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Nxll28 ospf iii
1. The document describes tasks for configuring OSPF routing on a network topology. 2. Key configurations include enabling OSPF on each router, configuring authentication for Area 1, summarizing loopback routes on R4, and preventing Area 3 routers from receiving routes from other areas. 3. PAT is configured on routers R1 and R11 to allow traffic from multiple private networks to use a single public IP address.
In this document
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Introduction to configuring OSPF routing protocols with specific tasks and areas to focus on.
Detailed commands for configuring OSPF on routers R1, R2, and R3 in Area 3.
OSPF configuration commands for routers R4, R5, R6, R7, R8, R9, R10, and R11.
Tasks involving OSPF route receipt, configuring PAT on R1 and R11, and adjusting NAT settings.
Adjusting hello and dead intervals for OSPF and ensuring best path selection on R9.
Configuring MD5 authentication in OSPF, advertising loopbacks, and ensuring route restrictions.
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Nxll28 ospf iii
- 1. Lab 28: OSPF-III Task 1.Configure IP Address as per given in topology. 2. Configure OSPF Routing Protocol as per given in topology. 3. Configure OSPF area 3 without using network command. (Do possible configuration) 4. Make sure all routers receive all routes. 5. Configure PAT on R1 and R11. 6. Change Hello and hold interval to 15 and 60 respectively in Area 10. 7. Best path selection, R9 reach 54.0.0.2 via R6. 8. OSPF Area 1 used MD5 Authentication using password "N3tW@xL@b". 9. R1 Advertise all loopbacks on R4 with single route. 10. Make sure Area 3 Routers not received others area routes in their routing table. (Do possible configuration) Figure 1 Topology
- 2. Lab 28: OSPF-III Solution Task 2: Configure OSPF Routing Protocol as per given in topology. R1 router ospf 1 router-id 1.1.1.1 exit int se0/0 ip ospf 1 area 3 exit int f1/0 ip ospf 1 area 3 exit int se0/1 ip ospf 1 area 3 exit R2 router ospf 1 router-id 2.2.2.2 exit int se0/0 ip ospf 1 area 3 exit int f0/0 ip ospf 1 area 3 exit int se0/1 ip ospf 1 area 3 exit
- 3. Lab 28: OSPF-III R3 routerospf 1 router-id 3.3.3.3 exit int se0/0 ip ospf 1 area 3 exit int f0/0 ip ospf 1 area 3 exit int se0/1 ip ospf 1 area 3 exit R4 router ospf 1 router-id 4.4.4.4 exit int se0/0 ip ospf 1 area 3 exit int f0/0 ip ospf 1 area 3 exit int se0/1 ip ospf 1 area 3 exit int l1 ip ospf 1 area 3 exit int l2
- 4. Lab 28: OSPF-III ipospf 1 area 3 exit int l3 ip ospf 1 area 3 exit int l4 ip ospf 1 area 3 exit R5 router ospf 1 router-id 5.5.5.5 log-adjacency-changes area 1 authentication message-digest network 54.32.78.0 0.0.0.255 area 1 exit R6 router ospf 1 router-id 6.6.6.6 log-adjacency-changes area 1 authentication message-digest network 54.32.78.0 0.0.0.255 area 1 network 114.204.65.0 0.0.0.255 area 1 exit R7 router ospf 1 router-id 7.7.7.7 log-adjacency-changes area 1 authentication message-digest area 1 virtual-link 9.9.9.9 network 45.0.84.0 0.0.0.255 area 0 network 54.32.78.0 0.0.0.255 area 1 exit
- 5. Lab 28: OSPF-III R8 routerospf 1 router-id 8.8.8.8 log-adjacency-changes area 10 virtual-link 1.1.1.1 network 34.11.78.0 0.0.0.255 area 10 network 45.21.88.0 0.0.0.255 area 4 network 60.4.100.0 0.0.0.255 area 4 network 100.251.0.0 0.0.0.255 area 4 exit R9 router ospf 1 router-id 9.9.9.9 log-adjacency-changes area 1 authentication message-digest area 1 virtual-link 7.7.7.7 network 60.4.100.0 0.0.0.255 area 4 network 100.0.0.0 0.0.0.255 area 4 network 114.204.65.0 0.0.0.255 area 1 exit R10 router ospf 1 router-id 10.10.10.10 log-adjacency-changes network 100.0.0.0 0.0.0.255 area 4 network 100.251.0.0 0.0.0.255 area 4 exit R11 router ospf 1 router-id 11.11.11.11 log-adjacency-changes network 45.21.88.0 0.0.0.255 area 4 default-information originate
