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| Sun Ethernet Fabric Operating System ### DCB Administration Guide

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## Enable and Disable a Specific DCB Feature

You can enable and disable a specific DCB feature after DCB has been globally enabled. For example, when exchanging a DCBX protocol with its peer, you might want to inform its peer that a DCB-specific feature has been enabled or disabled.

The following example enables the PFC feature and disables PG and the application. This example uses port 0/2.

1. Enable DCB.

       SEFOS# configure terminal
       SEFOS(config)# interface extreme-ethernet 0/2
       SEFOS(config-if)# set dcb enable

2. Enable PFC.

       SEFOS(config-if)# set dcb priority-flow-control enable

3. Disable PG and the application.

       SEFOS(config-if)# set dcb priority-group disable
       SEFOS(config-if)# set dcb application-etype-fcoe disable
       SEFOS(config-if)# end

4. View the DCB state and feature mode.

       SEFOS# show interfaces extreme-ethernet 0/2 dcb mode

       Port                  : Ex0/2
       Show Type             : Admin State
       DCB Capable State     : on
       Priority Group        : auto
       Priority Flow Control : auto

5. View the DCB PG parameters.

       SEFOS# show interfaces extreme-ethernet 0/2 dcb priority-group

       Port             :      Ex0/2
       Show Type        :      Admin Config
       Feature          :      Priority Group
       Enable           :      false
       Advertise        :      true
       Willing          :      false
       Group Bandwidth  :      50%     30%     20%     0%      0%      0%      0%      0%
       Priority Group ID:      0       0       0       1       2       2       2       15
       Max Traffic Class:      8

6. View the PFC parameters.

       SEFOS# show interfaces extreme-ethernet 0/2 dcb priority-flow-control
       Port             :      Ex0/2
       Show Type        :      Admin Config
       Feature          :      Priority Flow Control
       Enable           :      true
       Advertise        :      true
       Willing          :      false
       Priority Mask    :      0       0       0       1       0       0       0       0
       Max Traffic Class:      8

7. View the application parameters.

       SEFOS# show interfaces extreme-ethernet 0/2 dcb application-etype-fcoe
       Port             :      Ex0/2
       Show Type        :      Admin Config
       Feature          :      Application FCoE
       Enable           :      false
       Advertise        :      true
       Willing          :      false
       Priority Map     :      0       0       0       1       0       0       0       0

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