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Defining Classifiers

Classifiers examine the CoS value or alias of an incoming packet and assign it a level of service by setting its forwarding class and loss priority. For more information about classifiers, see the .

To define classifiers using the J-Web configuration editor:

  1. Select Configure>Class of Service>Classifiers.

    The Classifier Configuration summary page appears.

  2. Fill in the options as shown in Table 146.
  3. Click one of the following buttons:

Table 146: Classifiers Configuration Options

Field

Function

Action

Classifier Configuration Summary

Classifier name

Displays the names of classifiers.

None.

Classifier type

Displays the classifier type. The following type of classifiers are supported:

  • J Series (J6350), SRX210, SRX240, SRX650:
    • dscp—DiffServ code point classifier for IPv4
    • dscp-ipv6—DiffServ code point classifier for IPv6
    • exp—MPLS experimental (EXP) bits classifier
    • ieee-802.1—IEEE-802.1 classifier
    • inet-precedence—IPv4 precedence classifier
  • SRX3400, SRX3600, SRX5600, SRX5800:
    • dscp—DiffServ code point classifier for IPv4
    • dscp-ipv6—DiffServ code point classifier for IPv6
    • ieee-802.1—IEEE-802.1 classifier
    • inet-precedence—IPv4 precedence classifier

None.

Details of Classifiers

Incoming code point

Displays CoS values and aliases to which forwarding class and loss priority are mapped.

None.

Forwarding class name

Displays forwarding class names that are assigned to specific CoS values and aliases of a classifier.

None.

Loss priority

Displays loss priorities that are assigned to specific CoS values and aliases of a classifier.

None.

Add

Opens a page that allows you to define classifiers.

To add a classifier, click Add.

Edit

Opens a page that allows you to edit a selected classifier.

To edit a classifier, select a classifier in the summary page and click Edit.

Delete

Deletes a specified classifier.

To delete a classifier, select the classifier and click Delete.

Add Classifier

Classifier name

Specifies the name for a classifier.

To name a classifier, type the name—for example, ba-classifier.

Classifier type

Specifies a classifier type.

Select a classifier type from the drop-down list—for example, dscp, ieee-802.1, or inet-precedence.

Add

Opens a page that allows you to assign a forwarding class and loss priority to the specified CoS value and alias.

A classifier examines the incoming packet's header for the specified CoS value and alias and assigns it the forwarding class and loss priority that you have defined.

To assign a code point, forwarding class, and loss priority to a specific CoS classifier, click Add.

Add Code Point Mapping/Edit Code Point Mapping

Code point

Specifies the CoS value in bits and the alias of a classifier.

To specify a CoS value and alias, either select preconfigured ones from the list or type new ones.

Forwarding class

Assigns the forwarding class to the specified CoS value and alias.

To assign a forwarding class, select either one of the following default forwarding classes or one that you have configured:

  • expedited-forwarding—Provides low loss, low delay, low jitter, assured bandwidth, and end-to-end service. Packets can be forwarded out of sequence or dropped.
  • best-effort—Provides no special CoS handling of packets. Typically, RED drop profile is aggressive and no loss priority is defined.
  • assured-forwarding—Provides high assurance for packets within the specified service profile. Excess packets are dropped.
  • network-control—Packets can be delayed but not dropped.

Loss priority

Assigns a loss priority to the specified CoS value and alias.

To assign a loss priority, select one:

  • high—Packet has a high loss priority.
  • low—Packet has a low loss priority.

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