Case StudyAccess Control Lists (ACLs) Cisco Networking Academy Program CCNA 3: Switching Basics and Intermediate Routing v3.0 Overview and Objectives The following case study illustrates the process and documentation required for a network design. This case study presents a scenario in which the XYZ Research Company has hired a network consultant group to design their network. To help you organize this project, the scenario is broken into eight phases, with a list of requirements for each phase. A worksheet is to be completed for each part. You should create a formal report, similar to one you would to the company, after you have completed the tasks. This case study requires the following accomplishments: ■ Use the resources provided (diagram and narrative) to set up the physical network. Set up an IP subnetting scheme using Variable Length Subnet Masking (VLSM) Configure the routers as required Set up and configure the switches and VLANs as required Verify and troubleshoot all connections Provide detailed documentation in the appropriate format Provide a written final report. ■ ■ ■ ■ ■ ■ 1-2 CCNA 3: Switching Basics and Intermediate Routing v3.0 Copyright 2003, Cisco Systems, Inc. The company is implementing a wired network that should support 100% growth over the next 5 to 10 years. Case Study: Access Control Lists (ACLs) 1-3 . one building is for the Administration Group. to verify that it will meet the company’s needs. and fully document the XYZ Research Company network.Scenario The XYZ Research Company is a small company that develops high-speed wireless products. In addition to a formal report. The XYZ Research Company also has a Sales office located in Melbourne. Your task is to design. A logical diagram of the network is provided. The main office occupies two buildings in Sydney. Cisco Systems. Inc. The Research Group and the Sales and Marketing Group will each have employees on all three floors of the main building. Copyright 2003. the XYZ Research Company would like to see a prototype of the network before it is fully implemented. and the other building is for the Sales and Marketing Group and the larger Research and Development Group. implement. 0 Copyright 2003.Phase 1: Requirements Sample logical diagram 1-4 CCNA 3: Switching Basics and Intermediate Routing v3. Cisco Systems. . Inc. 0. In this case.100. Cisco Systems. logical diagram of the required network.Requirements The preceding figure depicts the XYZ Research Company’s partially completed. Case Study: Access Control Lists (ACLs) 1-5 . the company allows configuration of loopback networks as alternatives. regardless of company growth Use subnet 200.0 for internal addressing Use VLSM for IP addressing Expect 100% growth of current IP requirements when determining the size of subnets All networking devices must have IP addresses ■ ■ ■ ■ ■ Worksheet 1.0/30 for connection to the Internet router Use public class C network 223. Copyright 2003. The company expects the use of VLSM design to maximize the use of IP addresses.0. A table is produced showing all possible subnets that meet the company’s requirements using a VLSM design. Produce a logical diagram that includes: ■ ■ ■ ■ ■ ■ Router and switch names Router interface details Network addresses The number of hosts per network Clearly indicate DCE serial interfaces Link Speeds 2. XYZ Research Company Requirements ■ ■ ■ ■ ■ 18 employees in the Research and Development group Nine employees in the Sales and Marketing group Seven employees in the Administration group Five employees in the remote sales office Lifetime maximum of five servers on a separate subnet. In some instances. the equipment it provides does not have the required LAN interfaces. Inc. The company has also provided networking equipment for development and demonstration.200. Subnets that will not be used are to be clearly identified in the table. These tables assist with design and development activities and are used when configuring switches and routers.0 Copyright 2003. A separate table should be created for each router and switch at each location.The following is a sample table layout for recording the VLSM design. Location: ____________________ Router Name: ____________________ Interface or /Sub interface type/number Descriptio n and Purpose DCE/DTE (if applicable) Speed or Clock Rate Network Name Network Number Interface IP Address Subnet Mask 1-6 CCNA 3: Switching Basics and Intermediate Routing v3. Number of Host Addresses Required Network Address Subnet Mask Max Number of Hosts Possible In Use (Yes/No) Network Name 3.) Following is a sample layout for routers. Inc. Cisco Systems. For each location. (NOTE: Some fields in the switch table will be completed in Scenario (part 4). an additional set of tables is required. . including the Internet. Inc. Location: ____________________ Switch Name: ____________________ Switch IP address: ____________________ Interface or /Sub interface type/port/number Description and Purpose Speed Duplex Network Name Network Number Subnet Mask VLAN Switchport Type Encapsulation (if needed) Location: ____________________ Copyright 2003.Location: ____________________ Router Name: ____________________ Interface or /Sub interface type/number Description and Purpose DCE/DTE (if applicable) Speed or Clock Rate Network Name Network Number Interface IP Address Subnet Mask Location: ____________________ Router Name: ____________________ Interface or /Sub interface type/number Description and Purpose DCE/DTE (if applicable) Speed or Clock Rate Network Name Network Number Interface IP Address Subnet Mask Following is the sample layout for the switch tables. Cisco Systems. Case Study: Access Control Lists (ACLs) 1-7 . 