6/18/2020 CCNA Deep Dive: IPv4 Addressing and Static Routing: Lab 1 | Discussions to build real CCNA skills https://blog.certskills.com/dd-l41/#1579723475258-ce22356d-bdee 1/3 PROTECTED: CCNA DEEP DIVE: IPV4 ADDRESSING AND STATIC ROUTING: LAB 1 Back to homepage CCNA Deep Dive #4: IPv4 Addressing and Static Routing Lab 1: Router IP Addresses and Connected Routes Download .pkt File for this Lab Lab 1 Introduction Lab 1 Part A: Investigate the Topology Lab 1 Part A: Investigate the Topology IP routers route IP packets. That one short sentence sums up the core function of routers. To be able to route packets, routers need IP routes – and the process to add routes to a router’s routing table begins with IP address configuration to router interfaces. Part A begins the lab by asking you to discover the interfaces used by the routers in this lab, and to note that so far the routers do not have any IP addresses configured. In this Lab Part, you will take these steps: A.1 Open the PT File Used for this Lab A.2 Discover the Up/Up Interfaces on Each Router A.3 Document and Confirm the Router Interfaces with CDP A.4 Confirm the Absence of IP Addresses Figure 1A-1: Lab 1 Topology A.1 Open the PT File Used for this Lab Open the .pkt file for this lab to get ready to perform the lab. 1. Download the .pkt file for this lab and note the file name for future reference: ____________ 2. Start the Packet Tracer app and log in as needed. 3. Once PT has finished starting, open this lab’s .pkt file. 4. Open the detail window for the two routers (R1 and R2) by clicking their icons. 5. Navigate to the CLI tab in each of the router’s device detail windows. A.2 Discover the Up/Up Interfaces on Each Router SUBSCRIB SEARCH search here CATEGORIES Select Category TAG CLOUD 100-105 200-105 200-125 ACL ARP Career CCEN CCNP CLI DevNet DHC Encapsulation Frame relay ICND2 IP Address IPv6 Lab Gear MAC Table NAT OSPFv3 Packet Tracer pa port security PPP RIPv2 RSTP serial SNMP SSH STP Study Tips subnet switching Telnet VLAN Your exam prep resource site, from the #1 CCENT/CCNA author. Search some IPV4 ROUTING IPV6 WIRELESS P ICES 200-301 VOL 1 PARTS ▾ PS ICES 200-301 V2 PARTS ▾ 4 ROUTING 4 ACLS AND NAT VERSION 6 TWORK 100-105 PARTS ▾ V4 SERVICES: ACLS ISCELLANEOUS NAL PREP 200-105 PARTS ▾ GENERAL ▾ HANDS-ON ▾ LYSIS Y ROUTES R QUESTIONS ▾ REFERENCE ▾ 6/18/2020 CCNA Deep Dive: IPv4 Addressing and Static Routing: Lab 1 | Discussions to build real CCNA skills https://blog.certskills.com/dd-l41/#1579723475258-ce22356d-bdee 2/3 Router interfaces use two related state values to tell us whether the interface currently works or not: line status and protocol status . Both values must be “up” for the router to make use of the interface. The PT file for this lab includes two routers, but the routers do not use all their interfaces for this lab. Investigate the interfaces that exist on each router and note the ones currently in an “up/up” state. The lab uses only those interfaces (which happen to be the interfaces as shown earlier in Figure 1A-1.) 1. Find the interfaces on Router R1 as follows from the router R1 CLI: 1. Use the show running-config EXEC command. 2. Use the show ip interface brief EXEC command. 3. Use the show interfaces EXEC command. This command lists many lines of output, so use the space bar to display the next page of output or the enter key to add one new line-at-a-time. 2. Record the interface ID of any interfaces that are in an up/up state in Table 1A-1. As usual, use your lab notebook to record any data suggested in the lab. Leave space in your lab notebook to expand the table later and ignore the other table columns (but leave space for them in your lab notebook.) 3. Repeat the previous steps on router R2 to complete the table. Router Interface ID Status Neighbor Name IP Address IP Mask R1 Up/Up R1 Up/Up R1 Up/Up R2 Up/Up R2 Up/Up R2 Up/Up Table 1A-1: Lab 1 Router Interfaces that are Up/Up A.3 Document and Confirm the Router Interfaces with CDP Next, connect the information you just learned from the CLI of each router to the lab diagram (both here in the lab and PT’s main window.) Then you can confirm that data using the Cisco Discovery Protocol (CDP). To do so: 1. Re-draw figure 1A-1 in your lab notebook so that you can list the interface IDs in the figure. To find which interfaces in the lab figure match the PT main window diagram: 1. In the main PT window, hover over any cable that connects to router R1. Port labels should appear in the user interface (but they may be difficult to read.) If nothing appears, check your PT preferences. 