Understanding Azure Routing Architecture – Part 3

Overview

This architecture diagram illustrates the setup of route tables in an Azure Virtual Network (VNet) environment. The main components of this architecture include a Virtual Network (VNet), Subnets, Virtual Machines (VMs), and a Firewall for security.

Components

  1. Virtual Network (VNet)
    • The VNet is the primary component that contains all the networking resources. It provides the underlying network infrastructure for Azure resources.
  2. Subnets
    • Subnets are segments within the VNet that allow you to organize and isolate resources. In this architecture, there is one subnet depicted.
  3. Virtual Machines (VMs)
    • Two VMs are represented, one located in the East US region and the other in the West US region. These VMs are deployed within the same subnet.
  • Virtual VM East US
  • Virtual VM West US
  1. Route Table
    • The route table is associated with the subnet and defines how traffic is routed between different subnets and external networks. It is a critical component for directing traffic efficiently and securely.
  2. Firewall
    • The Firewall is a security component placed at the boundary of the subnet. It is responsible for inspecting incoming and outgoing traffic and enforcing security policies to protect the network.

Flow

  1. Networking Setup
    • The VNet encompasses all networking elements, ensuring connectivity within the Azure environment.
    • Subnets within the VNet are defined to segment the network and organize resources.
  2. VM Deployment
    • VMs are deployed within the subnet. The East US and West US VMs are connected to the subnet, enabling communication and resource sharing within the network.
  3. Routing and Security
    • The route table associated with the subnet determines the routing of traffic within the VNet and to external networks.
    • Traffic from the VMs passes through the subnet and is inspected by the Firewall before being allowed to enter or leave the network, ensuring security compliance.

Conclusion

This architecture provides a high-level view of how route tables are configured within an Azure VNet environment. It demonstrates the integration of networking components, VMs, and security measures to ensure efficient and secure communication within and outside the Azure network.

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