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Defining CoS Value Aliases

Figure 35 shows the initial Quick Configuration page for defining aliases for CoS values, and Table 99 describes the related fields. By defining aliases you can assign meaningful names to a particular set of bit values and refer to them when configuring CoS components. For more information about CoS values and aliases, see the JUNOS Class of Service Configuration Guide.

Figure 35: CoS Value Aliases Quick Configuration Page

CoS Value Aliases Quick
Configuration Page

Table 99: CoS Value Aliases Quick Configuration Pages Summary

Field	Function	Your Action
CoS Value Alias Summary
DSCP	Allows you to define aliases for DiffServ code point (DSCP) IPv4 values. You can refer to these aliases when you configure classes and define classifiers.	To define an alias for a DSCP value, click DSCP.
DSCP IPv6	Allows you to define aliases for DSCP IPv6 values. You can refer to these aliases when you configure classes and define classifiers.	To define an alias for a DSCP IPv6 value, click DSCP IPv6.
MPLS EXP	Allows you to define aliases for MPLS experimental (EXP) bits. You can map MPLS EXP bits to the Services Router forwarding classes.	To define an alias for a set of MPLS EXP bits, click MPLS EXP.
IPv4 Precedence	Allows you to define aliases for IPv4 precedence values. Precedence values are modified in the IPv4 type-of-service (TOS) field and mapped to values that correspond to levels of service.	To define an alias for an IPv4 precedence value, click IPv4 Precedence.
Alias Name	Displays names given to CoS values—for example, af11 or be.	None.
Default Value	Displays the default values mapped to standard aliases. For example, ef (expedited forwarding) is a standard alias for DSCP bits 101110. You cannot delete default values. The check box next to these values is unavailable.	None.
Configured Value	Displays the CoS values that you have assigned to specific aliases. You can delete a configured alias.	None.
Add	Opens a page that allows you to define CoS value aliases.	To add a CoS value alias, click Add.
Delete	Allows you to delete a configured CoS value alias. You cannot delete a default alias.	To delete a CoS value alias, select the check box next to it and click Delete.
Add a CoS Value Alias
CoS Value Alias	Assigns a name to a CoS value. A CoS value can be of different types—DSCP, DSCP IPv6, IP precedence, or MPLS EXP.	To define an alias for a CoS value, type a name—for example, my1.
CoS Value Alias Bits	Specifies the CoS value for which an alias is defined. Changing this value alters the behavior of all classifiers that refer to this alias.	To specify a CoS value, type it in an appropriate format: For DSCP and DSCP IPv6 CoS values, use the format xxxxxx, where x is 1 or 0—for example, 101110. For MPLS EXP and IP precedence CoS values, use the format xxx, where x is 1 or 0—for example, 111.

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