2. If the port labels appear but are challenging to read, Click-hold-drag the router icon to move it around the topology window; this action causes PT to re-display the port numbers. Move the router to a place that makes the port numbers visible. 3. Record the port in your re-drawn figure 1A-1. 2. Confirm the data you just gathered from PT by using CLI commands for the Cisco Discovery Protocol (CDP) feature. To do so, follow these steps from the R1 CLI: 1. Use the show cdp neighbors EXEC command and examine the headings. 2. The second column of output has a heading of “Local Intrfce,” short for “Local Interface.” This column lists the interfaces on the local device – R1 in this case. 3. The right-most column heading, labeled “Port ID,” lists the interface ID of the interface on the neighboring device. 4. Examine the output of the show cdp neighbors command again. Do the interface IDs listed in the “Local Intrfce” and “Port ID” columns match the figure and data you just discovered in lab? ____________________________________________ 3. If you did create a copy of Table 1A-1 at an earlier step, complete the “Neighbor Name” column based on what you just learned using the PT main window and using CDP. For example, R1’s G0/0 port connects to neighbor “SW1” per the CDP output. A.4 Confirm the Absence of IP Addresses As a final step to become familiar with the initial state in the lab, look for any signs of IP address configuration on the routers. Routers use an ip address interface subcommand to configure a router interface IP address so that you can look in the configuration for those commands. Additionally, several show commands list IP address information as well. 1. From the R1 CLI, use the show running-config command and search for any ip address interface subcommands. Do you see any? If so, on which interfaces? Do you see any commands that confirm an interface has no IP address? ____________________________________________________________ ____________________________________________________________ 2. From the R1 CLI, use the show running-config | include ip address command, which searches the output and returns lines with the text “ip address”. Do you see any IP address configuration in this output? If so, what commands? ____________________________________________________________ ____________________________________________________________ 6/18/2020 CCNA Deep Dive: IPv4 Addressing and Static Routing: Lab 1 | Discussions to build real CCNA skills https://blog.certskills.com/dd-l41/#1579723475258-ce22356d-bdee 3/3 3. Use these commands on R1 to discover any IP address and mask information for any interfaces: 1. Use the show ip interface brief EXEC command, which lists IP addresses but not masks. 2. Use the show interfaces EXEC command, which lists the IP address and mask on the third line of output if an IP address exists. However, if none is configured, the output simply omits the IP address details. 3. Use the show protocols EXEC command. Do you see any IP addresses and masks? Do you see any confirmation that interfaces do not have any IP addresses configured? ____________________________________________ 4. Repeat the previous three steps on router R2 and note any IP address configuration. (No IP addresses should be configured yet.) ____________________________________________________________ ____________________________________________________________ Lab 1 Part B: Configure IP Addresses Per Plan Lab 1 Part C: Examine the Routes Created by IP Address Configuration Lab 1 Bonus Social media Share this article © 2019 Copyright CertSkills, Inc. . All Rights reserved. Disclosure: If you click and spend money, we earn a small referral fee. 6/18/2020 CCNA Deep Dive: IPv4 Addressing and Static Routing: Lab 1 | Discussions to build real CCNA skills https://blog.certskills.com/dd-l41/#1579723619565-afd2d547-808b 1/3 PROTECTED: CCNA DEEP DIVE: IPV4 ADDRESSING AND STATIC ROUTING: LAB 1 Back to homepage CCNA Deep Dive #4: IPv4 Addressing and Static Routing Lab 1: Router IP Addresses and