TDC 365 – Lab #3 NET 365 Lab #1 – OSPF Lab ANSWERS DOCUMENT Due Monday, October 5th, 2020 by 11:59 pm Your Name: You should read the Lab #1 Assignment Document before reading this one. You can type...

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TDC 365 – Lab #3 NET 365 Lab #1 – OSPF Lab ANSWERS DOCUMENT Due Monday, October 5th, 2020 by 11:59 pm Your Name: You should read the Lab #1 Assignment Document before reading this one. You can type your answers into this document or create a separate one. When complete, save the completed Answers file as PDF and submit for your Lab #1 assignment on D2L, along with your Packet Tracer PKT file. IP Subnet Design Enter the Subnet information for all lab subnets into Table #1 below. The “Valid Host IP” addresses are assignable IP addresses. Table #1: IP Subnet Design Subnet Name Subnet ID (network address and /n) Size = 2[32-n] First Valid Host IP Last Valid Host IP LA Subnet NY Subnet F-Link G-Link S-Link 1 S-Link 2 IP Address Plan Now, based on your IP Subnet Design above and the network diagram, assign a specific IP address and subnet mask to each interface and enter it into the table below. Table #2: IP Address Plan Device Interface IP Address Mask R1 Fa0/0 R1 Fa0/1 R1 S0/1/0 R2 S0/1/0 R2 Fa0/0 R2 Gi0/2/0 R3 Gi0/2/0 R3 S0/1/0 R4 Fa0/0 R4 S0/1/0 LA Host NY Host Lab Implementation Now, follow directions in the Lab #1 Assignment document to implement the lab network. Answer questions in each part below only when instructed to do so in the Assignment document. Part 3.1 Questions: 1. On LA Host, ping to NY Host. Paste results here.` 2. On LA Host, tracert to NY Host. Paste results here. a. Does this packet follow the 3-hop path (across S-Link 1) or the 5-hop path (across S-Link 2)? 3. On R1, execute show ip route. Paste results here. a. Do you see 10 IP subnets (LA Subnet, NY Subnet, all 4 Links, all 4 Loopback0s) in this routing table? (If not, go back and troubleshoot). b. How many routes are shown to destination 22.3.3.3/32? Why is here more than 1 route to this destination? 4. On Router R1, execute traceroute 22.3.3.3 and paste results here. 5. On Router R1, execute show ip protocol and paste results here. 6. On Router R1, execute show ip ospf neighbor and paste results here. a. Which router (R1 or R4) is the designated router for the F-Link subnet? 7. Using the show ip ospf interface command, where is an interface name, tell me the OSPF cost of each of these links: a. OSPF Cost of F-Link = b. OSPF Cost of S-Link 1 = c. OSPF Cost of G-Link = d. OSPF Cost of S-Link 2 = Now, go back to Lab #1 Assignment and perform Step #6 of the Network Implementation and Testing before continuing with Part 3.2. Part 3.2 Questions: 8. On LA Host, tracert to NY Host. Paste results here. a. Does this packet follow the 3-hop path (across S-Link 1) or the 5-hop path (across S-Link 2)? Why? 9. On R1, execute show ip route. Paste results here. a. What changes do you see in the R1 routing table, compared with your screenshot for #3 above? b. How many routes are shown to destination 22.3.3.3/32? 10. On Router R1, execute traceroute 22.3.3.3 and paste results here. 11. Using the show ip ospf interface command, where is an interface name, tell me the OSPF cost of each of these links: a. OSPF Cost of F-Link = b. OSPF Cost of S-Link 1 = c. OSPF Cost of G-Link = d. OSPF Cost of S-Link 2 = *** Now, on each of the 4 routers, go into OSPF router configuration mode (router ospf 100) and execute auto-cost reference-bandwidth 1000 to change the Reference Bandwidth for calculating OSPF link costs to 1000 Mbps (so Link costs are now calculated as 1,000,000,000 / BW) *** 12. On R1, execute show ip route. Paste results here. a. What changes do you see in the R1 routing table, compared with your screenshot for #9 above? 