BIG-IP i5000

BIG-IP i5000 is a high-performance F5 iSeries application delivery platform family designed for enterprise environments requiring advanced traffic management, SSL/TLS processing, application security, and reliable application availability. The family includes BIG-IP i5600 and BIG-IP i5800, providing increased processing capacity compared with lower iSeries platforms such as i2000 and i4000.

The i5000 Series was built for organizations running larger application environments where higher throughput, connection capacity, and SSL performance were important requirements. With a 1RU appliance design, high-speed networking interfaces, dedicated hardware acceleration, and support for multiple BIG-IP modules, these appliances were commonly deployed as enterprise application delivery controllers. Today, BIG-IP i5000 platforms are primarily evaluated for existing infrastructure support, license renewal, replacement planning, and migration projects toward newer F5 rSeries platforms.

Series Highlights

• Legacy F5 iSeries high-performance application delivery family
• Includes BIG-IP i5600 and BIG-IP i5800 models
• 1RU rack-mount appliance design
• Up to 40 Gbps L4/L7 throughput
• 64 GB DDR4 memory
• Dual 480 GB SSD storage
• Eight 10GbE SFP+ interfaces
• Hardware-assisted SSL/TLS acceleration

BIG-IP i5000 At a glance

What it is: Enterprise-class F5 iSeries physical application delivery platform

Product family: BIG-IP iSeries

Models: i5600 and i5800

Software architecture: BIG-IP TMOS

Memory: 64 GB DDR4

Storage: Dual 480 GB SSD

Interfaces: Eight 10GbE SFP+ ports

Maximum throughput: Up to 40 Gbps L4/L7

Series Overview

The BIG-IP i5000 family was designed for larger enterprise environments that needed more application-processing capacity than the lower iSeries models could provide.

The family includes two main models:

Both models use the same physical platform architecture, including a 1RU chassis, 64 GB DDR4 memory, dual SSD storage, and eight 10GbE SFP+ interfaces. The main difference between them is the performance entitlement applied through licensing.

The i5800 provides higher application throughput, connection handling, SSL transaction capacity, and compression performance compared with i5600. This makes the exact model important when reviewing an existing deployment or planning a hardware replacement.

Typical i5000 deployments included enterprise load balancing, SSL termination, application security controls, and access management services. Depending on licensing, organizations could enable modules such as LTM, DNS, APM, AFM, and Advanced WAF.

Licensing and Part Number Guidance

BIG-IP i5000 part numbers combine the physical appliance model with the required BIG-IP software entitlement, support coverage, and optional services.

When reviewing an existing i5000 environment, confirm:

• Exact appliance model (i5600 or i5800)
• Active BIG-IP modules
• Current license registration
• TMOS software version
• Support contract status
• Current traffic and SSL workload

The distinction between i5600 and i5800 is important because the same physical appliance family can support different performance levels depending on the applied license.

For organizations that already own i5600 hardware, upgrading the performance entitlement to i5800 capacity may be possible depending on the specific license structure and support status. For replacement projects, the newer F5 r5000 Series should be evaluated. rSeries uses a different architecture based on F5OS and BIG-IP tenants, which changes how resources, workloads, and future growth are planned.

Common Use Cases

Models, Licenses, and Ordering Scope

What to Check Before Requesting a Quote

For a BIG-IP i5000 request, the first step is identifying the existing platform and its current workload. Confirm whether the appliance is an i5600 or i5800, review enabled BIG-IP modules, measure application traffic, check SSL/TLS requirements, and determine whether the request is for renewal, expansion, replacement, or migration.

A common mistake in hardware refresh projects is selecting a replacement only by comparing model numbers. Newer F5 platforms use different architectures, so workload sizing is more important than direct model matching. For example, an i5800 handling Advanced WAF and heavy TLS inspection may require a different replacement design than an i5800 running only basic LTM services.

Before requesting a quote, also confirm:

• Current configuration backup availability
• Application dependencies
• HA requirements
• Required interfaces
• Support lifecycle expectations
• Migration timeline

Activation and Delivery Notes

BIG-IP i5000 appliances use the traditional F5 TMOS architecture. After installation, administrators activate the license, provision required modules, configure networking, import application policies, and verify failover operation. For HA deployments, both appliances should have compatible software versions, licensing, provisioning settings, and network configurations.

Unlike newer rSeries platforms, i5000 does not use F5OS or tenant-based deployment. Migration from i5000 to rSeries requires planning around application policies, licensing, and architecture differences. For replacement projects, validate software compatibility and configuration migration requirements before production cutover.