1-8 CCNA 3: Switching Basics and Intermediate Routing v3.0 Copyright 2003. A DHCP server assigns PC workstation addresses. Inc. To complete the IP design. Cisco Systems. assign and tabulate PC/workstation and server addresses for each LAN in each location. .Switch Name: ____________________ Switch IP address: ____________________ Interface or /Sub interface type/port/number Description and Purpose Speed Duplex Network Name Network Number Subnet Mask VLAN Switchport Type Encapsulation (if needed) Location: ____________________ Switch Name: ____________________ Switch IP address: ____________________ Interface or /Sub interface type/port/number Description and Purpose Speed Duplex Network Name Network Number Subnet Mask VLAN Switchport Type Encapsulation (if needed) 4. Server addresses are assigned statically. Case Study: Access Control Lists (ACLs) 1-9 . Inc. Before you begin the next task. Instructors Signature: ______________________Date:_______________ Copyright 2003.For the demonstration. Cisco Systems. you must have your logical diagram and tables approved by the company. the company agrees that it is enough to statically assign all PC workstation and server addresses. Following is a table to collect documentation to deliver to the XYX Company: LAN name T h e t a b l e s PC or Server Name IP Address Subnet Mask Gateway Services Provided The tables and supporting text are part of the documentation you will delivere to the XYZ Research Company. or a numeric value) Property 2 Property 3 Property 4 Total Group’s Recommendation for Routing Protocol: ______________________ Instructor’s Signature:_________________________Date:_______________ 1-10 CCNA 3: Switching Basics and Intermediate Routing v3. Worksheet The possible routing protocol alternatives and properties are identified in a brainstorming session.. Inc. A recommendation is made and the decision matrix is presented to the company. . Each property is assigned a positive. or negative value for each of the routing protocols. 0 to 4. Alternatively. . Routing Protocol Property 1 (+. for example. neutral. Cisco Systems. neutral.Phase 2: Routing Protocols The company wants a recommendation for a routing protocol for the network. a numerical value can be used.0 Copyright 2003. Update the IP address tables produced previously to include the loopback addresses. The location tables. 3. Case Study: Access Control Lists (ACLs) 1-11 . records the major points of the discussion. The group discusses these issues. documents them. Will a DR be elected on the serial connections between buildings and the remote branch office? ________ Why? ______________________ Update the diagram with OSPF information. Inc. Make a decision about which router and router interface will be the DR. Instructors Signature: _______________________Date:_______________ Copyright 2003. Explain your reasons for choosing router _______________ as DR in the administration building. so a DR must be elected Determine whether to use the router ID or interface priority to determine the DR in the administration building ■ Worksheet 1. and diagram are modified to include this information and are presented to the company. router.Phase 3: OSPF The company has decided to use OSPF as the routing protocol. XYZ Research Company Requirements ■ ■ ■ ■ ■ OSPF process ID of 50 All routers in a single area: area 0 Loopback address assigned to each router Loopback address used as the OSPF router ID There is one multi-access network in the administration building. Explain your reasons for choosing the router ID or interface priority to determine DR. IP address table. 2. and makes recommendations. Cisco Systems. but only one is available at this time. Switch Details Switch Name Model # of Ports Location IP Address Gateway Management VLAN VTP Mode VTP Domain STP Root 1-12 CCNA 3: Switching Basics and Intermediate Routing v3.0 Copyright 2003. The company has provided the following information: XYZ Research Company Requirements ■ ■ ■ ■ ■ ■ There are 18 Research and Development employees There are nine Sales and Marketing employees Eight Research personnel and two Sales personnel are on Floor 3 Six Research personnel and four Sales personnel are on Floor 2 Four Research personnel and three Sales personnel are on Floor 1 Floor 1 also has the Server LAN. Inc.Phase 4: VLANs Now the company wants information about VLANs. Unassigned ports are to remain in the default VLAN. . Five server machines are planned. The following table is an example of the documentation required by the company. shared among the different subnets Spanning tree root is to be placed in an optimal position ■ ■ ■ ■ ■ ■ Worksheet 1. There are separate rooms on each floor for the workgroups There is sufficient space in each room to accommodate growth The 100% predicted growth will occur uniformly per floor Switches in the main building are connected in a loop such that if one switch fails. Tables documenting Switch VLAN port assignments are produced for the available demonstration equipment. Cisco Systems. an alternative path is used There is one switch per floor. which are required in the main building. 