Book Image

Network Architect's Handbook

By : Alim H. Ali
Book Image

Network Architect's Handbook

By: Alim H. Ali

Overview of this book

Becoming a network architect is challenging—it demands hands-on engineering skills, encompassing hardware installation, configuration, and fabric layout design. Equally crucial, it involves collaboration with internal teams and C-Suite stakeholders, and adeptly managing external entities like vendors and service providers. The Network Architect's Handbook comprehensively covers these vital aspects, guiding you to evolve into an effective network architect within an organization, fostering seamless communication with leadership teams and other stakeholders. Starting with a clear definition of a network architect’s role, this book lays out a roadmap and delves into the attributes and mindset for success. You’ll then explore network architect design, physical infrastructure routing and switching, and network services such as DNS, MLAG, and service insertion. As you progress, you’ll gain insights into the necessary skills and typical daily challenges faced by network architects. And to thoroughly prepare you to advance in your career, this handbook covers certifications and associated training for maintaining relevance in an organization, along with common interview questions for a network architect's position. Armed with essential concepts, techniques, and your newfound skills, you’ll be well-prepared to pursue a career as a network architect.
Table of Contents (19 chapters)
1
Part 1 – Navigating the Architectural Blueprint of Networking
5
Part 2 – Crafting the Architectural Mind: Attributes and Mindset of a Network Architect
8
Part 3 – Constructing the Core: Building Blocks of a Network Architect
13
Part 4 – Mastering the Craft: Advancing Your Journey as a Network Architect

Routers and routing concepts

Network routers are essential networking devices that play a crucial role in IT infrastructure and networks. Routers operate at the network layer (Layer 3) of the OSI model and are responsible for forwarding data packets, based on the optimal path selected, between different networks or subnets.

Routers perform traffic directing by connecting dissimilar networks together via the routing process. For example, look at the following diagram – on the left of the router exists the 12.11.0.0/24 network, and on the right exists the 5.18.0.0/24 network (these IP addresses and networks are used for illustration purposes only):

Figure 6.21 – Simple routed network

Figure 6.21 – Simple routed network

Under normal operational conditions, these end devices will not be able to communicate with one another as the devices are not on the same network segment. A network router is utilized to perform routing functions to allow these end devices to communicate with...