Lab3 Instructions NET413 Hints

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Oct 30, 2023

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NET 413 Lab 3 – Per-VLAN STP and DHCP HINTS INSTRUCTIONS Due Sunday, Oct. 29, 2023 by 11:59 pm 50 points Introduction Packet Tracer to start file TDC363-lab3.pkt. There is a separate Lab 3 Answer Sheet that accompanies this assignment. Type your answers into the Answer Sheet and submit it D2L. Use your assigned Student Number , marked <SN> , from Lab 2 and as specified in the figures below. Everywhere you see “<SN>” you should substitute your Student Number. BEFORE you start configuring any equipment you should do the following: 1. Type information about each of the IP subnets in the network diagram into Table 1 in your Answer Sheet. 2. Type static IP address information into Table 2 in your Answer Sheet. All the non-Host IP addresses are static (shown in the diagram), while the three Host IP addresses will be determined dynamically by DHCP after the DHCP service is configured on the L3 switch S1. Find the MAC address of each interface listed in Table 2 (using show interface or host ipconfig information) and type each MAC address into Table 2 in your Answer Sheet. Implement the Lab 3 Network. Follow the directions below, test your network, and then follow the directions in Part 3 of the Lab #3 Answers document. Lab 3 Network Diagram NET 413 Lab 3 Assignment Page 1 of 7

Network Description The Lab 3 Physical Network includes 3 Hosts, 2 Layer 2 Switches (S2 and S3), 1 Layer 3 Switch (S1) and 1 Router. The Logical Network contains 2 IPv4 subnets: 1. Student subnet 200.<SN>.1.0/26 contains 2 Hosts, named Student1 (Host 2) and Student2 (Host 3). This subnet is carried on VLAN 10 with default gateway IP 200.<SN>.1.1 on Switch S1 VLAN 10 SVI. Student1 and Student2 obtain Student subnet IP addresses using DHCP. 2. Faculty subnet 200.<SN>.2.0/27 contains 1 Host named Faculty1 (Host 1) and a Faculty router named Faculty-Rtr (R1). This subnet is carried on VLAN 20 with default gateway IP 200.<SN>.2.1 on Switch S1 VLAN 20 SVI. Faculty-Rtr Fa0/0 has static IP address 200.<SN>.2.5. Faculty1 obtains a Faculty subnet IP address using DHCP. Switches S1, S2 and S3 will run Per-VLAN Rapid Spanning Tree Protocol (PVRST+). Given there is a loop in the network topology, PVRST+ will calculate a separate spanning tree for each VLAN and will block one port (interface) on one switch for each VLAN. *********** The commands listed in the following sections are taken from the output of “show running- config” command on the devices in my full implementation of Lab 3. Various obvious commands are not shown, e.g., “show”, “ping”, “tracert”. These have been used on the other 2 labs. I assume you are familiar with these. *********** Lab Implementation 1. Connect cables between interfaces as indicated in the diagram. Be sure you use the proper type of cable (straight-through or crossover) for each connection. Be sure you use the specific interfaces on switches and routers shown in the diagram. 2. Set Hostnames on all routers and switches to the device name plus your initials, like “Faculty-Rtr-DB”. This is for Switch 1. Use similar command on each device. 3. For each Host (Host 1, Host 2, Host 3), set it to get an IP address as a DHCP client. Go to each Host Config tab, then click Settings under GLOBAL and click “DHCP” button under Gateway/DNS IPv4, then click FastEthernet0 under INTERFACE and click “DHCP” button under IP Configuration. NET 413 Lab 3 Assignment Page 2 of 7

4. On Faculty-Rtr: a. Configure its static IP address and subnet mask on Fa0/0. Do not forget “no shutdown” b. Configure a static default route in global config mode with this command: ip route 0.0.0.0 0.0.0.0 200.<SN>.2.1 5. Configure Switches: a. Create VLANs 10 and 20 on each switch. VLAN names are: (see slide 48 in 3VLANs) i. VLAN 10: Students ii. VLAN 20: Faculty b. Set VLAN Access ports ( switchport mode access ) so that: NET 413 Lab 3 Assignment Page 3 of 7

