F5 BIG-LTM 3400 vs F5 BIG-BT-I5800: A Technical Showdown for Advanced Traffic Management

Jun 27 , 2025 2

F5 BIG-LTM 3400 vs F5 BIG-BT-I5800: A Technical Showdown for Advanced Traffic Management

Enterprises today face escalating demands for scalable, secure, and high-performance network traffic management. F5 Networks’ BIG-IP series offers a range of solutions tailored to diverse environments, but selecting between the BIG-LTM 3400 and BIG-BT-I5800 requires a nuanced understanding of their capabilities. Here’s a detailed comparison to guide your decision.

1. Core Functionalities

Both platforms excel in load balancing and security, but their strengths diverge based on use cases:

• BIG-LTM 3400:

• Edge-First Architecture: Optimized for branch offices and mid-sized data centers, delivering reliable performance for SMBs.

• SSL/TLS Offloading: Accelerates encrypted traffic with up to 10Gbps throughput, ideal for remote workforces.

• Edge Compute Integration: Seamlessly connects with F5’s Distributed Cloud for hybrid app deployments.

• BIG-BT-I5800:

• Broadband Traffic Optimization: Engineered for large enterprises deploying IoT, video streaming, and edge computing.

• Deep Packet Inspection (DPI): Classify and prioritize traffic with 99.9% accuracy using behavioral analytics.

• Edge AI Integration: Native support for F5’s Distributed Cloud AI/ML models for anomaly detection.

2. Performance Benchmarks

3. Design & Aesthetics

• BIG-LTM 3400:

• 1U Rack-Mount: Compact form factor for space-constrained environments.

• Fanless Operation: Silent operation ideal for office settings.

• Fixed Configuration: Simplifies deployment with pre-integrated 10GbE ports.

• BIG-BT-I5800:

• 2U Rack-Mount: Redundant power supplies and hot-swappable components ensure 99.999% uptime.

• Modular Expansion: Supports up to 16 100GbE ports via expansion slots.

• Active-Active Clustering: Scales horizontally with up to 8 chassis in a cluster.

4. User Experience

• Management Interface:

• Both offer intuitive GUI (F5 BIG-IP Configuration Utility) and CLI.

• BIG-BT-I5800 Adds: Dedicated DPI policy wizards and multi-tenant dashboards.

• Automation:

• BIG-LTM 3400: Tight Ansible/Terraform integration for DevOps.

• BIG-BT-I5800: Advanced scripting tools for bespoke traffic shaping.

5. Pricing Structure

• BIG-LTM 3400:

• List Price: 10,000–15,000.

• ROI: Cost-effective for SMBs prioritizing simplicity and mid-range scalability.

• BIG-BT-I5800:

• List Price: 25,000–35,000.

• Ideal For: Enterprises demanding extreme scalability and carrier-grade redundancy.

6. Battery Consumption

• BIG-LTM 3400:

• Low power draw (~450W) thanks to fixed configurations and fanless design.

• BIG-BT-I5800:

• Higher power consumption (~800W) due to redundant components and modular architecture.

7. Compatibility & Scalability

• BIG-LTM 3400:

• Limited to 4x 10GbE ports and 16GB RAM, though expandable with inline acceleration cards.

• Optimized for VMware NSX and AWS Outposts.

• BIG-BT-I5800:

• Supports up to 16x 40GbE ports and 64GB RAM, scalable via expansion modules.

• Integrates with F5’s Carrier-Grade NAT (CGNAT) and SD-WAN solutions.

8. Software Ecosystem

• BIG-LTM 3400:

• Runs TMOS 16.x with streamlined app delivery and security profiles.

• Priority access to F5’s Distributed Cloud SaaS security features.

• BIG-BT-I5800:

• TMOS 17.x with advanced DPI and multi-tenancy capabilities.

• Annual updates focused on carrier-grade enhancements.

Final Verdict

• Choose BIG-LTM 3400 If:
  You need a reliable, budget-friendly solution for edge deployments or SMB environments with predictable traffic patterns.

• Choose BIG-BT-I5800 If:
  Your organization demands extreme scalability, advanced protocol support, and future-proofing for carrier-grade networks.

Pro Tip: For enterprises transitioning to 5G/MEC architectures, the BT-I5800’s DPI capabilities and clustering support justify the investment.