Deterministic Inline Packet Processing at Line Rate
Enabled deterministic, zero-loss inspection of network traffic at full line rate, supporting environments where latency, precision, and completeness of data are non-negotiable.
Situation
The client required the ability to analyze network traffic in real time without introducing latency or packet loss. Traditional software-based approaches and CPU-bound appliances were unable to keep up with increasing throughput and burst patterns, particularly in environments with strict timing guarantees.
Solution
A custom FPGA-based inline processing architecture was designed to operate directly on network traffic as it traversed the wire. The design ensured that all packets were processed in flight without reliance on external memory or software intervention.
OUTCOMES
Challenges
Performance
- •CPU throughput limits
- •Packet loss risk
- •Burst traffic overload
Latency
- •Non-deterministic processing delay
- •Timing guarantee failures
Solutions
Inline Hardware Capture
Hardware-level packet capture via inline tap architecture.
- Captured packets directly on the wire
- Eliminated dependency on host processing paths
- Preserved timing integrity during inspection
Parallel Parsing Pipelines
Parallel packet parsing pipelines executing within a single clock cycle.
- Executed parsing within deterministic hardware stages
- Processed packets concurrently at line rate
Fixed Latency Processing
Deterministic processing paths with fixed latency characteristics.
- Ensured predictable packet handling delays
- Eliminated jitter introduced by software stacks
- Supported strict timing-sensitive environments
On-Chip Classification Logic
On-chip filtering and classification logic for real-time decisioning.
- Applied filtering directly within FPGA logic
- Enabled immediate packet classification actions
- Reduced downstream processing overhead
Zero-Copy Data Handling
Zero-copy data handling to eliminate buffering overhead.
- Removed intermediate memory transfers entirely
- Reduced buffering latency across pipelines
- Sustained continuous wire-speed throughput