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Performance tests

The objective of the performance tests is to measure end-to-end forwarding performance.

Topology​

figure

The physical testbed topology consists of three nodes: a Traffic Generator (TG) and two Devices Under Test (DUT1 and DUT2). DUT1 and DUT2 are Anapaya appliances interconnected via a SCION link.

note

The Traffic Generator and DUT2 configurations remain fixed across all test scenarios:

Traffic flow​

The Traffic Generator injects bidirectional traffic. The packet path is defined as follows:

  • Direction 1: TG → DUT1 → [SCION Link] → DUT2 → TG
  • Direction 2: TG → DUT2 → [SCION Link] → DUT1 → TG

Throughput rates and forwarding performance are measured by the Traffic Generator at the ingress/egress points. The offered load is distributed symmetrically (50/50) between the two directions.

Test scenarios​

The following test cases are executed to benchmark forwarding plane performance:

  • SCION: Native forwarding of SCION packets.
  • IP-in-SCION tunneling: Forwarding of IP packets encapsulated within SCION headers.
  • IP-in-SCION tunneling with encryption: Forwarding of IP packets encapsulated within SCION headers, with payload encryption enabled.

Traffic Profiles​

Traffic is generated using the following profiles:

  • SCION4 IMIX: IPv4 packets encapsulated in SCION, following a standard IMIX distribution (28:16:4 ratio):
    • ~58% packets of 136 bytes
    • ~33% packets of 570 bytes
    • ~8% packets of 1518 bytes
  • IPv4 IMIX: Native IPv4 packets following a standard IMIX distribution (28:16:4 ratio):
    • ~58% packets of 64 bytes
    • ~33% packets of 570 bytes
    • ~8% packets of 1518 bytes