Reply To: Guaranteed Bandwidth

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There is no concept of “shaping” on incoming traffic.

@Linux Advanced Routing and Traffic Control wrote:

A qdisc may, with the help of a classifier, decide that some packets need to go out earlier than others. This process is called Scheduling, and is performed for example by the pfifo_fast qdisc mentioned earlier. Scheduling is also called ‘reordering’, but this is confusing.

The process of delaying packets before they go out to make traffic confirm to a configured maximum rate. Shaping is performed on egress. Colloquially, dropping packets to slow traffic down is also often called Shaping.

Delaying or dropping packets in order to make traffic stay below a configured bandwidth. In Linux, policing can only drop a packet and not delay it – there is no ‘ingress queue’.