h3c labs

### Step 1 Configure IP addresses for interconnection interfaces and loopback interfaces.

[R1]int g0/0/0
[R1-GigabitEthernet0/0/0]ip add 10.0.13.1 24
[R1-GigabitEthernet0/0/0]int l0
[R1-LoopBack0]ip add 10.0.1.1 24



[R2]int g0/0/0
[R2-GigabitEthernet0/0/0]ip add 10.0.23.2 24
[R2-GigabitEthernet0/0/0]int l0
[R2-LoopBack0]ip add 10.0.2.2 24

[R3]int g0/0/0
[R3-GigabitEthernet0/0/0]ip add 10.0.13.3 24
[R3-GigabitEthernet0/0/0]int g0/0/1
[R3-GigabitEthernet0/0/1]ip add 10.0.34.3 24
[R3-GigabitEthernet0/0/1]int g0/0/2
[R3-GigabitEthernet0/0/2]ip add 10.0.23.3 24
[R3-GigabitEthernet0/0/2]int l0
[R3-LoopBack0]ip add 10.0.3.3 24

[R4]int g0/0/0
[R4-GigabitEthernet0/0/0]ip add 10.0.34.4 24
[R4-GigabitEthernet0/0/0]int g0/0/1
[R4-GigabitEthernet0/0/1]ip add 10.0.45.4 24
[R4-GigabitEthernet0/0/1]int l0
[R4-LoopBack0]ip add 10.0.4.4 24

[R5]int g0/0/0
[R5-GigabitEthernet0/0/0]ip add 10.0.45.5 24
[R5-GigabitEthernet0/0/0]int l0
[R5-LoopBack0]ip add 10.0.5.5 24

<R3>ping 10.0.13.1
<R3>ping 10.0.23.2
<R3>ping 10.0.34.4
<R5>ping 10.0.45.4

Step 2 Configure multi-area OSPF

[R1]ospf 1 router-id 10.0.1.1
[R1-ospf-1]area 2
[R1-ospf-1-area-0.0.0.2]network 10.0.1.1 0.0.0.0
[R1-ospf-1-area-0.0.0.2]network 10.0.13.1 0.0.0.0

[R2]ospf 1 router-id 10.0.2.2
[R2-ospf-1]area 3
[R2-ospf-1-area-0.0.0.3]network 10.0.23.2 0.0.0.0

[R3]ospf 1 router-id 10.0.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 10.0.34.3 0.0.0.0
[R3-ospf-1-area-0.0.0.0]network 10.0.3.3 0.0.0.0
[R3-ospf-1-area-0.0.0.0]aera 2
[R3-ospf-1-area-0.0.0.2]network  10.0.13.3 0.0.0.0
[R3-ospf-1-area-0.0.0.2]area 3
[R3-ospf-1-area-0.0.0.3]network 10.0.23.3 0.0.0.0

[R4]ospf 1 router-id 10.0.4.4
[R4-ospf-1]area 0
[R4-ospf-1-area-0.0.0.0]network 10.0.4.4 0.0.0.0
[R4-ospf-1-area-0.0.0.0]network 10.0.34.4 0.0.0.0    
[R4-ospf-1-area-0.0.0.0]area 1
[R4-ospf-1-area-0.0.0.1]network 10.0.45.4 0.0.0.0

[R5]ospf 1 router-id 10.0.5.5
[R5-ospf-1]area 1
[R5-ospf-1-area-0.0.0.1]network 10.0.45.5 0.0.0.0

Step 3 Verify the multi-area OSPF configuration.

<R3>display ospf peer
[R5]dis ospf peer
<R3>display ospf routing

Step 4 Import AS external routes into the OSPF routing tables.

[R5-ospf-1]import-route direct

[R2]ip route-static 0.0.0.0 0.0.0.0 10.0.2.2
[R2]undo ip route-static 0.0.0.0 0.0.0.0 10.0.2.2
[R2]ip route-static 0.0.0.0 0 null 0

[R2]ospf 1
[R2-ospf-1]default-route-advertise type 1 cost 20

​ display ospf routing 0.0.0.0 0 display ospf routing 10.0.5.5 24

<R3>ping 10.0.5.5
<R3>ping 10.0.2.2

​ ### Step 5 Configure area 2 as a stub area display ospf routing

[R1-ospf-1-area-0.0.0.2]stub
[R3-ospf-1-area-0.0.0.2]stub

<R1>display ospf routing
<R1>display ospf lsdb

[R3-ospf-1-area-0.0.0.2]stub no-summary
<R1>dis ospf routing
<R1>dis ospf lsdb

​

Step 6 Configure area 1 as an NSSA

<R4>display ospf routing
<R5>display ospf routing

[R4-ospf-1-area-0.0.0.1]nssa
[R5-ospf-1-area-0.0.0.1]nssa

<R5>display ospf routing
<R5>display ospf lsdb
<R4>display ospf routing

Step 7 Observe the impact of the NSSA on OSPF.

<R4>display ospf
<R4>display ospf lsdb nssa 10.0.5.0
<R4>display ospf lsdb ase 10.0.5.0