ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3.docx (2)

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Troubleshooting Single-Area OSPFv2 and OSPFv3 Introduction Open Shortest Path First (OSPF) is a link-state routing protocol for IP networks. OSPFv2 is defined for IPv4 networks, and OSPFv3 is defined for IPv6 networks. OSPFv2 and OSPFv3 are completely isolated routing protocols, changes in OSPFv2 do not affect OSPFv3 routing, and vice versa. Objective(s) In this lab the student will: ● Troubleshoot Layer 3 Connectivity ● Troubleshoot OSPFv2 ● Troubleshoot OSPFv3 Equipment/Supplies Needed If working in a physical environment: ● 3 Routers (Cisco 1941 with Cisco IOS Release 15.2(4) M3 universal image or comparable) ● 3 Cisco 2960 Switches (Software (C2960-LANBASE-M), Version 12.2) ● 3 PCs (Windows 7, Vista, or XP with terminal emulation program, such as TeraTerm) ● Console cables to configure the Cisco IOS devices via the console ports ● Ethernet and serial cables as shown in the topology If working online: ● Your Computer workstation ● Cisco Packet Tracer (online) ● Troubleshooting Single-Area OSPFv2 and OSPFv3.pkt file Addressing Table Device OSPF Router ID Interface IP Address Default Gateway ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 1

R1 1.1.1.1 G0/0 192.168.1.1/24 2001:DB8:ACAD:A::1/64 FE80::1 link-local N/A S0/0/0 192.168.12.1/30 2001:DB8:ACAD:12::1/64 FE80::1 link-local N/A S0/0/1 192.168.13.1/30 2001:DB8:ACAD:13::1/64 FE80::1 link-local N/A R2 2.2.2.2 G0/0 192.168.2.1/24 2001:DB8:ACAD:B::2/64 FE80::2 link-local N/A S0/0/0 192.168.12.2/30 2001:DB8:ACAD:12::2/64 FE80::2 link-local N/A S0/0/1 192.168.23.1/30 2001:DB8:ACAD:23::2/64 FE80::2 link-local N/A R3 3.3.3.3 G0/0 192.168.3.1/24 2001:DB8:ACAD:C::3/64 FE80::3 link-local N/A S0/0/0 192.168.13.2/30 2001:DB8:ACAD:13::3/64 FE80::3 link-local N/A S0/0/1 192.168.23.2/30 2001:DB8:ACAD:23::3/64 FE80::3 link-local N/A PC-1 NIC 192.168.1.3/24 2001:DB8:ACAD:A::A/64 192.168.1.1 FE80::1 PC-2 NIC 192.168.2.3/24 2001:DB8:ACAD:B::B/64 192.168.2.1 FE80::2 PC-3 NIC 192.168.3.3/24 2001:DB8:ACAD:C::C/64 192.168.3.1 FE80::3 ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 2

Topology Procedure Perform the steps in this lab in the order they are presented to you. Answer all questions and record the requested information in a file. Note: All routers in the provided file have the following passwords. Privileged Exec: security Console/telnet/vty: cyber Part 1: Troubleshoot Layer 3 Connectivity In Part 1, you will verify that Layer 3 connectivity is established on all interfaces. You will need to test both IPv4 and IPv6 connectivity for all device interfaces. Step 1: Verify that the interfaces listed in the Addressing Table are active and configured with the correct IP address information. ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 3

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1. Issue the show ip interface brief command on all routers to verify that the interfaces are in an up/up state. Record your findings. R1-G0/0, 0/1, and Vlan1 is down. R3- G0/0,0/1, S0/0/1 and Vlan1 are all down R2-G0/1, S0/0/1, and Vlan1 are all down. G0/1 admin down, Vlan1 admin down, and S0/0/1 is just down . Link local for G0/0 is incorrect and IPV6 address for s0/0/1 is incorrect. 2. Issue the show interface or show run command to verify IP address assignments on all router interfaces. Compare the interface IP addresses against the Addressing Table and verify the subnet mask assignments. For IPv6, verify that the link-local address has been assigned. Record your findings. With R1 – every interface that should be working has the /24 subnet mask. G0/0 is right but hasn’t been turned on yet and the other interfaces are set up incorrectly and not turned on. R2 – S0/0/1 is down and has not been set up yet. R3- S0/0/1 hasn’t been turned on yet but the address is correct. S0/0/0 has a wrong digit in the ip4 address but is working. G0/0 is down and hasn’t been set up. ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 4

