Multi Area configure OSPF routing in Bangla using cisco packet tracer 2022 Tutorial 1

OSPF:open shortest Path first Administrative distance-110 shortest path calculation algorithm:Dijsktra OSPF Router Types: DR-Desginated router BDR-Backup Designated Router ABR-Area Borader Router ASBR-Autonomus SYstem Boundary Router AREA NSSA Totally Stubby area LSA -Link State Advertisement Total LSA TYpes-7 LSA1- --LSA7 DR: DR router will send link state information to all routers in the multiaccess network instead of each router send information to each other. in case DR failure, then BDR will play role for DR. How to setup priority in ospf: Router(config)#interface gigabitEthernet 0/0 Router(config-if)#ip ospf priority 100 To refresh ospf: Router#clear ip ospf process Trouble shoot Router#sh ip ospf database Router#sh ip ospf neighbor AREA-0 BACKBONE or Transit area LoopBack Address setup on each router Router(config)#interface loopback 0 Router(config-if)#ip address 192.168.255.254 255.255.255.255 ============================ OSPF configuration: Router 1 Router(config)#router ospf 100 Router(config-router)#router-id 192.168.255.254 Router(config-router)#network 192.168.11.0.16 0.0.0.3 area 0 Router(config-router)#network 192.168.11.20 0.0.0.3 area 0 Router 2 Router(config)#router ospf 100 Router(config-router)#router-id 192.168.255.252 Router(config-router)#network 192.168.11.16 0.0.0.3 area 0 Router(config-router)#network 192.168.11.24 0.0.0.3 area 0 Router(config-router)#network 192.168.3.0 0.0.0.255 area 0 Router 3 Router(config)#router ospf 100 Router(config-router)#router-id 192.168.255.253 Router(config-router)#network 192.168.11.20 0.0.0.3 area 0 Router(config-router)#network 192.168.11.24 0.0.0.3 area 0 Router(config-router)#network 192.168.4.0 0.0.0.255 area 0