Connected Routes Download .pkt File for this Lab Lab 1 Introduction Lab 1 Part A: Investigate the Topology Lab 1 Part B: Configure IP Addresses Per Plan Lab 1 Part B: Con gure IP Addresses Per Plan The lab provides a list of IP addresses and masks to use for each interface of each router. Your job: configure the address/mask values on each interface. Then examine the interfaces to see the IP address and mask appear in different show commands. In this Lab Part, you will take these steps: B.1 Confirm the Absence of IP Routes B.2 Review the IP Address Plan for Lab B.3 Configure IP Addresses per Plan on Routers R1 and R2 B.4 Confirm the Presence of IP Addresses B.5 Update Your Command Reference in Your Lab Notebook B.1 Confirm the Absence of IP Routes At the end of Part A, you should have confirmed that the routers do not have any IP addresses configured. As a result, the router should also have no IPv4 routes. Take a brief moment to confirm the absence of routes. If your PT file already has addresses configured, contact the instructor. 1. Use the show ip route EXEC command, which lists all IPv4 routes. The output begins with a legend to explain codes, with a list of routes below. Do you see any routes? If so, what subnet IDs do the routes list? ____________________________________________________________ ____________________________________________________________ 2. Repeat the previous step on R2 to confirm the absence or presence of IP routes. ____________________________________________________________ ____________________________________________________________ B.2 Review the IP Address Plan for Lab Figure 1B-1 and Table 1B-1 detail the IP address plan for lab. If you do not yet fully understand IP addressing and subnetting, do not worry – this lab gives you steps that let you learn by configuring the router and discovering what it does. As a next step then, review the figure and the table. In particular: The figure shows the address/mask pairs with a prefix-style mask, e.g.,/24. This brief style of mask works well in figures, and you should see it in the output of many show commands. The table shows the same address/mask info, but with a dotted-decimal mask. This longer dotted decimal mask format happens to be the style of mask used in the IOS ip address address mask interface subcommand. SUBSCRIB SEARCH search here CATEGORIES Select Category TAG CLOUD 100-105 200-105 200-125 ACL ARP Career CCEN CCNP CLI DevNet DHC Encapsulation Frame relay ICND2 IP Address IPv6 Lab Gear MAC Table NAT OSPFv3 Packet Tracer pa port security PPP RIPv2 RSTP serial SNMP SSH STP Study Tips subnet switching Telnet VLAN Your exam prep resource site, from the #1 CCENT/CCNA author. Search some IPV4 ROUTING IPV6 WIRELESS P ICES 200-301 VOL 1 PARTS ▾ PS ICES 200-301 V2 PARTS ▾ 4 ROUTING 4 ACLS AND NAT VERSION 6 TWORK 100-105 PARTS ▾ V4 SERVICES: ACLS ISCELLANEOUS NAL PREP 200-105 PARTS ▾ GENERAL ▾ HANDS-ON ▾ LYSIS Y ROUTES R QUESTIONS ▾ REFERENCE ▾ 6/18/2020 CCNA Deep Dive: IPv4 Addressing and Static Routing: Lab 1 | Discussions to build real CCNA skills https://blog.certskills.com/dd-l41/#1579723619565-afd2d547-808b 2/3 Figure 1B-1: IP Address Plan w/ Prefix Masks Router Interface ID Neighbor Name IP Address IP Mask R1 G0/0 SW1 10.1.1.126 255.255.255.0 R1 G0/1 SW2 10.1.2.126 255.255.255.192 R1 G0/2/0 R2 10.1.12.1 255.255.255.0 R2 G0/0 SW3 10.1.3.190 255.255.255.0 R2 G0/1 SW4 10.1.4.158 255.255.255.224 R2 G0/1/0 R1 10.1.12.2 255.255.255.0 Table 1B-1: IP Address Plan w/ Dotted Decimal Masks Prefix DDN Prefix DDN /8 255.0.0.0 /20 255.255.240.0 /9 255.128.0.0 /21 255.255.248.0 /10 255.192.0.0 /22 255.255.252.0 /11 255.224.0.0 /23 255.255.254.0 /12 255.240.0.0 /24 255.255.255.0 /13 255.248.0.0 /25 255.255.255.128 /14 255.252.0.0 /26 255.255.255.192 /15 255.254.0.0 /27 255.255.255.224 /16 255.255.0.0 /28 255.255.255.240 /17 255.255.128.0 /29 255.255.255.248 /18 255.255.192.0 /30 255.255.255.252 /19 255.255.224.0 Table 1B-2: Prefix and DDN Masks – Equivalent Values B.3 Configure IP Addresses per Plan on Routers R1 and R2 The IOS ip address address mask interface subcommand defines the IPv4 address on the interface. For this task, systematically implement the address plan per Figure 1B-1 and Table 1B-1, as follows: 1. On Router R1 from the CLI window: 1. Enter global configuration mode ( configure terminal ). 