Resolve all problems that are found. Record the commands used to correct the issues. Record the commands No ip address/no ipv6 address Resubmit ip address and link local addresses Using the ping command, verify that each router has network connectivity with the serial interfaces on the neighbor routers. Verify that the PCs can ping their default gateways. If problems still exist, continue troubleshooting Layer 3 issues. Part 2: Troubleshoot OSPFv2 Step 1: Test IPv4 end-to-end connectivity. From each PC host, ping the other PC hosts in the topology to verify end-to-end connectivity. a. Ping from PC-1 to PC-2. Were the pings successful? ____No______ b. Ping from PC-1 to PC-3. Were the pings successful? ____No_______ c. Ping from PC-2 to PC-3. Were the pings successful? ____No_______ Step 2: Verify that all interfaces are assigned to OSPFv2 area 0 on R1 1. Issue the show ip protocols command to verify that OSPF is running and that all networks are advertised in area 0. Verify that the router ID is set correctly. Record your findings. OSPF IPV6 was not running on R3. Settings on R1/and R2 were mostly correct with minor mistakes. Networks on R3 were not set up. ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 5

2. Make the necessary changes to the configuration on R1 based on the output from the show ip protocols command. Record the commands used to correct the issues. Record the commands I used the clear ip ospf process Router ospf 1-> router-id 1.1.1.1 ipv6 ospf 1 area 0 on all interfaces 3. Issue the clear ip ospf process command if necessary. 4. Re-issue the show ip protocols command, verify that your changes had the desired effect, all interfaces are listed as OSPF networks assigned to area 0 , and verify that G0/0 is a passive interface 5. Resolve any problems discovered on R1. List any additional changes made to R1. If no problems were found on the device, then respond with “no problems were found”. Step 3: Verify that all interfaces are assigned to OSPFv2 area 0 on R2 1. Issue the show ip protocols command to verify that OSPF is running and that all networks are being advertised in area 0. Verify that the router ID is set correctly. Record your findings. ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 6

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Router IDs were not set up on any of the routers. 2. Make the necessary changes to the configuration on R2 based on the output from the show ip protocols command. Record the commands used to correct the issues Record the commands Clear ip ospf process Show ipv6 protocols 3. Issue the clear ip ospf process command if necessary. 4. Re-issue the show ip protocols command to verify that your changes had the desired effect. Verify that all interfaces are listed as OSPF networks assigned to area 0 and verify that G0/0 is a passive interface. 5. Resolve any problems discovered on R2. List any additional changes made to R2. If no problems were found on the device, then respond with “no problems were found”. Router-id should be 2.2.2.2. Under ipv4 and ipv6, it shows 2.2.2.2 but the lab won’t confirm it’s correct. I cleared ospf settings and set up again but hasn’t worked. Step 4: Verify that all interfaces are assigned to OSPFv2 area 0 on R3. ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 7

1. Issue the show ip protocols command to verify that OSPF is running and that all networks are being advertised in area 0. Verify that the router ID is set correctly as well Record your findings. Router IDs were incorrect. Networks on R3 were not set up OSPF3 is setup 2. Make the necessary changes to the configuration on R3 based on the output from the show ip protocols command. Record the commands used to correct the issues. Record the commands Ipv6 unicast-routing, ipv6 router ospf 1 Network 192.168.23.0 0.0.0.3 area 0 Network 192.168.13.0 0.0.0.3 area 0 3. Issue the clear ip ospf process command if necessary. 4. Re-issue the show ip protocols command to verify that your changes had the desired effect. Verify that all interfaces are listed as OSPF networks assigned to area 0 and verify that G0/0 is a passive interface. 5. Resolve any problems discovered on R3. List any additional changes made to R3. If no problems were found on the device, then respond with “no problems were found”. Step 5: Verify OSPF neighbor information. ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 8

