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#! /bin/sh
TC=/home/root/tc
IP=/home/root/ip
DEVICE=eth1
BANDWIDTH="bandwidth 10Mbit"
# Attach CBQ on $DEVICE. It will have handle 1:.
# $BANDWIDTH is real $DEVICE bandwidth (10Mbit).
# avpkt is average packet size.
# mpu is minimal packet size.
$TC qdisc add dev $DEVICE root handle 1: cbq \
$BANDWIDTH avpkt 1000 mpu 64
# Create root class with classid 1:1. This step is not necessary.
# bandwidth is the same as on CBQ itself.
# rate == all the bandwidth
# allot is MTU + MAC header
# maxburst measure allowed class burstiness (please,read S.Floyd and VJ papers)
# est 1sec 8sec means, that kernel will evaluate average rate
# on this class with period 1sec and time constant 8sec.
# This rate is viewed with "tc -s class ls dev $DEVICE"
$TC class add dev $DEVICE parent 1:0 classid :1 est 1sec 8sec cbq \
$BANDWIDTH rate 10Mbit allot 1514 maxburst 50 avpkt 1000
# Bulk.
# New parameters are:
# weight, which is set to be proportional to
# "rate". It is not necessary, weight=1 will work as well.
# defmap and split say that best effort ttraffic, not classfied
# by another means will fall to this class.
$TC class add dev $DEVICE parent 1:1 classid :2 est 1sec 8sec cbq \
$BANDWIDTH rate 4Mbit allot 1514 weight 500Kbit \
prio 6 maxburst 50 avpkt 1000 split 1:0 defmap ff3d
# OPTIONAL.
# Attach "sfq" qdisc to this class, quantum is MTU, perturb
# gives period of hash function perturbation in seconds.
#
$TC qdisc add dev $DEVICE parent 1:2 sfq quantum 1514b perturb 15
# Interactive-burst class
$TC class add dev $DEVICE parent 1:1 classid :3 est 2sec 16sec cbq \
$BANDWIDTH rate 1Mbit allot 1514 weight 100Kbit \
prio 2 maxburst 100 avpkt 1000 split 1:0 defmap c0
$TC qdisc add dev $DEVICE parent 1:3 sfq quantum 1514b perturb 15
# Background.
$TC class add dev $DEVICE parent 1:1 classid :4 est 1sec 8sec cbq \
$BANDWIDTH rate 100Kbit allot 1514 weight 10Mbit \
prio 7 maxburst 10 avpkt 1000 split 1:0 defmap 2
$TC qdisc add dev $DEVICE parent 1:4 sfq quantum 1514b perturb 15
# Realtime class for RSVP
$TC class add dev $DEVICE parent 1:1 classid 1:7FFE cbq \
rate 5Mbit $BANDWIDTH allot 1514b avpkt 1000 \
maxburst 20
# Reclassified realtime traffic
#
# New element: split is not 1:0, but 1:7FFE. It means,
# that only real-time packets, which violated policing filters
# or exceeded reshaping buffers will fall to it.
$TC class add dev $DEVICE parent 1:7FFE classid 1:7FFF est 4sec 32sec cbq \
rate 1Mbit $BANDWIDTH allot 1514b avpkt 1000 weight 10Kbit \
prio 6 maxburst 10 split 1:7FFE defmap ffff