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diff --git a/health/guides/wifi/wifi_outbound_packets_dropped_ratio.md b/health/guides/wifi/wifi_outbound_packets_dropped_ratio.md new file mode 100644 index 000000000..8441885df --- /dev/null +++ b/health/guides/wifi/wifi_outbound_packets_dropped_ratio.md @@ -0,0 +1,54 @@ +### Understand the alert + +The `wifi_outbound_packets_dropped_ratio` alert indicates that a significant number of packets were dropped on the way to transmission over the last 10 minutes. This could be due to a lack of resources or other issues with the network interface. + +### What does dropped packets mean? + +Dropped packets refer to data packets that are discarded by a network interface instead of being transmitted through the network. This can occur for various reasons such as hardware failures, lack of resources (e.g., memory, processing power), or network congestion. + +### Troubleshoot the alert + +1. Check interface statistics + +Use the `ifconfig` command to view information about your network interfaces, including their packet drop rates. Look for the dropped packets count in the TX (transmit) section. + +```bash +ifconfig <interface_name> +``` + +Replace `<interface_name>` with the name of the network interface you are investigating, such as `wlan0` for a wireless interface. + +2. Check system logs + +System logs can provide valuable information about any potential issues. Check the logs for any errors or warnings related to the network interface or driver. + +For example, use `dmesg` command to display kernel messages: + +```bash +dmesg | grep -i "<interface_name>" +``` + +Replace `<interface_name>` with the name of the network interface you are investigating. + +3. Check for hardware issues + +Inspect the network interface for any signs of hardware failure or malfunction. This may include damaged cables, loose connections, or issues with other networking equipment (e.g. switches, routers). + +4. Monitor network congestion + +High packet drop rates can be caused by network congestion. Monitor network usage and performance using tools such as `iftop`, `nload`, or `vnstat`. Identify and address any traffic bottlenecks or excessive usage. + +5. Update network drivers + +Outdated or faulty network drivers may cause packet drop issues. Check for driver updates and install any available updates following the manufacturer's instructions. + +6. Optimize network settings + +You can adjust network settings, like buffers or queues, to mitigate dropped packets. Consult your operating system or network device documentation for specific recommendations on adjusting these settings. + +### Useful resources + +1. [ifconfig command in Linux](https://www.geeksforgeeks.org/ifconfig-command-in-linux-with-examples/) +2. [How to monitor network usage with iftop](https://www.binarytides.com/monitor-network-usage-with-iftop/) +3. [nload – Monitor Network Traffic and Bandwidth Usage in Real Time](https://www.tecmint.com/nload-monitor-linux-network-traffic-bandwidth-usage/) +4. [VNstat – A Network Traffic Monitor](https://www.tecmint.com/vnstat-monitor-network-traffic-in-linux/)
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