1. Issue the show ip ospf neighbor command on all routers to view the ospf neighbor information. Step 6: Verify OSPFv2 Routing Information 1. Issue the show ip route ospf command to verify that each router has OSPFv2 routes to all non-adjoining networks. Are all OSPFv2 routes available? Yes If any OSPFv2 routes are missing, what is missing? Was missing routes from R3 Step 7: Verify IPv4 end-to-end connectivity. From each PC, verify that IPv4 end-to-end connectivity exists. PCs should be able to ping the other PC hosts in the topology. If IPv4 end-to-end connectivity does not exist, then continue troubleshooting to resolve any remaining issues. Part 3: Troubleshoot OSPFv3 In Part 4, you will troubleshoot OSPFv3 problems and make the necessary changes needed to establish OSPFv3 routes and end-to-end IPv6 connectivity. Note: LAN (G0/0) interfaces should not advertise OSPFv3 routing information, but routes to these networks should be contained in the routing tables. Step 1: Test IPv6 end-to-end connectivity. From each PC host, ping the IPv6 addresses of the other PC hosts in the topology to verify IPv6 end-to-end connectivity. Step 2: Verify that IPv6 unicast routing has been enabled on all routers ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 9

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1. An easy way to verify that IPv6 routing has been enabled on a router is to use the show run and look for the ipv6 unicast-routing command. The ipv6 unicast- routing command displays if IPv6 routing has been enabled. 2. If IPv6 unicast routing is not enabled on one or more routers, enable it now. Record the commands used to correct the issues. Step 3: Verify that all interfaces are assigned to OSPFv3 area 0 on R1 1. Issue the show ipv6 protocols command and verify that the router ID is correct. Also verify that the expected interfaces are displayed under area 0. Note: If no output is generated from this command, then the OSPFv3 process has not been configured. Record your findings. 2. Make the necessary configuration changes to R1. Record the commands used to correct the issues. Record the commands 3. Issue the clear ipv6 ospf process command if necessary 4. Re-issue the show ipv6 protocols command to verify that your changes had the desired effect. 5. Verify that all interfaces are listed as OSPF networks assigned to area 0. Verify that the G0/0 interface is set not to advertise. 6. Resolve any problems discovered on R1. List any additional changes made to R1. If no problems were found on the device, then respond with “no problems were found”. ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 10

No problems found Step 4: Verify that all interfaces are assigned to OSPFv3 area 0 on R2. 1. Issue the show ipv6 protocols command and verify the router ID is correct. Also verify that the expected interfaces display under area 0. Note: If no output is generated from this command, then the OSPFv3 process has not been configured. Record your findings. IPv6 Routing Protocol is "connected" IPv6 Routing Protocol is "ND" IPv6 Routing Protocol is "ospf 1" Interfaces (Area 0) Serial0/0/0 GigabitEthernet0/0 Serial0/0/1 2. Make the necessary configuration changes to R2. Record the commands used to correct the issues 3. Issue the clear ipv6 ospf process command if necessary. 4. Re-issue the show ipv6 protocols command to verify that your changes had the desired effect. 5. Verify that all interfaces are listed as OSPF networks assigned to area 0. Verify that the G0/0 interface is set not to advertise. 6. Resolve any problems discovered on R2. List any additional changes made to R2. If no problems were found on the device, then respond with “no problems were found”. ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 11

