Suppose The Image Below Is Your Company's Network Diagram Af
Suppose The Image Below Is Your Companys Network Diagram After A Merg
Suppose the image below is your company’s network diagram after a merger and you have recently added access controls to your network. The CSO would like to: · Change the internal network address to incorporate variable length subnet mask (VLSM) with EIGRP routing protocol. · Set up all of the accountants on a separate VLAN. · Create a VPN connection to allow accountants to access the accounting database from their home. Write a two to three (2-3) page paper in which you: 1. Re-create the diagram provided in the assignment summary using VLSM, through the use of graphical tools in Microsoft Visio or an open source alternative such as Dia. (The starting address is 172.16.0.0.) Note: The graphically depicted solution is not included in the required page length. 2. Specify the commands that you would use to set up the routers to use EIGRP. 3. Outline the requirements to set up a VLAN and VPN access for the accountants. 4. Specify the VLAN assignment, and incorporate a Spanning Tree protocol into your design to eliminate loops. Your assignment must follow these formatting requirements: · Be typed, double spaced, using Times New Roman font (size 12), with one-inch margins on all sides; citations and references must follow APA or school-specific format. Check with your professor for any additional instructions. · Include a cover page containing the title of the assignment, the student’s name, the professor’s name, the course title, and the date. The cover page and the reference page are not included in the required assignment page length. · Include charts or diagrams created in Visio or an equivalent such as Dia. The completed diagrams / charts must be imported into the Word document before the paper is submitted. The specific course learning outcomes associated with this assignment are: · Describe and implement Virtual Local Area Networks (VLANs) on a computing network. · Compare and contrast dynamic routing, distance vector routing, and link-state routing protocols. · Use technology and information resources to research issues in Internetworking. Write clearly and concisely about basic internetworking using proper writing mechanics and technical style conventions.
Paper For Above instruction
Introduction
In the wake of a corporate merger, networks often require redesigning to ensure optimal performance, security, and scalability. This paper documents the necessary steps to modify the existing network infrastructure of the combined organization based on the provided instructions. The activities include re-creating the network diagram with Variable Length Subnet Masking (VLSM), setting up EIGRP routing, configuring isolated VLANs for accountants, establishing VPN access, and integrating Spanning Tree Protocol (STP) for loop prevention. These steps are essential for a robust, scalable, and secure network environment capable of supporting ongoing business operations and remote access requirements.
Re-creating the Network Diagram with VLSM and EIGRP Routing
The starting point for network reconfiguration is the address space 172.16.0.0/16. To efficiently allocate IP addresses among various subnets, VLSM allows for flexible subnet sizing based on actual resource needs. Using network design tools such as Microsoft Visio or Dia, the network can be segmented into appropriate subnets.
For instance, suppose the network includes departments like administration, IT, sales, finance, and accounting. Given these, and assuming that the accounting department needs a dedicated subnet for better security, along with other departments, the network diagram can be subdivided accordingly.
An example VLSM allocation would be:
- Management and core infrastructure: 172.16.0.0/24
- Accounting VLAN: 172.16.10.0/24
- IT Department: 172.16.20.0/24
- Sales Department: 172.16.30.0/24
- Administration: 172.16.40.0/24
Further refinement can be made based on the number of hosts each department requires. For example, if the accounting department needs 50 hosts, a /26 subnet (subnet mask 255.255.255.192) provides 62 usable IP addresses (63 minus network and broadcast addresses).
Using these, a properly structured network diagram can be created that aligns with the VLSM allocations, clearly marking VLANs, routers, switches, and connections. This visual representation helps in understanding the logical segmentation and IP allocation, ensuring effective routing.
Configuring EIGRP Routing Protocols
Setting up EIGRP (Enhanced Interior Gateway Routing Protocol) on routers involves specific Cisco commands, assuming Cisco IOS devices.
Sample configuration commands include:
```plaintext
Router(config)# router eigrp 100
Router(config-router)# network 172.16.0.0 0.0.255.255
Router(config-router)# no auto-summary
```
- The `router eigrp 100` command enables EIGRP process ID 100.
- The `network` command specifies which interfaces participate in EIGRP. The wildcard mask `0.0.255.255` covers the 172.16.0.0/16 network.
- The `no auto-summary` command disables automatic summarization, promoting VLSM support, and ensures precise routing.
Additional commands include setting router IDs, enabling authentication if necessary, and adjusting timers for fine-tuning. Establishing EIGRP thereby facilitates fast, scalable, and loop-free routing within the internal network, especially important after re-addressing with VLSM.
VLAN and VPN Configuration Requirements
To isolate the accounting department, a dedicated VLAN needs to be configured on core switches:
- Assign VLAN ID 10 to accounting:
```plaintext
Switch(config)# vlan 10
Switch(config-vlan)# name Accounting
```
- Assign switch ports to VLAN 10 for accounting devices:
```plaintext
Switch(config)# interface FastEthernet0/1
Switch(config-if)# switchport mode access
Switch(config-if)# switchport access vlan 10
```
- Enable VLAN interface (SVI) on the router or Layer 3 switch for inter-VLAN routing:
```plaintext
Router(config)# interface vlan 10
Router(config-if)# ip address 172.16.10.1 255.255.255.192
```
For VPN connectivity:
- Deploy VPN appliances or configure router-based VPN endpoints using IPsec, which involves setting pre-shared keys, encryption methods, and remote peer configuration.
- Require remote users to install VPN client software or utilize clientless VPN portals.
- Extend internal network IP ranges to the remote VPN clients, using secure authentication mechanisms to prevent unauthorized access.
Utilizing VPN encryption and strong authentication ensures that accountants can securely access critical databases from remote locations, complying with organizational security policies.
Integrating Spanning Tree Protocol and VLAN Assignment
To prevent network loops caused by multiple redundant links, STP should be enabled on switches:
```plaintext
Switch(config)# spanning-tree vlan 10
```
Set the root bridge on primary switches to ensure optimal traffic flow:
```plaintext
Switch(config)# spanning-tree vlan 10 root primary
```
The VLAN assignment is as specified:
- VLAN 10 allocated to accountants.
- Other departments assigned to separate VLANs, such as VLAN 20 for IT, VLAN 30 for sales, etc.
STP ensures that the network maintains reliable connectivity without loops, automatically disabling redundant links until needed, and re-enabling them if active links fail.
Conclusion
In summary, after the merger, the network requires a structured approach to address reconfiguration, routing, segmentation, and remote access. Employing VLSM enables efficient IP space utilization aligned with organizational needs, while EIGRP provides robust dynamic routing. Segregating accountants into a dedicated VLAN with appropriate switch and router configurations enhances security and traffic management. Establishing VPN access allows remote workers safe connectivity to vital data repositories. Incorporation of STP prevents network loops, ensuring stability. Together, these actions cultivate a scalable, secure, and efficient network infrastructure conducive to the organization’s evolving operational environment.
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