Task 4.9

Hello Experts ..

Task 4.9 : ospf

• Configure OSPF area 0 between SW1 & SW4 and SW3 & SW4.
• Configure OSPF area 0 on SW3’s interface VL3.

Non of the tasks asked us to configure ospf on SW1 except this task .. also non of them asked to configure it on vlan 57 ..

on the SG verification .. this is the output of show ip route ospf on SW1

Rack1SW1#show ip route ospf
163.1.0.0/24 is subnetted, 9 subnets
O 163.1.35.0 [110/128] via 163.1.13.3, 00:26:15, Serial1/1      }
O 163.1.54.0 [110/11175] via 163.1.15.5, 00:26:15, Tunnel0    }
O 163.1.4.0 [110/11185] via 163.1.15.5, 00:26:15, Tunnel0      }
O 163.1.5.0 [110/11121] via 163.1.15.5, 00:26:15, Tunnel0      }
150.1.0.0/16 is variably subnetted, 7 subnets, 3 masks             }
O 150.1.4.0/23 is a summary, 00:26:15, Null0                          <---- how we got these routes ??
O E2 150.1.3.0/24 [110/20] via 163.1.13.3, 00:26:15, Serial1/1 }
O E2 150.1.2.0/24 [110/20] via 163.1.12.2, 00:26:15, Serial1/0 }
O 150.1.5.5/32 [110/11112] via 163.1.15.5, 00:26:15, Tunnel0 }
O 150.1.4.4/32 [110/11176] via 163.1.15.5, 00:26:15, Tunnel0 }

can you guide me in this plz ..

thank you

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