This library must know which routers are available under which address, and how many interfaces are available, and how they are connected. To do that, you first need to edit config/routers.toml. Write all router names there. Make sure that you have proper ssh configuration. Each router must be reachable using ssh ${router_name} without any password (using SSH keys). Then, generate the configurations for each router as follows:
ssh_name = "router-name"
mgnt_addr = "1.2.3.4"
ifaces = [
# [iface name, MAC, Tofino port descriptor, Tofino internal port number]
["Ethernet1/1", 0xaabbccddee01, "1/0", 130],
["Ethernet1/2", 0xaabbccddee02, "1/1", 131],
["Ethernet1/3", 0xaabbccddee03, "1/2", 132],
["Ethernet1/4", 0xaabbccddee04, "1/3", 133],
]Also, make sure to export the path to the configuration into the environment variable LAB_SETUP_CONFIG.
We have devised programs to emulate physical network delays (tools/delayer), introduce active probing traffic in the network for measurements (tools/prober) and evaluating the measurement traffic at a destination server (tools/collector).