Reference no: EM132610254

LANs and Routing

Objectives
• Design hierarchical IPv4 and IPv6 addressing schemes to meet addressing requirements.
• Configure RIPv2 with simple route redistribution for IPv4
• Configure static, default static, summary static routing and floating static routing for IPv4.
• Configure floating default static routes for conditional redundancy at the ISP.
• Configure switching networks for management, VLANs, 802.1q trunking, inter-VLAN routing.
• Verify the functionality and troubleshoot the network when necessary.

1.1 Part A: IPv4 Addressing Milestone
Each group as a team is required to submit their IPv4 subnetting and addressing scheme, i.e., Tables A1, B and C on Page 10 of this book, to your lab instructor via Email before the end of Week 5, i.e., 11:59pm Sunday Week 5. Feedback is expected to be given in Week 6 lab class.

1.2 Part B: Packet Tracer based Demonstration and Oral Assessment
During your scheduled lab session in Week 10, individual students will be required to implement, from scratch, the network that their group have designed on Packet Tracer, to demonstrate that their network meets all the requirements specified in this Case Study book. The network and its functionality will then be graded on site through testing and oral assessment over the Discussion Questions. Please refer to Section 7 on Page 9 of this Case Study book for more details.

Scenario
Industries is a large company that has business enterprises in a number of areas. Its main business concerns are Engineering, Telecommunication and Finance. anyIndustries ICT has embarked on a project of designing and redesigning the company's ICT infrastructure and has decided to commence work on the infrastructure for the D'entrecasteaux National Park region for now, which is one of its smaller sized sites and occupies the geographical area of the D'entrecasteaux National Park and outlying areas of the Camfield region.

The completed D'entrecasteaux National Park networks will be implemented in phases. The initial phase of the network redesign is to implement a portion of the design, i.e. Camfield, Broke Inlet, and Clark Island networks.

The network that the anyIndustries ICT is implementing is composed of various networks. A partial logical Topology Diagram has been provided (see Figure 1: Basic Network Topology). The task is to design, implement and document the networks at the three sites. At the end of the project, anyIndustries ICT would like to see a prototype of the network built, before it is fully implemented, to verify that it will meet anyIndustries ICT needs.

Fig. 1. Basic network topology

The Broke Inlet site is mainly for the anyindustries Development division. All user groups will each have employees located in two adjoining buildings, i.e., South Western Highway and Fishman Road. Due to the size and complexity of LANs, the company wants to create VLANs to control broadcasts, enhance security and logically organise user groups because they are essential for the company's operations.
The Camfield site has two exit links for access to other anyIndustries locations, the Internet and external services. Camfield connects to the Broke Inlet and Clark Island sites using Leased Line serial connections provided by anyISP.
The Clark Island site also houses one of many anyIndustries' private Backup sites, and intranet services, used by external and internal users from anyIndustries.
anyIndustries ICT has previously used RIP version 2 in the Clark Island site and wishes to continue using it for all three of its locations.
anyIndustries ICT also wants to use private IP addresses throughout the Network. Although private addresses will be used, the company appreciates efficiency and address conservation in their design. To minimise wasted address spaces, they have requested CIDR and hierarchical VLSM to be used whenever appropriate.

IPv6 has been considered and at this stage, and dual-stacking will be implemented everywhere to support both IPv4 and IPv6.

Requirements in Tasks
In order to help your group organise this Case Study, the scenario has been broken into three tasks and detailed requirements are listed for each task. A prototype of the network is expected to be implemented using Packet Tracer to demonstrate its functionality when all tasks are completed.
Task One: Addressing the Network

The ISP links:
The ISP has allocated one of the following public IPv4 address spaces for your group, which will need to be broken into two /30 address spaces for each of the two ISP links:

• Group A/1: 209.165.199.64/29
• Group B/2: 209.165.199.72/29
• Group C/3: 209.165.199.80/29
• Group D/4: 209.165.199.88/29
• Group E/5: 209.165.199.96/29
• Group F/6: 209.165.199.104/29

For IPv6, 2001:8000:ABCD::/124 is used to address the two ISP links.
The Internal Network:
As part of the network redesign, anyIndustries ICT has allocated one of the following private address spaces for your group and 2001:DB8:CA5E::/48 for addressing the internal network:

• Group A/1: 172.17.8.0/21
• Group B/2: 172.17.16.0/21
• Group C/3: 172.17.24.0/21
• Group D/4: 172.17.32.0/21
• Group E/5: 172.17.40.0/21
• Group F/6: 172.17.48.0/21

