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Home > Success Center > VoIP & Network Quality Manager (VNQM) > VNQM 4.4 Administrator Guide > VoIP and Network Quality Manager settings > Setting traffic precedence

Setting traffic precedence

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In SolarWinds VoIP and Network Quality Manager you can set the precedence, or packet priority, of your network traffic. Setting precedence levels for your traffic enables you to better ensure high quality of service on your network. SolarWinds VoIP and Network Quality Manager employs a decimal Type of Service value specified on the SolarWinds VoIP and Network Quality Manager Settings page. For more information, see Configuring VNQM settings.

The Type of Service value used by SolarWinds VoIP and Network Quality Manager corresponds to the per hop behavior (PHB) and the Differentiated Service Code Point (DSCP) values as shown in the following table.

  TOS Byte (IPv4) / Traffic Class (IPv6)  
DSCP

Flow Control

IP Precedence  
 

ToS Value (decimal)

DSCP Value (decimal)

b7

b6

b5

b4

b3

b2

b1

b0

PHB

Drop Probability

Best Effort

0

0

0

0

0

0

0

0

0

0

Default

 

 

 

 

 

 

 

 

Class Selector
(Backward Compatibility
with IP Precedence)

32

8

0

0

0

0

0

0

0

0

CS1

64

16

0

1

1

0

0

0

0

0

CS2

96

24

0

1

0

0

0

0

0

0

CS3

128

32

1

0

1

0

0

0

0

0

CS4

160

40

1

0

0

0

0

0

0

0

CS5

192

48

1

1

1

0

0

0

0

0

CS6

224

56

1

1

0

0

0

0

0

0

CS7

Assured Forwarding

40

10

0

0

1

0

1

0

0

0

AF11

Low

48

12

0

0

1

1

0

0

0

0

AF12

Medium

56

14

0

0

1

1

1

0

0

0

AF13

High

72

18

0

1

0

0

1

0

0

0

AF21

Low

80

20

0

1

0

1

0

0

0

0

AF22

Medium

88

22

0

1

0

1

1

0

0

0

AF23

High

104

26

0

1

1

0

1

0

0

0

AF31

Low

112

28

0

1

1

1

0

0

0

0

AF32

Medium

120

30

0

1

1

1

1

0

0

0

AF33

High

136

34

1

0

0

0

1

0

0

0

AF41

Low

144

36

1

0

0

1

0

0

0

0

AF42

Medium

152

38

1

0

0

1

1

0

0

0

AF43

High

Expedited Forwarding

184

46

1

0

1

1

1

0

0

0

EF

 


 
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