2. Move to interface configuration mode for interface G0/0 ( interface g0/0 ). 3. Issue the ip address address mask interface subcommand with the address/mask per Table 1B-1, for instance, in this case: ip address 10.1.1.126 255.255.255.0 2. While still in configuration mode on router R1, configure the other interface IP addresses: 1. Move to interface configuration mode for the next interface ( interface interface-id ). 2. Issue the ip address address mask interface subcommand with the address/mask per Table 1B-1. 3. When finished, exit configuration mode (CTL-z, exit ) and save your configuration ( copy running-config startup-config ). 4. Configure the IP addresses for router R2 using the same steps but use the IP addresses for R2, as shown in Table 1B-1. 6/18/2020 CCNA Deep Dive: IPv4 Addressing and Static Routing: Lab 1 | Discussions to build real CCNA skills https://blog.certskills.com/dd-l41/#1579723619565-afd2d547-808b 3/3 B.4 Confirm the Presence of IP Addresses As a final step to become familiar with the initial state in the lab, look for any signs of IP address configuration on the routers. Routers use an ip address interface subcommand to configure a router interface IP address so that you can look in the configuration for those commands. Additionally, several show commands list IP address information as well. 1. From the R1 CLI, use the show running-config command and search for the new ip address interface subcommands. Confirm that you configured the commands correctly per the planning information. 2. Just for another view of the configuration, use the show running-config | include ip address command, which should list your new ip address configuration commands. 3. Use the show ip interface brief EXEC command. Do you see your new IP addresses listed? Do you see the masks as well? Note that each up/up interface should have an IP address configured at this point. ____________________________________________________________ ____________________________________________________________ 4. Use the show protocols EXEC command. Do you see your new IP addresses listed? Do you see the masks as well? Note that each up/up interface should have an IP address configured at this point. ____________________________________________________________ ____________________________________________________________ 5. Find the IP address and mask configuration for each up/up interface in the output of the show interfaces EXEC command, and again confirm those values versus the planning information. 6. Repeat the previous steps on router R2 to confirm you configured all the required IP addresses. B.5 Update Your Command Reference in Your Lab Notebook You learn a wide variety of CLI commands when learning for CCNA – in fact, this lab has already introduced several different commands. Building your own command reference can be a useful learning task to help you remember all the commands. Follow these steps for these latest commands: 1. If you have not yet begun your own command reference: 1. Choose a space in your lab notebook. Your lab notebook can be paper, a text editor, a note-taking app, whatever works for you. 2. Choose an organization – and do not worry that you might want to update the organization later. For instance, you could start a new section of your command reference for today’s class. Or have a section for IP addressing, one for static IP routes, one for OSPF, and so on, independent of the courses. 3. Consider separating the EXEC commands from the configuration commands. Add the commands covered in this lab to your lab notebook command reference. Just write down the command, and note what it configures (config commands), or what key facts it lists (EXEC commands.) Lab 1 Part C: Examine the Routes Created by IP Address Configuration Lab 1 Bonus Social media Share this article © 2019 Copyright CertSkills, Inc. . All Rights reserved. Disclosure: If you click and spend money, we earn a small referral fee. 6/18/2020 CCNA Deep Dive: IPv4 Addressing and Static Routing: Lab 1 | Discussions to build real CCNA skills https://blog.certskills.com/dd-l41/#1583165478893-dc5da6de-55cf 1/3 PROTECTED: CCNA DEEP DIVE: IPV4 ADDRESSING AND STATIC ROUTING: LAB 1 Back to homepage CCNA Deep Dive #4: IPv4 Addressing and Static