- 6. Lab 28: OSPF-III Task 3: Complete in Task 2. Task 4: Make sure all routers receive all routes. R1 router ospf 1 area 10 virtual-link 8.8.8.8 exit R8 router ospf 1 area 10 virtual-link 1.1.1.1 exit R7 router ospf 1 area 10 virtual-link 9.9.9.9 exit R9 router ospf 1 area 10 virtual-link 7.7.7.7 exit Task 5: Configure PAT on R1 and R11. R1 ip access-list extended NAT permit ip 10.0.13.0 0.0.0.255 any permit ip 10.0.34.0 0.0.0.255 any permit ip 10.0.24.0 0.0.0.255 any permit ip 10.0.12.0 0.0.0.255 any permit ip 192.168.1.0 0.0.0.255 any permit ip 45.0.84.0 0.0.0.255 any permit ip 34.11.78.0 0.0.0.255 any permit ip 54.32.78.0 0.0.0.255 any permit ip 114.204.65.0 0.0.0.255 any permit ip 60.4.100.0 0.0.0.255 any permit ip 100.0.0.0 0.0.0.255 any permit ip 100.251.0.0 0.0.0.255 any
- 7. Lab 28: OSPF-III permitip 42.21.88.0 0.0.0.255 any permit ip 4.4.1.0 0.0.0.255 any permit ip 4.4.2.0 0.0.0.255 any permit ip 4.4.3.0 0.0.0.255 any permit ip 4.4.4.0 0.0.0.255 any exit int f0/0 ip nat outside exit int f0/1 ip nat inside exit int se0/0 ip nat inside exit int f1/0 ip nat inside exit int se0/2 ip nat inside exit int se0/1 ip nat inside exit ip nat inside source list NAT interface f0/0 overload R11 ip access-list extended NAT permit ip 45.21.88.0 0.0.0.255 any permit ip 100.251.0.0 0.0.0.255 any permit ip 60.4.100.0 0.0.0.255 any permit ip 100.0.0.0 0.0.0.255 any permit ip 114.204.65.0 0.0.0.255 any
- 8. Lab 28: OSPF-III permitip 54.32.78.0 0.0.0.255 any permit ip 34.11.78.0 0.0.0.255 any permit ip 45.0.84.0 0.0.0.255 any permit ip 10.0.13.0 0.0.0.255 any permit ip 10.0.34.0 0.0.0.255 any permit ip 10.0.24.0 0.0.0.255 any permit ip 10.0.12.0 0.0.0.255 any permit ip 192.168.1.0 0.0.0.255 any permit ip 4.4.1.0 0.0.0.255 any permit ip 4.4.2.0 0.0.0.255 any permit ip 4.4.3.0 0.0.0.255 any permit ip 4.4.4.0 0.0.0.255 any exit int f0/0 ip nat outside exit int f0/1 ip nat inside exit ip nat inside source list NAT interface f0/0 overload Task 6: Change Hello and hold interval to 15 and 60 respectively in Area 10. R1 int se0/2 ip ospf hello-interval 15 ip ospf dead-interval 60 exit R8 int se0/0 ip ospf hello-interval 15 ip ospf dead-interval 60 exit
- 9. Lab 28: OSPF-III Task 7: Best path selection, R9 reach 54.0.0.2 via R6. R9 int f0/0 ip ospf cost 100 exit Task 8: OSPF Area 1 used MD5 Authentication using password "N3tW@xL@b". R5 router ospf 1 area 1 authentication message-digest exit int f0/0 ip ospf message-digest-key 1 md5 N3tW@xL@b exit R6 router ospf 1 area 1 authentication message-digest exit int f0/0 ip ospf message-digest-key 1 md5 N3tW@xL@b exit R7 router ospf 1 area 1 authentication message-digest exit int f0/0 ip ospf message-digest-key 1 md5 N3tW@xL@b exit
- 10. Lab 28: OSPF-III R9 routerospf 1 area 1 authentication message-digest exit int s0/0 ip ospf message-digest-key 1 md5 N3tW@xL@b exit Task 9: R1 Advertise all loopbacks on R4 with single route. R1 router ospf 1 area 3 range 4.4.0.0 255.255.248.0 exit Task 10: Make sure Area 3 Routers not received others area routes in their routing table. (Do possible configuration) R1 router ospf 1 area 3 stub no-summary exit R2 router ospf 1 area 3 stub no-summary exit R3 router ospf 1 area 3 stub no-summary exit R4 router ospf 1 area 3 stub no-summary exit (Note: Verify using "sh ip route".)