VxLan Virtual Extensible LAN (VxLAN) is a standardized encapsulation protocol that stretches layer 2 connections over a layer 3 routed network, and it is primarily used in larger enterprises, service providers, and cloud data centers. VxLAN is an overlay encapsulation protocol that scales up to 16 million logical networks by adding a 24-bit ID to […]

Jumbo Frames Direct Connect supports jumbo frames on the customer interconnect point from 1,522 to 9,023 bytes (14 bytes Ethernet header + 4 bytes VLAN tag + bytes for the IP datagram + 4 bytes FCS) at the OSI link layer 2. Jumbo frame support allows for a more efficient transmission of frames over an […]

VLANs Virtual local area networks (VLANs) are widely implemented in all types of data networks. A VLAN is defined as being a logical overlay network on a LAN that has IEEE 802.1Q addressing to group, a subset of devices, sharing a physical LAN with other devices, isolating the traffic for each VLAN. VLANs are used […]

Optics Modern network interfaces include options for either electrical or optical media types. In this section, you will learn about fiber-optic networks. Fiber-optic media has many advantages over copper in most deployments. For example, fiber cables are not subject to electrical magnetic interference since they transmit optical, not electrical, signals. Fiber cables are much more […]

THE AWS CERTIFIED ADVANCED NETWORKING – SPECIALTY EXAM OBJECTIVES COVERED IN THIS CHAPTER MAY INCLUDE, BUT ARE NOT LIMITED TO, THE FOLLOWING: Objective 1.5: Design a routing strategy and connectivity architecture between on-premises networks and the AWS Cloud. Objective 1.6: Design a routing strategy and connectivity architecture that include multiple AWS accounts, AWS Regions, and […]

Written Labs Written Lab 5.1: Enable CloudWatch Detailed Monitoring for an Instance That Has Already Been Enabled Written Lab 5.2: Enable CloudWatch Logging from the Web Console Written Lab 5.3: Enable CloudWatch Alarms from the Web Console Written Lab 5.4: Create a VPC Reachability Analyzer from the Web Console

Review Questions The following questions are designed to test your understanding of this chapter’s material. For more information on how to obtain additional questions, please see this book’s introduction.

Exam Essentials Know CloudWatch in detail. CloudWatch is the key service in the AWS logging and monitoring suite of services. Know that it is a metric and logging collection service that has many additional utilities to manage, monitor, gain insights, and store the collected data. AWS and external applications export log and metric data into […]

Application Insights Application Insights is an AWS managed service that can automatically perform discovery on resources and workloads that it supports. After the discovery process is completed, the service will configure a CloudWatch agent, alarms, metrics, and logs based on AWS best practices. The service helps you identify issues and resolve problems with your applications, […]

Baseline Network Performance Baseline data collected from monitoring metrics and logs are used to understand your usage over time and to create a performance baseline. Baselines can help you understand what is considered a normal usage pattern. When the tracking data exceeds the baseline metrics, you will have visibility into what is out of range […]