Routing Lab 1: Router IP Addresses and Connected Routes Download .pkt File for this Lab Lab 1 Introduction Lab 1 Part A: Investigate the Topology Lab 1 Part B: Configure IP Addresses Per Plan Lab 1 Part C: Examine the Routes Created by IP Address Configuration Lab 1 Part C: Examine the Routes Created by IP Address Con guration Routers add different routes to their IP routing tables as a result of adding IP address configuration. This part helps you examine the new routes and understand the local and connected routes on each router. In this Lab Part, you will take these steps: C.1 Find Connected Routes on Router R1 C.2 Find Connected Routes on Router R2 C.3 Make a Connected Route Disappear Figure 1C-1: Lab 1 Topology with Subnet IDs Shown Router Interface ID Neighbor Name IP Address IP Mask Subnet ID R1 G0/0 SW1 10.1.1.126 255.255.255.0 R1 G0/1 SW2 10.1.2.126 255.255.255.192 R1 G0/2/0 R2 10.1.12.1 255.255.255.0 R2 G0/0 SW3 10.1.3.190 255.255.255.0 R2 G0/1 SW4 10.1.4.158 255.255.255.224 R2 G0/1/0 R1 10.1.12.2 255.255.255.0 SUBSCRIB SEARCH search here CATEGORIES Select Category TAG CLOUD 100-105 200-105 200-125 ACL ARP Career CCEN CCNP CLI DevNet DHC Encapsulation Frame relay ICND2 IP Address IPv6 Lab Gear MAC Table NAT OSPFv3 Packet Tracer pa port security PPP RIPv2 RSTP serial SNMP SSH STP Study Tips subnet switching Telnet VLAN Your exam prep resource site, from the #1 CCENT/CCNA author. Search some IPV4 ROUTING IPV6 WIRELESS P ICES 200-301 VOL 1 PARTS ▾ PS ICES 200-301 V2 PARTS ▾ 4 ROUTING 4 ACLS AND NAT VERSION 6 TWORK 100-105 PARTS ▾ V4 SERVICES: ACLS ISCELLANEOUS NAL PREP 200-105 PARTS ▾ GENERAL ▾ HANDS-ON ▾ LYSIS Y ROUTES R QUESTIONS ▾ REFERENCE ▾ 6/18/2020 CCNA Deep Dive: IPv4 Addressing and Static Routing: Lab 1 | Discussions to build real CCNA skills https://blog.certskills.com/dd-l41/#1583165478893-dc5da6de-55cf 2/3 Table 1C-1: IP Address Plan w/ Room to Record Connected Subnet ID C.1 Find Connected Routes on Router R1 A router adds a connected route to its routing table under these conditions: The interface has an ip address command configured. The interface is in an up/up state. Each router in lab should now have several interfaces that meet those criteria. Next, you should find those connected routes using these steps from the router R1 CLI. 1. Use the show ip route command to display the router’s IP routing table. First, look closely at the legend of codes in the first 10 lines or so of output. What do you see for codes L, C, and O? L: __________________________________________________________ C: __________________________________________________________ O: __________________________________________________________ 2. Look again at the show ip route command output, now looking for the routes at the bottom of the output. How many routes do you see with code L, C, and O? L: __________________________________________________________ C: __________________________________________________________ O: __________________________________________________________ 3. Focus on the connected routes, either using the show ip route command or the more specific show ip route connected command. Each route lists the subnet ID and mask (in prefix format) just to the right of the code. Each connected route also lists the related interface. Record the subnet ID and mask (e.g., 10.1.1.0/24) in a version of Table 1C-1 (above) in your lab notebook. 4. Focus on the local routes using the show ip route command. Each local route line shows a /32 mask, signifying a route for that individual IP address. Compare the local routes to the interface IP addresses you just configured. Do they match, or are they different? ____________________________________________________________ ____________________________________________________________ C.2 Find Connected Routes on Router R2 Repeat the previous steps on router R2 as well to find all the subnets with connected routes and to find all the local routes. In short, use show ip route and discover the connected and local routes. The connected routes list the subnet ID as calculated by the router, while the local routes list the specific IP addresses you configured in Part B. C.3 Make a Connected Route Disappear As noted earlier in the lab, a router adds a connected route to its routing table under these conditions: The interface has an ip address command configured. The interface is in an up/up state. If an interface fails, the router removes the related connected route (and the local route.) In this step, you cause router R1’s G0/2/0 interface to fail and see the results. 