13. Using the show ip ospf interface command, where is an interface name, tell me the OSPF cost of each of these links: a. OSPF Cost of F-Link = b. OSPF Cost of S-Link 1 = c. OSPF Cost of G-Link = d. OSPF Cost of S-Link 2 = That’s all for Lab #1!! You should submit 2 documents on D2L: a. A copy of completed Answers document, saved as PDF. b. A copy of your Packet Tracer PKT file. NET 365 Lab #1 Answers© Greg Brewster 2020Page 3 TDC 365 – Lab #3 NET 365 Lab #1 Assignment © Greg Brewster 2020 Page 1 NET 365 Lab #1 – OSPF Lab ASSIGNMENT DOCUMENT Due Monday, October 5th, 2020 by 11:59 pm Note there is a separate Lab #1 Answers document that accompanies this assignment. You should type all answers into an Answers document and submit that according to instructions. You will implement and test this network using Cisco Packet Tracer software, starting with file “NET365-Lab1.pkt”. Follow the Network Implementation and Testing instructions below, then fill in Lab #1 Answers document by answering questions and pasting screenshots into the Answers Document when directed to do so. The Lab #1 Network consists of two user sites – one in Los Angeles (LA Subnet) and one in New York (NY Subnet), connected across a network of 4 routers. S-Links are serial links using serial cables. The F-Link is a 100 Mbps FastEthernet link using copper cable. The G-Link is a 1 Gbps link using fiber optic cable. Fa0/0LA Subnet NY Host LA Host Gi0/2/0 G-Link Gi0/2/0 S0/1/0 S0/1/0S0/1/0 R1 R2 S0/1/0 R4 DCE DCE Fa0/1 Fa0/0 F-Link R3 NY Subnet Fa0/0 Lab #1 Network Diagram IP Addressing Requirements ** The value of in any IP address should be replaced by your Student Number from the table in General Course Information under Content. ** • LA Subnet – 22.22..0/24 LA Host IP address is 22.22.. • NY Subnet – 172.11.5.16/28 NY Host IP address is 172.11.5.18 • F-Link – 122..0.4/30 NET 365 Lab #1 Assignment © Greg Brewster 2020 Page 2 • G-Link – 122..0.8/30 • S-Link 1 – 200.0.0.4/30 • S-Link 2 – 200.0.0.8/30 • R1 Loopback0 = 22.1.1.1/32 • R2 Loopback0 = 22.2.2.2/32 • R3 Loopback0 = 22.3.3.3/32 • R4 Loopback0 = 22.4.4.4/32 Each of the 2 S-Link subnets contains two assignable IP addresses. The DCE interface should always be assigned the higher IP in its subnet. On all routers, the Fa0/0 interface must be assigned the first valid IP in its subnet and the Fa0/1 interface must be assigned the second valid IP in its subnet. On G-Link the R2 end of the link must be assigned the higher IP address. Go fill out Table #1 and Table #2 in your Answers document. If you want me to check your Table #1 and Table #2 values before proceeding, e-mail these 2 tables to me and I will respond within 24 hours. Network Implementation and Testing 1. Implement the network shown in the diagram: a. Connect all cables. Be sure to use the correct cable types for each link. b. Set hostname on each router and switch to the device name followed by your initials (like “R1-GB”). c. Configure all interface IPs on hosts and routers. Be sure to configure the Loopback0 (or Lo0) interface IP on each router. Be sure to configure clock rate on DCE ends. Remember “no shutdown” on router interfaces. Remember to set default gateway IPs on Hosts. 2. Verify IP address configuration: a. Execute “show ip int brief” on each router to make sure that all interfaces have correct IP and mask assigned. b. Make sure you can successfully ping from each host to its default gateway. c. Make sure you can successfully ping from each router to each of its 1-hop neighbor routers. d. Execute a “show ip route” on each router and make sure that each of its directly connected subnets is shown in the routing table. 3. Activate OSPF with process number 100 on each of the 4 routers a. Do not set any Router IDs. The routers will use their Loopback0 IPs as Router IDs automatically. b. On each router, activate OSPF on all interfaces that have IP addresses, including Loopback0 interfaces. c. Configure the following 6 interfaces as passive interfaces: Fa0/0 on R1, Fa0/0 on R2, all 4 Loopback0 interfaces. d. Execute a show ip protocol on each router to verify that OSPF is active, all directly-connected networks are shown and all 4 Router IDs are shown. NET 365 Lab #1 Assignment © Greg Brewster 2020 Page 3 e. Execute a show ip ospf neighbor on each router to verify that it has 2 OSPF neighbors. 4. Do not change any interface Bandwidths or OSPF costs (leave everything as default). 5. Complete Answers Part 3.1 6. After completing all Part 3.1 Answers, you will now set the Bandwidth values for each Serial interface to match its clock rate, as follows: a. On routers R1 and R2, go into interface configuration mode on interface S0/1/0 and execute bandwidth 2000, which sets the bandwidth to 2000 Kbps (or 2 Mbps) at both ends of S-Link 1. b