# Adding classifiers

Use this procedure to add classifiers.

## Procedure steps

1. From the navigation tree, double-click QoS.

2. From the QoS tree, double-click QoS Rules.

3. Select the Classifier tab.

4. Click Insert.

   The Insert Classifier screen opens.

5. Type the name of the classifier element.

6. Select the IP Classifier Element, L2 Classifier Element, or System Classifier Element.

7. Click Insert.

   Note

   You create a classifier by using the following combination:

   - one system classifier element

   - one L2 classifier element

   - one IP classifier element

   - one IP classifier, one system classifier

   - one L2 classifier, one system classifier

   - one L2 classifier, one IP classifier

   - one IP, one L2, plus one system classifier

   Entries with the same SetId belong to the same classifier. Click on the SetId column header to sort the table by SetId value; this makes it very easy to see which entries have the same SetId value.

   Limitations on classifier creation are:

   - when creating a classifier with L2 and IP elements the L2 element should contain Ethertype 0x800.

   - when creating a classifier with a system element and IP element, the pattern data on the system element must contain the Ethertype value.