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AWS Certified Advanced Networking – Specialty (ANS-C01) Certification Guide
AWS Certified Advanced Networking – Specialty (ANS-C01) Certification Guide

AWS Certified Advanced Networking – Specialty (ANS-C01) Certification Guide: A pragmatic guide to acing the AWS ANS-C01 exam

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Profile Icon Tim McConnaughy Profile Icon Steve McNutt Profile Icon Christopher Miles
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Early Access Early Access Publishing in Jan 2025
$49.99
Paperback Jan 2025 1st Edition
eBook
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Arrow left icon
Profile Icon Tim McConnaughy Profile Icon Steve McNutt Profile Icon Christopher Miles
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Early Access Early Access Publishing in Jan 2025
$49.99
Paperback Jan 2025 1st Edition
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Paperback
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AWS Certified Advanced Networking – Specialty (ANS-C01) Certification Guide

VPC Traffic and Performance Monitoring

When administrating a cloud network, it can be important to understand the various problems that can arise and how to effectively diagnose and troubleshoot them to restore services quickly. Business recovery and continuity are among the most critical needs of any company, and neither is possible without understanding what is happening within the technical resources underpinning the applications that drive business revenue and outcomes. AWS has come a long way from the first-generation monitoring options, and their inclusion of smarter networking has brought with it smarter monitoring tools. Understanding how to monitor traffic and performance within a VPC will help minimize any business impact, which is a crucial skill for a cloud network engineer.

In this chapter, you will cover the following topics:

Potential cloud network problems

Metrics and logging

AWS performance monitoring services

Monitoring and troubleshooting

Troubleshooting...

Potential Cloud Network Problems

Depending on the application and design, not all things you can monitor in the cloud are associated with problems. AWS gives its users an impressive number of metrics associated with its various services, and the only guarantee is that you will never need all of them at once. In the following sections, you will learn about the various issues that impact cloud networking and how to diagnose and ultimately resolve many of them.

IP Address Allocation

Situations where multiple resources have been misconfigured with the same address can happen in the cloud, and discovery of this problem can be challenging. Other common problems include exhausting the IP addresses in a subnet or VPC or allocating IP addresses to multiple VPCs, then having to implement a solution to deal with overlapping IP addresses because the resources in those VPCs must communicate with each other. This is very common in scenarios where different teams are responsible for different...

Metrics and Logging

What sort of information would be needed to diagnose some of these problems? How would a system effectively provide that information to a cloud network engineer? Most importantly, how could that information be consumable and actionable? In this section, you will learn about the kind of metrics and logging that would make the diagnosis of problems possible. Metrics are the measurements of the performance of a cloud network, while logging focuses on the recording of problems and events that can aid in the discovery of problems in a cloud network.

IP Address Management

One of the most fundamental metrics affecting cloud networking is simply knowing how the IP addresses available to use are allocated, where they are allocated, and what remains that can be used to expand the network. AWS provides an IPAM solution that will keep track of all the IP addresses in use and available across your deployment. With this information centrally managed, AWS IPAM allows you...

AWS Performance Monitoring Services

In this section, you will explore the AWS services supporting monitoring and performance in detail using the AWS tools provided for this purpose, such as the following:

  • CloudWatch
  • CloudTrail
  • VPC Flow Logs
  • VPC Traffic Mirroring
  • Network Manager

The purpose of monitoring is to aid in capacity planning through the interpretation of trends, to diagnose and troubleshoot issues occurring across your network, and to gain a better understanding of the behavior of applications across your organization. By the end of this section, you should understand the tooling that AWS provides, and, at a high level, which tool is appropriate to use when diagnosing or troubleshooting problems that occur.

Amazon CloudWatch

CloudWatch is the AWS metric logging and alerting service. This book does not focus on the hundreds of AWS services that can use CloudWatch for logging, alerting, and visualization. Instead, the focus of CloudWatch...

Monitoring and Troubleshooting

This section focuses on how to create logging and alerts for the various services in AWS, followed by some common troubleshooting methods you may be called on to use as a cloud network engineer.

Log Creation for CloudWatch and S3

Logs must be exported somewhere for analysis. No matter what service is being logged, CloudWatch requires a logging group to be created to serve as a container and target for those logs. Commonly, log groups are segregated by function or service.

