IPv6 for Enterprise Networks

Internet evolution and the need for IPv6: This section focuses on the existing solutions that extend the life of the Internet and the advantages that IPv6 provides over other solutions. This section also outlines the IPv6 market drivers and the frequently asked questions/concerns about IPv6. IPv6 in the IETF: As IPv6 goes mainstream, it is […]

IPv6 Market Drivers

IPv6 helps open doors for new revenue stream opportunities by enabling new applications and enabling enterprises to expand their businesses globally. The four primary factors driving IPv6 adoption, as illustrated in Figure 1-1, include ■ IPv4 address considerations ■ Government IT strategy ■ Infrastructure evolution ■ Operating system support IPv4 Address Consideration • IPv4 address […]

Commonly Asked Questions About IPv6

IPv6 has been on the way for more than 10 years now, yet for much of the world, it has been irrelevant until recently. Now, as the shortage of IPv4 addresses begins to become obvious to even the most hardened skeptic, awareness and interest are growing. The following sections address some commonly asked questions or […]

IPv6 in the IETF

Since 1995, the IETF has actively worked on developing IPv6-related IETF drafts and RFCs in various working groups to include the following: ■ Applications area ■ Internet area ■ Operations and management area ■ Real-time applications and infrastructure area ■ Routing area ■ Security area ■ Transport area Some of the most active areas for […]

Enterprise IPv6 Deployment Status

With more than 15 years of standards body representation and 10 years of development, IPv6 is now adopted by many large service providers and enterprises. Today, IPv6 is a robust and mature protocol that enables revitalization and innovation of new applications. IPv6 deployment is happening across many vertical industries, as shown in Table 1-2. Table […]

Network Design Principles (IPv6)

This topic covers the following subjects: ■ Network design principles: This section reviews the three pillars needed to design enterprise networks: modularity, hierarchy, and resiliency. The subsequent sections extend these concepts by segmenting the enterprise network into multiple blocks. The subsequent sections go into details of each of these modules. ■ Enterprise core network design: […]

Enterprise Core Network Design (IPv6)

The core layer is the simplest yet the most critical layer. This layer is the backbone of the network. The core needs to be highly reliable and switch high traffic loads as fast as possible. It provides a limited set of services and is highly available using redundant devices and configurations to ensure that software […]

Enterprise Campus Network Design (IPv6)

The campus network architecture is based on the use of two basic blocks or modules connected through the core of the network: ■ Distribution layer ■ Access layer The following sections describe both layers in detail. Distribution Layer The distribution layer interconnects the access layer switches to the core of the network. A large enterprise […]

Enterprise Network Services Design (IPv6)

The network services module is a relatively new element to the campus design. As campus network planners begin to consider migration to dual-stack IPv4/IPv6 environments, and continue to integrate more sophisticated Unified Communications services, a number of challenges lie ahead. It will be essential to integrate these services into the campus smoothly—while providing the appropriate […]

Enterprise Data Center Network Design (IPv6)

Data center design is similar to the enterprise campus with a few exceptions, such as a few features and product and performance differences. Other than those, routing is routing and switching is switching. The data center multilayered architecture consists of the following layers: ■ Aggregation layer: The aggregation layer is the termination point for the […]