F5-BIG-LC-R5600 Link Controller

F5-BIG-LC-R5600 – High-end Link Controller for Mid-size to Large Enterprises

As the high-performance starting point of the r5000 series, the F5-BIG-LC-R5600 represents a qualitative leap compared to the R4000 serie, serving as a watershed in connecting enterprise core networks. Its most critical upgrades include the first native introduction of 100G/40G high-speed core ports and the addition of doubled massive memory at 128GB. These advantages enable the F5-BIG-LC-R5600 to handle larger-scale and more core network positions, providing a future-proof strategic investment for large enterprises, regional cloud service providers, and government agencies that manage multiple high-speed Internet leased lines.

F5-BIG-LC-R5600 Features

60Gbps Link Aggregation Throughput
The F5-BIG-LC-R5600 delivers up to 60Gbps total throughput, easily managing/aggregating multiple 10-gigabit leased lines or backing up higher-bandwidth links. It serves as a high-performance, resilient internet gateway for data centers.

1 Million Connections per Second
Powered by strong processing cores, it handles 1 million new connections/second. As an intelligent DNS server for global inbound traffic, this performance is vital for high-traffic sites, online services, and SaaS platforms — ensuring low-latency DNS resolution and precise routing to optimal paths.

Enterprise-Grade 12-Core Processing
With 12 vCPUs for business tasks, it executes thousands of complex outbound routing policies in real time (based on apps or user criteria). Whether scheduling by cost, latency, or app type, it makes quick decisions to maximize bandwidth ROI.

Sub-Second Link Health Monitoring
Offers enterprise-grade link high availability via 24/7 sub-second monitoring. On ISP link failure, traffic switches instantly to healthy links, keeping critical business connectivity uninterrupted.

F5-BIG-LC-R5600 Datasheet

• L4/L7 Throughput: 60 Gbps / 60 Gbps
• Max L4 Concurrent Connections: 75M
• L4 Connections Per Second: 1,000,000
• Memory: 128 GB DDR4
• Primary Ports: 2x 100G/40G QSFP+, 8x 25G/10G SFP+
• Hardware Redundancy: Optional Dual PSU, Single Drive

Q1: What’s the main reason to choose the LC-R5600 over the LC-R4800?
A: If your data center core network has already moved to—or is planning to upgrade to—40G/100G, you’ll need to choose the F5-BIG-LC-R5600 or a higher model to avoid having your ADC become a network bottleneck.

Q2: Why does the LC-R5600 have 12 processing cores while the LC-R4800 has 16?
A: This comes down to differences in processor architecture and platform design. While the LC-R5600 has slightly fewer vCPUs, it features double the memory and significantly higher overall throughput. Its platform delivers far superior performance compared to the R4000 series, making it a more advanced solution.

Q3: Can the LC-R5600 handle multiple 10G internet connections?
A: Absolutely—and with ease. With 60Gbps total throughput and a flexible mix of 10G/25G/100G ports, the F5-BIG-LC-R5600 easily aggregates and manages multiple 10G links while leaving plenty of headroom for future bandwidth growth and traffic spikes.