Category: AWS Transit Gateway

This is a guest post co-written with Roshan Raj, Cloud Network Specialist at ZS Associates In this blog post, we will highlight challenges faced by ZS to keep cost under control while managing a large, complex global network infrastructure which spans across multiple AWS Regions. We will show how ZS used Network Orchestration for AWS […]

AWS Network Manager is a great tool that lets you monitor changes in your network and create automations. In this post, we cover how to leverage events in Network Manager to get notified about network changes and how to use AWS Serverless technologies to enrich the information provided by these events. Let’s start with a simple question: What is Network […]

AWS Transit Gateway is a network transit hub that enables you to connect thousands of Amazon Virtual Private Clouds (Amazon VPCs) and your on-premises networks using a single gateway. This simplifies your network connection and puts an end to complex peering relationships. AWS Transit Gateway Flow Logs enables you to export detailed telemetry information, such as source/destination […]

In April 2023, AWS increased several AWS Direct Connect quota limits, as you have asked for increased scale and capacity for hybrid cloud connectivity. With the new limits, you can now create up to four Transit Virtual interfaces (VIFs) per AWS Direct Connect dedicated connection. The maximum number of prefixes has increased to 200 for […]

In multi-Region AWS Cloud WAN deployments, customers deploy centralized architectures for use cases such as traffic inspection, hybrid connectivity (using AWS Transit Gateways and AWS Direct Connect), and internet egress. For internet egress, you may use a single egress VPC per AWS Region or per geography (collection of AWS Regions), for example, Americas (AMER GEO), […]

Introduction Amazon Virtual Private Cloud (Amazon VPC) use Network Address Translation (NAT) so resources in private subnets can communicate with resources in the internet, other VPCs, on-premises networks, or even the same VPC using the NAT Gateway’s IP address. Amazon VPC NAT Gateway is managed by AWS and addresses this need while providing redundancy, scalability, […]

Update: Jan 14, 2025 – AWS launched built-in support for Direct Connect attachments without requiring a TGW. For more information, please see the following launch blog AWS Cloud WAN is a managed wide-area networking (WAN) service for building, managing, and monitoring a unified global network, as well as connecting resources running across your cloud and […]

In this post, we provide recommendations to improve network performance on AWS and hybrid networks. In today’s enterprise networking environment, it is becoming common for customers to have multi-gigabit connectivity to AWS either through AWS Direct Connect or over the Internet. Although network bandwidth is fundamental, several other factors come into play for network performance, […]

Virtual Routing and Forwarding (VRF) is a traditional network feature which uses isolated logical routing domains (route tables/VRFs) to keep network traffic separated within the same physical infrastructure. Customers ask us how to combine the segmentation provided by AWS Cloud WAN and AWS Transit Gateway with VRF isolation when connecting their on-premises networks to AWS. […]

AWS Cloud WAN makes it easy to build and operate wide area networks that connect your data centers and branch offices, as well as your Amazon Virtual Private Clouds (VPCs). With Cloud WAN, you connect to AWS through your choice of local network providers, then use a central dashboard and network policies to create a […]