On Linux, you can use the “ifconfig” or “ip” command to check the number of dropped packets per interface.
You can use the following command to show the number of dropped packets for a specific interface, for example, “eth0”:
ifconfig eth0 | grep dropped
The output of the command will show the number of dropped packets in the “RX-DRP” and “TX-DRP” fields.
Alternatively, you can use the “ip” command instead of “ifconfig” to show the number of dropped packets, with the following command:
ip -s link show dev eth0 | grep dropped
You can also use the “netstat” command with the “-i” option to show the number of dropped packets for all interfaces, for example:
netstat -i
The output will show the number of dropped packets in the “drop” column.
You can also use the “sar” command along with the “-n DEV” option to display the number of dropped packets per interface. For example:
sar -n DEV 1
This command will display the number of dropped packets per interface in the “rxerr/s” and “txerr/s” fields, along with other network statistics.
Please note that these commands may not show the dropped packets in real-time, especially if you use the “sar” command, it may need some time to gather the data.
Additionally, if you want to track the dropped packets over time, you can use tools like “iftop” or “tcpdump” to monitor the network traffic and see if there’s any significant increase in dropped packets.