Creating a log group in CloudWatch is very simple. It can be done via the AWS CLI, SDK, or API, but in this case, it will be done using the AWS console. If the Trailcats administrators found themselves in a situation where a particular server or AWS service needed to be logged for diagnosis of an intermittent, recurring issue, for example, they would need to create a CloudWatch log group to serve as the target to collect these logs. Here is how they could do that:

  1. From...

Troubleshooting Packet Size Issues

This section will be dedicated to the sort of problems that happen when packets and frames are mismatched along the path of a network flow, as well as how to capture, diagnose, and correct the problem.

Trailcats recently migrated an application to the cloud from the on-premises data center as part of a migration project. After migrating the application to the cloud and setting up connectivity to an AWS TGW over an S2S VPN, users have complained about slowness in application performance. It’s time to investigate the problem. Figure 4.8 shows the relevant traffic flow:

Figure 4.8: On-premises traffic going to cloud resourceIn this case, the application is hosted in the AWS cloud, and the users are connecting to the application over the new WAN connection. To further investigate the slowness problem, consider what changed when migrating the connectivity between a locally hosted data center to one connected over the internet with a VPN.

Figure 4.8: On-premises traffic going to cloud resourceIn this case, the application is hosted in the AWS cloud, and the users are connecting to the application over the new WAN connection. To further investigate the slowness problem, consider what changed when migrating the connectivity between a locally hosted data center to one connected over the...

Summary

In this chapter, we examined the definition and purpose of monitoring and troubleshooting within the AWS cloud by listing the potential problems, pitfalls, and issues that can cause problems with a cloud network deployment, providing details on each of these potential issues, and the most effective tooling available in AWS to diagnose and troubleshoot them. We then walked through the details of creating some of the most useful (and used) diagnosis and troubleshooting tools in AWS. Understanding the problems that can plague a cloud network, how they can be monitored, and how the problems can be discovered using AWS tools is an important part of administrating a cloud network.

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Key benefits

  • Get a thorough understanding of the latest AWS ANS-C01 exam objectives
  • Explore AWS networking options, services, features, and their relationships
  • Prepare for exam success with mock exams that correctly reflect exam-level difficulty

Description

The AWS Certified Advanced Networking – Specialty certification exam focuses on leveraging AWS services alongside industry standards to create secure, resilient, and scalable cloud networks. Written by industry experts with decades of experience in the field, this comprehensive exam guide will enable you to transform into an AWS networking expert, going beyond the ANS-C01 exam blueprint to maximize your impact in the field. You’ll learn all about intricate AWS networking options and services with clear explanations, detailed diagrams, and practice questions in each chapter. The chapters help you gain hands-on experience with essential components, such as VPC networking, AWS Direct Connect, Route 53, security frameworks, and infrastructure as code. With access to mock exams, interactive flashcards, and invaluable exam tips, you have everything you need to excel in the AWS ANS-C01 exam. This book not only prepares you to confidently take the exam, but also deepens your understanding and provides practical insights that are vital for a successful career in AWS cloud networking. By the end of this exam guide, you’ll be thoroughly trained to take the AWS ANS-C01 exam and efficiently design and maintain network architectures across a wide range of AWS services.

Who is this book for?

This book is for professional networkers who want to achieve certification in AWS cloud networking. Anyone currently working as a network engineer or architect, as well as individuals looking to transition into AWS networking will also find this book valuable. A foundational understanding of basic network concepts and an in-depth knowledge of the cloud service connectivity model, specifically the distinctions between IaaS, PaaS, and SaaS services.

What you will learn

  • Build resilient, scalable networks by using AWS network constructs
  • Integrate hybrid connectivity models by using AWS and third-party architecture
  • Assess the various load balancing and DNS options that AWS provides
  • Examine security frameworks in AWS and the constructs that support secure connectivity
  • Utilize AWS monitoring tools to optimize and diagnose network connectivity
  • Comprehend AWS ANS-C01 exam questions to maximize your chances of answering correctly
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Chapter 4: VPC Traffic and Performance Monitoring Chevron down icon Chevron up icon
Chapter 5: Networking across Multiple AWS Accounts Chevron down icon Chevron up icon
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