1. Arrange the PT windows for easy switching between the R1 and R2 CLI. 2. Use the show ip route command on both routers to confirm that both have a connected route for 10.1.12.0/24, the subnet on the link between the two routers. 3. Use the show ip interface brief command on both routers. What are the line status and protocol status of the following interfaces? R1 G0/2/0: __________________________________________________________ R2 G0/1/0: __________________________________________________________ 4. On router R1, administratively disable the interface that connects to router R2 as follows: 1. Enter global configuration mode ( configure terminal ). 2. Move to interface configuration mode for interface G0/2/0 ( interface g0/2/0 ). 3. Issue the shutdown interface subcommand. 5. Watch for messages at both routers’ CLI windows about the link failing. The shutdown command on R1 brings down the interface on purpose. The router at the other end of the fiber cable, R2, will see its matching G0/1/0 interface fail. 6. Use the show ip interface brief command again on both routers. What are the line status and protocol status of the following interfaces? R1 G0/2/0: __________________________________________________________ R2 G0/1/0: __________________________________________________________ 7. Use the show ip route command again on both routers. Do the routers still have connected routes for subnet 10.1.12.0/24? What about local routes for the interfaces that connect to each other? R1 G0/2/0: __________________________________________________________ R2 G0/1/0: __________________________________________________________ 8. On router R1, reverse the process by administratively enabling the interface using the odd no shutdown command as follows: 1. Enter global configuration mode ( configure terminal ). 2. Move to interface configuration mode for interface G0/2/0 ( interface g0/2/0 ). 6/18/2020 CCNA Deep Dive: IPv4 Addressing and Static Routing: Lab 1 | Discussions to build real CCNA skills https://blog.certskills.com/dd-l41/#1583165478893-dc5da6de-55cf 3/3 3. Issue the no shutdown interface subcommand. (The command begins with no , which is Cisco’s convention for many commands that do the opposite of the same command without the no to begin the command.) 9. Once more, use the show ip route and show ip interface brief commands. Do the related connected and local routes re-appear? Do the interfaces again show an up/up state? Lab 1 Bonus Social media Share this article © 2019 Copyright CertSkills, Inc. . All Rights reserved. Disclosure: If you click and spend money, we earn a small referral fee. 6/18/2020 CCNA Deep Dive: IPv4 Addressing and Static Routing: Lab 1 | Discussions to build real CCNA skills https://blog.certskills.com/dd-l41/#1579723872782-d060662a-008d 1/3 PROTECTED: CCNA DEEP DIVE: IPV4 ADDRESSING AND STATIC ROUTING: LAB 1 Back to homepage CCNA Deep Dive #4: IPv4 Addressing and Static Routing Lab 1: Router IP Addresses and Connected Routes Download .pkt File for this Lab Lab 1 Introduction Lab 1 Part A: Investigate the Topology Lab 1 Part B: Configure IP Addresses Per Plan Lab 1 Part C: Examine the Routes Created by IP Address Configuration Lab 1 Bonus Lab 1 Bonus The Bonus section provides a little additional learning for those moving quickly through the lab. If you do not reach this section, do not be concerned – it is more important to learn the earlier parts of the lab thoroughly, and you can come back to this bonus section after class if interested. But for those who move more quickly, you can keep making more progress while you still have time in lab. The bonus for this lab offers multiple additional activities. You can choose to do any of the activities in any order. Bonus.1 Create Subnets on Loopback Interfaces Bonus.2 Calculate Subnet Facts about the Connected Subnets Figure 1D-1: Lab 1 Topology Bonus.1 Create Subnets on Loopback Interfaces Routers support a type of virtual interface called a loopback interface. You can create a loopback interface with the global configuration command