155.1.45.4, 00:00:10, Serial0/1/0
                       [110/65] via 155.1.0.4, 00:00:10, Serial0/0/0
                       [110/65] via 155.1.0.1, 00:00:10, Serial0/0/0
O IA    155.1.23.0/24 [110/128] via 155.1.0.2, 00:00:10, Serial0/0/0
O       155.1.10.0/24 [110/3] via 155.1.58.8, 00:00:10, FastEthernet0/0
O       155.1.8.0/24 [110/2] via 155.1.58.8, 00:00:10, FastEthernet0/0
O IA    155.1.9.0/24 [110/67] via 155.1.0.3, 00:00:10, Serial0/0/0
O IA    155.1.13.0/24 [110/128] via 155.1.0.1, 00:00:10, Serial0/0/0
         
Rack1R5#