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i. Host 2 and Host 3 are connected to access ports on VLAN 10 For Host 2 on S1 For Host 3 on S3 ii. Host 1 and R1 are connected to access ports on VLAN 20 For Host 1 on S1 and for R1 on S2 c. On Layer 3 switch S1, you must execute switchport trunk encapsulation dot1q on trunk ports before you can set Trunk mode. d. Set Trunk mode ( switchport mode trunk ) on Fa0/4 and Fa0/5 ports on every switch. For S2 and S3 … 6. Configure STP Protocol and Determine Bridge IDs for each Switch: a. On each Switch, execute spanning-tree mode rapid-pvst . This will set the spanning tree protocol used on each switch to the Cisco Per-VLAN Rapid Spanning Tree Protocol, which is also called PVRST+ or Rapid PVST+ . This causes STP to run again. Wait about 30 seconds before doing part b. You should see the links from S1 to have green up arrows at both ends and the link between S2 and S3 to be designated on one end and blocked on the other. b. On each Switch, execute show spanning-tree vlan 10 . This will show you the Root ID (which is the Bridge ID of the Root Switch) and Bridge ID (which is the Bridge ID for NET 413 Lab 3 Assignment Page 4 of 7

the Switch where you are executing the command). Each BID value has a Priority and MAC Address part. Fill in Table 3 in the Lab 3 Answer Sheet with the Bridge ID values for S1, S2 and S3. c. On each Switch, execute show spanning-tree vlan 20 and fill in Table 4 in the Lab 3 Answer Sheet with the Bridge ID values for S1, S2 and S3. 7. Set Root Switches for each VLAN: a. On Switch S2 , execute spanning-tree vlan 10 root primary . This will make S2 the root switch for the VLAN 10 spanning tree. b. On Switch S3 , execute spanning-tree vlan 20 root primary . This will make S3 the root switch for the VLAN 20 spanning tree. c. On Switch S1, execute show spanning-tree vlan 10 and verify that the Switch S2 BID is shown as the Root ID. d. On Switch S1, execute show spanning-tree vlan 20 and verify that the Switch S3 BID is shown as the Root ID. 8. Configure Switch S1 for Layer 3 Inter-VLAN routing by: For S1, S2 and S3 …. a. Configure SVI interface VLAN10 with static IP address 200.<SN>.1.1 prefix /26. b. Configure SVI interface VLAN20 with static IP address 200.<SN>.2.1 prefix /27. c. In global configuration mode, execute ip routing to start up IP routing on S1. 9. Set up DHCP service on Switch S1: a. In global config mode, set up two DHCP excluded-address ranges: i. Exclude 200.<SN>.1.1 to 200.<SN>.1.19 NET 413 Lab 3 Assignment Page 5 of 7

ii. Exclude 200.<SN>.2.1 to 200.<SN>.2.19 b. In global config mode, create two DHCP address pools with the following names and configure the network and default-router commands in each: i. Pool DHCP-STUDENTS provides IP address and default gateway address for the Students subnet ii. Pool DHCP-FACULTY provides IP address and default gateway address for the Faculty subnet c. Go to each Host command window and execute ipconfig /renew to set a DHCP IP address for the host. If this does not work, you may need to execute ipconfig /release first and then ipconfig /renew . It does not matter what specific IP each Host gets as long as it is in the correct subnet. NET 413 Lab 3 Assignment Page 6 of 7

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d. Go back to Table 2 in Lab 3 Answer Sheet and fill in the IP addresses for the 3 Hosts. 10. Now test 1-hop pings on each VLAN: a. Test ping from Host 2 to Host 3. b. Test ping from Host 1 to R1 Fa0/0. 11. VERIFY / TEST YOUR NETWORK: a. On S1: type show vlan brief and verify that i. Fa0/1 is on VLAN 20 ii. Fa0/2 is on VLAN 10 iii. Fa0/4, Fa0/5 is not listed on any VLAN b. On S1: type show interface trunk and verify that i. Fa0/4, Fa0/5 are active trunk ports c. On S2: type show vlan brief and verify that i. Fa0/1 is on VLAN 20 ii. Fa0/4, Fa0/5 are not listed on any VLAN d. On S2: type show interface trunk and verify that i. Fa0/4, Fa0/5 are active trunk ports e. On S3: type show vlan brief and verify that i. Fa0/1 is on VLAN 10 ii. Fa0/4, Fa0/5 are not listed on any VLAN f. On S3: type show interface trunk and verify that i. Fa0/4, Fa0/5 are active trunk ports g. tracert from Host 2 to Host 1 – verify that this goes 2 hops through S1 h. tracert from Host 3 to R1 Fa0/0 – verify that this goes 2 hops through S1 12. If all tests are successful, then follow the instructions and answer the questions in Lab 3 Answer Sheet Part 3. Submit your answers to D2L. NET 413 Lab 3 Assignment Page 7 of 7