Evaluation of eBPF, XDP, and DPDK for Link Emulation
Low Earth Orbit mega-constellations like Starlink offer low-latency broadband but suffer from packet loss, delay variation, and reconfiguration events that cause delay spikes and packet reordering. To evaluate how transport protocols handle these conditions, trace-driven network emulation replays recorded link characteristics onto live traffic in real time.
We first examine how suitable network traces can be collected, look at the forwarding logic of the existing trace-driven emulators TheaterQ and PhantomLink, and evaluate whether eBPF and XDP can serve as a foundation for trace-driven satellite link emulation. We then present DANTE (DPDK Accelerated Network Trace Emulator), a layer 2 user-space emulator built on DPDK that emulates bandwidth, delay, packet loss, and route-aware reordering. In a virtualized environment at 1 Gbit/s, DANTE achieves an average delay offset of only 18 µs, far exceeding the throughput requirements of current LEO satellite links.
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https://fau.zoom-x.de/j/68350702053?pwd=UkF3aXY0QUdjeSsyR0tyRWtLQ0hYUT09
Meeting-ID: 683 5070 2053
Kenncode: 647333