Best Practices to Optimize Failover Times for Overlay Tunnels on AWS Direct Connect
Networking & Content Delivery Blog
This article provides comprehensive guidance on optimizing failover times for overlay tunnels on AWS Direct Connect, focusing on reducing network downtime and improving connectivity reliability.
- Key optimization strategies include:
- Reducing BGP hold and keepalive timers
- Enabling Bidirectional Forwarding Detection (BFD)
- Comparing pinned vs. unpinned tunnel configurations
- BFD can reduce failover times by 90%, from 3 seconds to 300 milliseconds
- Unpinned tunnel configurations offer faster failover compared to pinned tunnels
- Recommended approach: Use unpinned tunnels with BFD for optimal performance
The article emphasizes the importance of careful implementation, hardware compatibility, and incremental testing to achieve optimal network resilience in hybrid cloud environments.
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