REL02-BP02: Provision redundant connectivity between private networks in the cloud and on-premises environments

Overview

Establish redundant and resilient connectivity between your on-premises infrastructure and AWS cloud environments to ensure reliable hybrid network operations. This involves implementing multiple connection types, redundant paths, and automated failover mechanisms to eliminate single points of failure in your hybrid network architecture.

Implementation Steps

1. Design Redundant Hybrid Connectivity Architecture

Implement multiple AWS Direct Connect connections across different locations
Configure redundant VPN connections as backup paths
Set up AWS Transit Gateway for centralized connectivity management
Establish diverse network paths to eliminate single points of failure

2. Deploy Multi-Path Network Connectivity

Configure primary and secondary Direct Connect connections
Implement VPN backup connections with automatic failover
Set up redundant customer gateways and virtual private gateways
Establish diverse physical network paths and carrier diversity

3. Implement Intelligent Traffic Routing

Configure BGP routing with path preferences and failover
Set up dynamic routing protocols for automatic path selection
Implement traffic engineering and load balancing across connections
Establish route propagation and filtering policies

4. Configure Network Monitoring and Health Checks

Deploy comprehensive network monitoring across all connection types
Set up automated health checks and performance monitoring
Configure alerting for connection failures and performance degradation
Implement network analytics and troubleshooting tools

5. Establish Security and Compliance Controls

Configure encryption for all hybrid network connections
Implement network segmentation and access controls
Set up compliance monitoring and audit trails
Establish security policies for hybrid network traffic

6. Deploy Automated Failover and Recovery

Configure automatic failover between connection types
Implement intelligent routing based on connection health
Set up automated recovery procedures and testing
Establish disaster recovery and business continuity procedures

Implementation Examples

Example 1: Multi-Path Direct Connect and VPN Hybrid Architecture

Example 2: Automated Network Health Monitoring and Failover System

Example 3: CloudFormation Template for Redundant Hybrid Connectivity

Example 4: Network Connectivity Testing and Validation Framework

AWS Services Used

AWS Transit Gateway: Centralized hub for connecting VPCs and on-premises networks
AWS Direct Connect: Dedicated network connections with high bandwidth and low latency
AWS VPN: Encrypted IPsec VPN connections for backup connectivity
Direct Connect Gateway: Connects multiple VPCs to Direct Connect connections
Customer Gateway: Represents on-premises VPN device configuration
Virtual Private Gateway: AWS-side VPN endpoint (legacy, replaced by Transit Gateway)
Amazon Route 53: DNS resolution and health checks for hybrid environments
Amazon CloudWatch: Network monitoring, metrics, and automated alerting
AWS CloudFormation: Infrastructure as code for hybrid network deployment
VPC Flow Logs: Network traffic analysis and security monitoring
AWS Systems Manager: Configuration management and automation
Amazon SNS: Notification service for network alerts and events

Benefits

Redundant Connectivity: Multiple connection types eliminate single points of failure
Automatic Failover: Intelligent routing ensures seamless failover between connections
High Performance: Direct Connect provides consistent, high-bandwidth connectivity
Cost Optimization: VPN backup connections provide cost-effective redundancy
Centralized Management: Transit Gateway simplifies complex network topologies
Enhanced Security: Encrypted connections and network segmentation
Scalability: Easy addition of new VPCs and on-premises locations
Monitoring and Visibility: Comprehensive network monitoring and alerting
Disaster Recovery: Cross-region connectivity for business continuity
Compliance: Network audit trails and security controls