TharinduHimantha/Minimal-Network-Switch-Verilog-Implementation

All modules were developed and smoke-tested with Icarus Verilog. Hence requires Icarus Verilog 11 or newer to simulate the build.

./run_sim.sh        # 4-port system test + MAC aging test
./run_sim.sh 8      # same system test with NUM_PORTS = 8

<div align="center"> <img src="assets/terminal.svg" alt="Animated terminal showing the regression passing" width="90%"/> </div> <br>

To custom instantiate the switch, change the parameters as needed

l2_switch_top #(
    .NUM_PORTS      (4),
    .ING_FIFO_DEPTH (256),
    .EGR_FIFO_DEPTH (256),
    .EGR_STORE_FWD  (1)
) u_switch (
    .clk(clk), .rst_n_async(rst_n),
    .rx_data(rx_data), .rx_sop(rx_sop), .rx_eop(rx_eop), .rx_valid(rx_valid), .rx_ready(rx_ready),
    .tx_data(tx_data), .tx_sop(tx_sop), .tx_eop(tx_eop), .tx_valid(tx_valid), .tx_ready(tx_ready),
    .table_ready(table_ready),
    .cnt_rx_frames(), .cnt_tx_frames(), .cnt_runts(), .cnt_vlan_frames(),
    .cnt_filtered(), .cnt_rx_stall(), .cnt_tx_stall()
);

Wait for table_ready (about 128 cycles at the default table size) before sending traffic.

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