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Defining CoS Value Aliases

A code-point alias assigns a name to a pattern of code-point bits. You can use this name, instead of the bit pattern, when you configure other CoS components such as classifiers, drop-profile maps, and rewrite rules. For more information about code point aliases, see .

To define CoS value aliases using the J-Web configuration editor:

  1. Select Configure>Class of Service>Value Aliases. The Code Point Alias Configuration summary page appears.
  2. Fill in the options as shown in Table 133.
  3. Click one of the following buttons:

Table 133: CoS Value Aliases Configuration Options

Field

Function

Action

Code Point Alias Summary

Alias name

Displays the name given to CoS values—for example, af11 or be.

None

Alias type

Displays the code point type. The following type of code points are supported:

  • DSCP—Defines aliases for DiffServ code point (DSCP) IPv4 values.

    You can refer to these aliases when you configure classes and define classifiers.

  • DSCP-IPv6—Defines aliases for DSCP IPv6 values.

    You can refer to these aliases when you configure classes and define classifiers.

  • EXP—Defines aliases for MPLS experimental (EXP) bits.

    You can map MPLS EXP bits to the device forwarding classes.

  • inet-precedence—Defines 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.

None

CoS value bits

Displays the CoS value for which an alias is defined.

Changing this value alters the behavior of all classifiers that refer to this alias.

None

Add

Opens a page that allows you to create a new code point alias.

Click Add to create a new code point alias.

Edit

Opens a page that allows you to edit a selected code point alias.

To edit an existing code point alias, select the alias in the summary page, and click Edit.

Delete

Deletes a specified code point alias.

To delete an existing code point alias, select the alias and click Delete.

Add Code Point Alias/Edit Code Point Alias

Code point name

Name given to CoS values—for example, af11 or be.

Specify a name for the CoS point alias.

Note: If you create a new alias with the same name that is available in the default list, then the default alias name is overwritten with the user-configured name.

Code point type

Code point type: DSCP, DSCP-IPv6, EXP, or inet-precedence

Select the alias value you want to configure: DSCP, DSCP-IPv6, EXP, or inet-precedence.

Code point value bits

Specifies a CoS value for which an alias is defined.

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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