tc:tldr:98987

This command is used to add a Traffic Control (tc) queuing discipline (qdisc) to the network device (eth0) with specific parameters.

• tc: It is a command line tool used to configure and monitor Traffic Control rules in Linux.
• qdisc: It stands for queuing discipline, which is a mechanism to control the flow of network packets.
• add: This option is used to add a new queuing discipline to the specified network device.
• dev eth0: It specifies the network device to which the queuing discipline will be added (eth0 in this case).
• root: It indicates that the queuing discipline will be the root qdisc, which means it will be the top-level queuing discipline for the network device.
• tbf: It stands for Token Bucket Filter, which is a queuing discipline that uses tokens to control the rate of outgoing packets.
• rate ${max_bandwidth_mb}mbit: It sets the maximum allowed bandwidth for the network device. The ${max_bandwidth_mb} variable should be replaced with the desired maximum bandwidth in megabits per second.
• burst ${max_burst_rate_kb}kbit: It sets the maximum burst rate for the network device. The ${max_burst_rate_kb} variable should be replaced with the desired maximum burst rate in kilobits.
• latency ${max_latency_before_drop_ms}ms: It sets the maximum latency threshold before dropping packets. The ${max_latency_before_drop_ms} variable should be replaced with the desired maximum latency in milliseconds.