For the Broke Inlet switching network:
• 200 hosts for the Project group
• 25 hosts for the HR Group
• 5 hosts in the Security Systems
o Each user group will be in their own subnets (implemented using VLAN technologies, each with their own gateway implemented with ‘sub-interfaces').
o The number of hosts in each group has not included the gateway (sub)-interfaces.
The Clark Island site is used by anyIndustries as the Backup Site (anyBackup) for all anyIndustries businesses and also for the company's Intranet services, named anyNet and has:
• 95 servers for anyFinance,
• 40 servers for anyTelecommunication,
• 5 servers in the anyNet
o For the purpose of Lab Demonstration, loopback interfaces can be configured to simulate anyFinance and anyNet, which are not shown in the partial Topology Diagram.
anyIndustries ICT requires that:
• The use of hierarchical VLSM design to maximise the use of IP addresses and CIDR.
• All networking devices must have IPv4 addresses and the PC hosts' gateways will use the first available usable address in each subnet.
• Both ISP links will be using a subnet mask of /30 for IPv4 and a prefix of /125 for IPv6.
• The switching network sites will use EUI-64 for IPv6 addressing.
• The routers' interfaces for IPv6 will use static link-local addressing.
• The Management/Native VLAN for the switching network at the Broke Inlet site will have two extra hosts (one is shown in the partial Topology Diagram) for potential administration usage. PS. The Management/Native VLAN will also have the management interfaces of the South Western Highway and the Fishman Road switch. So, you will need to plan for a subnet of 8 IP addresses.
• The network administrator host (i.e., PC1) will have the last usable address on the Management/Native VLAN subnet.
At this stage, anyIndustries ICT agrees that it is enough to assign IPv4 addresses statically.
Milestone Submission: Tables A1, B and C
1) IPv4 Network subnetting Table A1, which shows possible subnets that meet the design requirements; Subnets that are not used are to be clearly identified in each table.
2) Detailed IPv4 addressing tables (Tables B and C) showing all networking devices' names and their interface details.
Discussion Questions: Consider how you do subnetting so as to meet each of the requirements.

Task Two: Switching Network at the West Site
Due to the size and complexity of LANs, the company wants to use VLAN technologies to control broadcasts, enhance security and logically organise user groups at the Broke Inlet site. 802.1Q trunk-based Inter-VLAN routing for both IPv4 and IPv6 will need to be implemented to advertise all VLAN networks at the Broke Inlet site.

Fig. 2. The switching networks at the Broke Inlet site.

The anyIndustries ICT has provided the following details for designing the switching networks:
• All user groups will each have employees located in two adjoining buildings, i.e. South Western Highway and Fishman Road switches. For the purpose of Lab Demonstration, allocate 2 ports to each user VLAN on each switch.
• Assign VLAN 137 as the Management/Native VLAN. The Management and Native VLAN also needs to accommodate one extra host on each switch for possible usage of the network administrator.
• Do not allow traffic of the default VLAN 1 and the Unused VLAN onto the trunks.

Discussion Questions:
Consider, in detail, how you implement and verify the following functions:
1) Creating VLANs and assigning ports.
2) SVI configuration and verification.
3) Inter-VLAN routing configuration and verification.

Task Three: Routing the Network

Routing the Internal Network

IPv4 Routing: The anyIndustries' ICT policy is that RIP routing will be used internally for all its IPv4 networks.
IPv6 Routing: All IPv6 routing will use static, default, summary and/or floating static routing.
Your design and implementation of static routing should be in a most efficient manner.
Routing to and from ISP
anyIndustries has subscribed two FastEthernet links to ISP, one acting as the primary link and the other one as the backup secondary link (as shown in Fig. 3). The secondary link will be taken only when the primary link fails. This should be automatic with no further manual adjustment.

In order for the internal networks on all sites to access the Internet via ISP, anyIndustries ICT has decided that IPv4 and IPv6 static/default routings are to be configured on the Camfield router and the ISP router as appropriate, and propagated to other routers within the routing domain.
When correctly implemented, all hosts within the anyIndustries network should be able to reach the loopback address on ISP, i.e., 11.11.11.11/32 for IPv4 and 2001:11:11:11::11/128 for IPv6, which are used to simulate the Internet, via the primary ISP link or the secondary ISP link when the primary one is unavailable, in both ways.
Note that, for the lab demonstration, routing to private addresses is sufficient and NAT is not required.

Discussion Questions:
Consider how you implement and verify the following functions:
1) RIPv2 routing and static routing for the internal networks (including the switching networks).
2) static routing and failover routing via the two ISP links for both IPv4 and IPv6 networks.

Attachment:- LANs and Routing.rar