● Covered by 1 source · 1 reportLow impact1 neutral
ArcBox Labs Addresses UniFi PPPoE Performance Issues with PPPoE Half-Bridge Solution
Key points
- UniFi gateways lack PPPoE and NAT hardware acceleration.
- PPPoE performance on most UniFi models is limited to 1.2-2.4 Gbps.
- ArcBox Labs created a PPPoE Half-Bridge to fix this.
- The UCG Fiber model has PPPoE hardware acceleration and exceeds 5 Gbps.
UniFi Gateway PPPoE Performance Limitations
Many UniFi gateways, including the UDM Pro, UDM SE, UDM Pro Max, and UXG Pro, do not support hardware acceleration for PPPoE or NAT. This absence results in significant throughput reductions when these gateways are used with PPPoE-based internet service provider connections. Users frequently report speeds far below their subscribed line rates, with typical performance ranging from 1200 Mbps to 2400 Mbps depending on the model.
Impact of PPPoE on Gateway Performance
PPPoE, a protocol used by ISPs for authentication and billing, requires the router to encapsulate and de-encapsulate PPP frames within Ethernet frames for every packet. While the added 8-byte overhead is minimal, the processing demands of this protocol can strain the gateway's CPU, especially without dedicated hardware acceleration. This CPU load is the primary cause of the observed performance bottlenecks.
ArcBox Labs' PPPoE Half-Bridge Solution
ArcBox Labs developed a PPPoE Half-Bridge to address these performance issues. This solution aims to circumvent the limitations of UniFi gateways by optimizing how PPPoE traffic is handled, allowing users to achieve higher throughput closer to their subscribed speeds. The UCG Fiber model, which incorporates a MediaTek Filogic 880 SoC with PPPoE hardware acceleration, demonstrates that speeds exceeding 5000 Mbps are achievable with proper hardware support.
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Reporting from
ArcBox Labs developed a PPPoE Half-Bridge solution to mitigate slow PPPoE performance on UniFi gateways, which often struggle to achieve rated line speeds due to a lack of hardware acceleration for PPPoE and NAT. This solution allows UniFi users to bypass the performance limitations imposed by the gateways' CPUs when using PPPoE-based ISP connections.