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Chapter 6
Meters, queues and IPQoS
E-NIT-CTC-20041213-0013 v0.5
71
Dscp
Precedence
Classification
Class
dscp value Description
ef, af11, af12, af13,
af21, af22, af23, af31,
af32, af33, af41, af42,
af43, cs0, cs1, cs2,
cs3, cs4, cs5, cs6, cs7
or a number
The diffserv code point value to be set.
precedence value Description
routine will set the precedence bits to 000. (lowest
priority)
priority will set the precedence bits to 001.
immediate will set the precedence bits to 010.
flash will set the precedence bits to 011.
flash-override will set the precedence bits to 100.
CRITIC-ECP will set the precedence bits to 101.
internetwork-control will set the precedence bits to 110.
network-control will set the precedence bits to 111. (highest priority)
number 0..7 0..7.
classification value Description
ignore No changes are made to the classification.
overwrite The internal priority will be overwritten, no matter
what is the value is.
decrease The internal priority will only be overwritten if the
value defined is lower than the value upon arrival.
offset This will lower the priority setting with a relative
offset. The offset value is defined in the class value.
class value description
number (0..15) The class or offset used for classification.