interface loopback x , where x is some integer value. Then you can treat the interface like other interfaces in these ways: Add a description with the description text interface subcommand. Add an IP address/mask combination with the ip address address mask interface subcommand. SUBSCRIB SEARCH search here CATEGORIES Select Category TAG CLOUD 100-105 200-105 200-125 ACL ARP Career CCEN CCNP CLI DevNet DHC Encapsulation Frame relay ICND2 IP Address IPv6 Lab Gear MAC Table NAT OSPFv3 Packet Tracer pa port security PPP RIPv2 RSTP serial SNMP SSH STP Study Tips subnet switching Telnet VLAN Your exam prep resource site, from the #1 CCENT/CCNA author. Search some IPV4 ROUTING IPV6 WIRELESS P ICES 200-301 VOL 1 PARTS ▾ PS ICES 200-301 V2 PARTS ▾ 4 ROUTING 4 ACLS AND NAT VERSION 6 TWORK 100-105 PARTS ▾ V4 SERVICES: ACLS ISCELLANEOUS NAL PREP 200-105 PARTS ▾ GENERAL ▾ HANDS-ON ▾ LYSIS Y ROUTES R QUESTIONS ▾ REFERENCE ▾ 6/18/2020 CCNA Deep Dive: IPv4 Addressing and Static Routing: Lab 1 | Discussions to build real CCNA skills https://blog.certskills.com/dd-l41/#1579723872782-d060662a-008d 2/3 Administratively enable the interface with the no shutdown interface subcommand. Administratively disable the interface with the shutdown interface subcommand. Loopback interfaces remain up if they have been enabled, and the router is up, no matter the status of any physical interface. You can use loopback interfaces as a learning tool for configuring IP addresses and seeing the results. Loopbacks do have other more meaningful uses, for instance, OSPF can use loopback interface IP address to build its OSPF Router ID, as you will see in the content about the OSPF routing protocol. For this bonus step, use router R1 to do the following: 1. Create loopback interface 1 and enable it. 2. Assign it IP address/mask combination 192.168.51.101 255.255.255.240. 3. Examine the connected route off the loopback interface. What is the subnet ID of the connected route? __________________________________________________________ 4. Create loopback interface 2 and enable it. 5. Assign it IP address/mask combination 172.16.100.101 255.255.240.0. 6. Examine the connected route off the loopback interface. What is the subnet ID of the connected route? __________________________________________________________ 7. Shutdown all the physical ports on router R1 but do not shutdown the loopback interfaces. Use show ip interface brief to confirm you disabled all non-loopback interfaces. Do the loopback interfaces remain in an up/up state? __________________________________________________________ 8. Re-enable the physical ports on router R1. Bonus.2 Calculate Subnet Facts about the Connected Subnets To be ready for the CCNA exam, you should be able to see a router IP address and mask and predict the connected route a router adds to its routing table. You should also be ready to calculate other facts. This course does not teach you how, but for this class, you can use any subnetting calculator to find those facts. This next task asks you to do just that. 1. Use an internet search to find any subnetting calculator that looks interesting to you. Or you can choose any of these: https://www.subnetonline.com/pages/subnet-calculators/ip-subnet-calculator.php http://jodies.de/ipcalc http://www.subnet-calculator.com 2. The calculators let you type the IP address and mask info into the calculator, with the output showing: 1. The subnet ID 2. The subnet broadcast address 3. The range of usable addresses 3. Use a calculator to calculate the subnet ID and subnet broadcast address for each address you configured in lab: Router Interface ID IP Address IP Mask Subnet ID Subnet Broadcast R1 G0/0 10.1.1.126 255.255.255.0 R1 G0/1 10.1.2.126 255.255.255.192 R1 G0/2/0 10.1.12.1 255.255.255.0 R2 G0/0 10.1.3.190 255.255.255.0 R2 G0/1 10.1.4.158 255.255.255.224 R2 G0/1/0 10.1.12.2 255.255.255.0 R1 Loop1 R1 Loop2 Table 1Bonus-1: Place to Record Subnet ID and Subnet Broadcast Addresses Social media Share this article © 2019 Copyright CertSkills, Inc. . All Rights reserved. Disclosure: If you click and spend money, we earn a small referral fee. 6/18/2020 CCNA Deep Dive: IPv4 Addressing and Static Routing: Lab 1 | Discussions to build real CCNA skills https://blog.certskills.com/dd-l41/#1579723872782-d060662a-008d 3/3