Using Tos, Dscp Or Precedence - Speedtouch IPQoS Configuration Manual

Chapter 5
Packet Classification and Labelling

5.2.2 Using TOS, DSCP or Precedence

Introduction
TOSmarking
Precedence
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In this section we will explain the parameters that need to be set to enable QoS
throughout the entire network. This means that these values are only of significance
for outgoing fraffic. The tables below describe the values used when configuring
IPQoS by setting the TOS byte, using DSCP or by setting the Precedence bits.
!
type of of IPQoS can be used at the time.
Only one
When using TOS a very fine definition of the Quality of Service can be made. This is
only of use when the whole network supports QoS by TOS.
TOSmarking values
disable
enable
TOS
TOS values
1..255
When using Precedence the QoS definition is narrowed down to 8 values
Precedence values
routine
priority
immediate
flash
flash-override
CRITIC-ECP
internetwork-control
network-control
number 0..7
Discription
Disables the TOS marking.
Enables the TOS marking.
Description
Sets the TOS bits in the IP header to the coresponding
value.
Description
will set the precedence bits to 000.
priority)
will set the precedence bits to 001.
will set the precedence bits to 010.
will set the precedence bits to 011.
will set the precedence bits to 100.
will set the precedence bits to 101.
will set the precedence bits to 110.
will set the precedence bits to 111.
0..7.
(lowest
(highest priority)
E-NIT-CTC-20041213-0013 v0.5