7. List any additional changes made to R2. If no problems were found on the device, then respond with “no problems were found”. Step 5: Verify that all interfaces are assigned to OSPFv3 area 0 on R3 1. Issue the show ipv6 protocols command and verify that the router ID is correct. Also verify that the expected interfaces display under area 0. Note: If no output is generated from this command, then the OSPFv3 process has not been configured. Record your findings 2. Make the necessary configuration changes to R3. Record the commands used to correct the issues. Record the commands 3. Issue the clear ipv6 ospf process command if necessary. 4. Re-issue the show ipv6 protocols command to verify that your changes had the desired effect. 5. Verify that all interfaces are listed as OSPF networks assigned to area 0. Verify that the G0/0 interface is set not to advertise. 6. Resolve any problems discovered on R3. List any additional changes made to R3. If no problems were found on the device, then respond with “no problems were found”. 7. List any additional changes made to R3. If no problems were found on the device, then respond with “no problems were found”. ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 12

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Step 6: Verify that all routers have correct neighbor adjacency information 1. Issue the show ipv6 ospf neighbor command to verify that adjacencies have formed between neighboring routers. 2. Resolve any OSPFv3 adjacency issues that still exist Step 7: Verify OSPFv3 routing information. a. Issue the show ipv6 route ospf command, and verify that OSPFv3 routes exist to all non-adjoining networks  I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary  - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2  ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2  D - EIGRP, EX - EIGRP external  2001:DB8:ACAD:A::/64 [110/65]  via FE80::1, Serial0/0/0  2001:DB8:ACAD:B::/64 [110/65]  via FE80::2, Serial0/0/1  2001:DB8:ACAD:12::/64 [110/128]  via FE80::1, Serial0/0/0  via FE80::2, Serial0/0/1 Questions Are all OSPFv3 routes available? Yes If any OSPFv3 routes are missing, what is missing? One route was missing to R2. b. Resolve any routing issues that still exist. ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 13

Step 8: Verify IPv6 end-to-end connectivity. From each PC, verify that IPv6 end-to-end connectivity exists. PCs should be able to ping each interface on the network. If IPv6 end-to-end connectivity does not exist, then continue troubleshooting to resolve remaining issues. Reflection Why would you troubleshoot OSPFv2 and OSPFv3 separately? OSPFv2 and OSPFv3 are different routing protocols, and changes to one do not affect the other. OSPFv3 is strictly for ipv6 and uses the same commands (for the most part) which the inclusion of ipv6. Submit Your Work: Submit all text files, screenshots, or answers to questions to your instructor Using the most appropriate method below. Packet Tracer : Submit Packet Tracer file as well as your text file with your findings and notes. Rubric Checklist/Single Point Mastery Concerns Working Towards Proficiency Criteria Standards for This Competency Accomplished Evidence of Mastering Competency Criteria #1:Verify that all interfaces are assigned to OSPFv2 area 0 on R1(10 pts) Discover issue on Router 1 and correct the problem. (OSPFv2) (10 pts) Criteria #2: Discover issue on Router 2 and correct the problem (OSPFv2) (10 pts) Discover issue on Router 2 and correct the problem (OSPFv2) (10 pts) Criteria #3: Discover issue on Router 3 and correct the problem (OSPFv2) (10 pts) Discover issue on Router 3 and correct the problem (OSPFv2) (10 pts) Criteria #4: Verify that IPv6 unicast routing has been enabled on all routers (10 pts) Verify that IPv6 unicast routing has been enabled on all routers (10 pts) ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 14

Criteria #5: Verify that all interfaces are assigned to OSPFv3 area 0 on R3 (10 pts) Verify that all interfaces are assigned to OSPFv3 area 0 on R3 (10 pts) Criteria #6: Test connectivity between all remote networks using ping. (10 pts) Test connectivity between all remote networks using ping. (10 pts) 3 remote networks (3.3 pts) Criteria #7: Submit instructions document with lab questions and documentation completed. (40 pts) Criteria #5: Submit instructions document with lab questions and documentation completed.(40 pts) ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3 15

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ITNW 2312 Lab 4.1.1b Troubleshooting Single-Area OSPFv2 and OSPFv3.docx (2)

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