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Symptom: Connecting the EDGE-RK3576 device brings down the entire network.

Environment:

  1. Fixed IP
  2. Device reboots at 2 AM every day
  3. 4 machines in total
  4. 100M network
  5. More than 300 machines out there; the number of affected stores is pending statistics

Solution 1: Disable EEE

1. Prerequisites​

1. Install the ethtool utility​

sudo apt install ethtool

2. Operation 1: Temporarily disable EEE on both Ethernet ports (takes effect immediately)​

sudo ethtool --set-eee end0 eee off
sudo ethtool --set-eee end1 eee off

Expected output: EEE status: disabled

3. Operation 2: Configure auto-disable EEE on boot (persists after power loss)​

1. Create a script that runs automatically when the NIC comes up​

cat > /etc/network/if-up.d/disable_all_eee <<'EOF'
#!/bin/sh
if [ "$IFACE" = "end0" ] || [ "$IFACE" = "end1" ]; then
    sleep 0.2
    ethtool --set-eee $IFACE eee off
fi
EOF

2. Add execute permission​

sudo chmod +x /etc/network/if-up.d/disable_all_eee

4. Operation 3: Rate-limit Ethernet broadcast packets to stop storm propagation​

1. Create a broadcast rate-limiting boot script​

cat > /etc/network/if-up.d/limit_broadcast <<'EOF'
#!/bin/sh
if [ "$IFACE" = "end0" ] || [ "$IFACE" = "end1" ]; then
    tc qdisc del dev $IFACE ingress 2>/dev/null
    tc qdisc add dev $IFACE handle ffff: ingress
    tc filter add dev $IFACE parent ffff: protocol all u32 \
    match ether dst ff:ff:ff:ff:ff:ff \
    action police rate 1mbit burst 10k conform-exceed drop
fi
EOF

2. Add execute permission​

sudo chmod +x /etc/network/if-up.d/limit_broadcast