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Include the following: An IPv4 table that includes the Classless Inter-Domain Routing (CIDR) notation, subnets, and number of hosts used at each site/subnet. An IPv6 scheme to integrate the two sites. Selected IP routing protocol(s) and your rationale for either maintaining or changing West Consulting's current protocol. Summary of how your routing protocol recommendations address network convergence and maximize performance.

Paper For Above instruction

Designing an IP Addressing and Routing Strategy for West Consulting

Effective network design for organizations like West Consulting requires a carefully planned IP addressing scheme and routing protocol selection to ensure scalable, efficient, and reliable communication between sites. This paper addresses the construction of an IPv4 subnet table utilizing CIDR notation, proposes an integrated IPv6 scheme for dual-stack operation, and evaluates routing protocols with their impact on network convergence and performance.

IPv4 Addressing Scheme with CIDR Notation and Subnetting

The organization operates across multiple sites with varying device counts. For efficient IP management, CIDR notation allows flexible subnetting, accommodating current and future growth while minimizing wasted addresses. For example, assuming the organization’s headquarters network is assigned the private IPv4 space 192.168.0.0/16, we can create smaller subnets for each site based on host requirements.

The CIDR blocks are selected based on the current number of hosts and room for future expansion. Subnets are summarized at the network boundary to optimize routing protocols' efficiency.

IPv6 Scheme for Site Integration

Given the growth and the necessity for future-proofing, deploying IPv6 alongside IPv4 (dual-stack architecture) ensures seamless communication between the sites. The IPv6 space allocated for West Consulting could be 2001:0db8::/48, a common documentation prefix. The subnets are assigned as follows:

• 2001:0db8:0001::/64 for the headquarters
• 2001:0db8:0002::/64 for Branch Office 1
• 2001:0db8:0003::/64 for Branch Office 2
• 2001:0db8:0004::/64 for Remote Site

This structured approach simplifies address assignments and supports the growth of connected devices, while also enabling IPv6-specific features such as auto-configuration and enhanced security.

Routing Protocol Selection and Rationale

For the network, OSPF (Open Shortest Path First) is the preferred interior gateway protocol. OSPF’s advantages, including fast convergence, scalability, and support for hierarchical design via areas, make it suitable for multi-site environments like West Consulting. OSPF also supports CIDR, which aligns well with our subnetting strategy.

In case of the existing protocol is EIGRP (Enhanced Interior Gateway Routing Protocol), maintaining it could be considered if it’s already in use; however, migrating to OSPF offers better standardization and interoperability, especially in mixed-vendor environments, and supports IPv6 natively. OSPFv3 further enhances IPv6 support, aligning with the dual-stack deployment.

Addressing Network Convergence and Performance

Implementing OSPF with area segmentation reduces routing table sizes and localizes convergence, leading to faster network rebuilds after topology changes. OSPF’s rapid convergence minimizes downtime and network instability, critical for business continuity.

Furthermore, proper subnetting reduces unnecessary routing updates across the entire network, optimizing bandwidth usage. Using route summarization at area boundaries decreases the size of routing tables, improving overall router performance. The dual-stack architecture ensures compatibility and smooth transition to IPv6, which enhances network performance with features like route aggregation and endpoint auto-configuration.

Conclusion

In summary, a strategic IPv4 CIDR-based subnetting scheme combined with a well-structured IPv6 addressing plan will support West Consulting’s growth and connectivity needs. Routing protocols like OSPF, supporting both IPv4 and IPv6, will provide fast convergence, scalability, and performance efficiency. Thoughtful implementation of these solutions will enable the organization to maintain reliable, secure, and high-performance network operations well into the future.

References

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