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Traffic Control HOWTO:
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10. Diagram

10.1. General diagram

Below is a general diagram of the relationships of the components of a classful queuing discipline (HTB pictured). A larger version of the diagram is available.

Example 11. An example HTB tcng configuration


/*
 *
 *  possible mock up of diagram shown at
 *  http://linux-ip.net/traffic-control/htb-class.png
 *
 */

$m_web = trTCM (
                 cir 512  kbps,  /* commited information rate */
                 cbs 10   kB,    /* burst for CIR */
                 pir 1024 kbps,  /* peak information rate */
                 pbs 10   kB     /* burst for PIR */
               ) ;

dev eth0 {
    egress {

        class ( <$web> )  if tcp_dport == PORT_HTTP &&  __trTCM_green( $m_web );
        class ( <$bulk> ) if tcp_dport == PORT_HTTP && __trTCM_yellow( $m_web );
        drop              if                              __trTCM_red( $m_web );
        class ( <$bulk> ) if tcp_dport == PORT_SSH ;

        htb () {  /* root qdisc */

            class ( rate 1544kbps, ceil 1544kbps ) {  /* root class */

                $web  = class ( rate 512kbps, ceil  512kbps ) { sfq ; } ;
                $bulk = class ( rate 512kbps, ceil 1544kbps ) { sfq ; } ;

            }
        }
    }
}

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