2. Case Study: Access Control Lists (ACLs) 1-13 . Instructors Signature: ______________________Date:_______________ Copyright 2003. located in the worksheets of Scenario (part 2). Inc. Write one paragraph justifying your choice. Cisco Systems.VLAN Port Assignments Update the switch tables. and the inter-connect to the router in the main building. to include the VLAN and port information for each server. you must justify your decision about the STP root bridge. the interconnect between switches. Before submitting the documentation. workstation. No. No. Floor 3 IDF Equipment Type Model No. recommended equipment including patch panels. No. include the following in the documentation. . Inc. 1-14 CCNA 3: Switching Basics and Intermediate Routing v3. Main Building. For each floor. Floor 1 IDF/MDF/POP Equipment Type Model No.0 Copyright 2003./Type Ports Description/Function Cost Main Building. Qty. and labeling rules.Phase 5: Physical Layer Design The company needs a proposal that includes the growth projections for the physical layer design./Type Ports Description/Function Cost Following is a diagram from the company’s old site to help with the physical layer design. Floor 2 IDF Equipment Type Model No. Qty. The document should include the number of cable runs. Qty./Type Ports Description/Function Cost Main Building. Cisco Systems. The length of cable needed between consecutive floors is 15 meters. The diagram should include the following: ■ ■ The length and number of cable runs The labeling convention for each of the outlets and patch panel. The horizontal cable runs on each floor will be no more than 30 meters.and VCC1:Floor1XFloor2Port1. Instructors Signature:_________________________Date:_______________ Copyright 2003.The company requires a similar diagram for the main building. Case Study: Access Control Lists (ACLs) 1-15 . The main building has three floors and will use CAT 5 throughout for the LANs. Cisco Systems. Inc. The documentation should include a description of how cross connects for all trunks will be patched for the required logical topology. HCC1:Floor1Room1Port1 . Use any standards that apply in the region. Generic room names and port names. are acceptable. List the pinout (straight or crossover) cable types. such as IDFFloor 1. Floor1Room1Port1. The company specifies the following network testing and is receptive to suggestions or recommendations about other testing. From Host To Host Trunk Up/Down Route Pass/Fail 1-16 CCNA 3: Switching Basics and Intermediate Routing v3. All configurations. Demonstrate routing between main building VLANs. Inc. as well as future network improvements.0 Copyright 2003. and VLAN databases are to be recorded as part of the documentation. From VLAN/SW To VLAN/SW Protocol Hosts Pass/Fail 2. The company requires that all devices be configured. From Host To Host Pass/Fail 3. . routing tables.Phase 6: Test Network The company requires a demonstration of the main building network’s functionality and asks that a logically equivalent network be wired up with the equipment provided. The company requires an http server machine to be set up in the Server VLAN. Demonstrate the behavior of the inter-network when a single trunk link fails. and at least a single client host on each of the other VLANs. Demonstrate access of all hosts to each other and HTTP service on the server machine. Testing and Verifying Strategy 1. Cisco Systems. Cisco Systems. Inc. Case Study: Access Control Lists (ACLs) 1-17 . Recommendations for future network improvements. Other demonstrations/tests (optional).4. Recommendation 1: Recommendation 2: Instructors Signature:_________________________Date:_______________ Copyright 2003. Record all configurations. . routing tables. Cisco Systems. a single OSPF area is acceptable. Inc. Configure all devices and access the Internet Server address from all networks shown. Test summary results: From Host To Host Path Tested Route Taken Pass/Fail Instructors Signature:_________________________Date:_______________ 1-18 CCNA 3: Switching Basics and Intermediate Routing v3. and outputs from connectivity testing and store them on an FTP server and a floppy disk. The company has selected the OSPF routing protocol with process ID of 50. Because the network is quite small.0 Copyright 2003.Phase 7: Final Demonstration The company requests a demonstration of the complete company inter-network. Phase 8: Presentation Your final task in this case study is to deliver a 10-minute presentation of the main features of the design decisions and your recommendations. Also provide a formal written report that contains all the design documents as well as all the supporting worksheets (see Case Study Deliverables section). Case Study: Access Control Lists (ACLs) 1-19 . Inc. The document should be complete enough to allow a third party to install and configure the network without any additional Instructors Signature:_________________________Date:_______________ Copyright 2003. Cisco Systems. you must provide a final report to your instructor. Cisco Systems. or a paint program can be used for the network diagrams. We highly recommend that all tables be completed using a spreadsheet program such as Microsoft Excel. The following items must be included in the final report: ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Outline Summary of the company and network requirements Discussion of the implementation of IP address and VLSM Discussion of the implementation of routing Discussion of the implementation of VLANs. the network has been successfully designed. STP.0 Copyright 2003. . Cisco Network Designer. Inc.CCNA 3 Case Study Deliverables After the case study problem is solved. This report should include thorough and well-organized documentation of the process. and the prototype implemented and tested. Visio. and switches Discussion of the physical layer design and equipment Discussion of testing and verification strategies Output of testing and verification commands from routers Output of testing and verification commands for switches Recommendations for future network upgrades Logical diagram Physical diagram IP addressing table Router interface table Switch table PC addressing table Routing protocol matrix Equipment table Router configurations (printed and floppy) Switch configurations (printed and floppy) Testing results (printed and floppy) 1-20 CCNA 3: Switching Basics and Intermediate Routing v3.