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 ETS and the application. This example uses port 0/21.

1. Enable DCB.

   SEFOS# configure terminal
   SEFOS(config)# interface extreme-ethernet 0/21
   SEFOS(config-if)# set dcb enable

2. Enable PFC.

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

3. Disable ETS and the application.

   SEFOS(config-if)# set dcb enhanced-transimission-selection 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 0/21 dcb mode
    
   Port                  : Ex0/21
   Show Type             : Admin State
   DCB Capable State     : on
   Priority Group        : auto
   Priority Flow Control : auto

5. View the DCB ETS parameters.

   SEFOS# show interfaces extreme-ethernet 0/21 dcb enhanced-transmission-selection
    
   Port             :      Ex0/21
   Show Type        :      Admin Config
   Feature          :      Enhanced Transmission Selection
   Enable           :      false
   Advertise        :      false
   Willing          :      false
   Priority        :      0       1       2       3       4       5       6       7
   Traffic Class  :      0       1       2       3       4       5       6       7
   Bandwidth       :     50      30      20      0       0       0       0       0
   Algorithm       :      2       2       2       2       2       2       2       2
   Max Traffic Class:  8

6. View the PFC parameters.

   SEFOS# show interfaces extreme-ethernet 0/21 dcb priority-flow-control
    
   Port             :      Ex0/21
   Show Type        :      Admin Config
   Feature          :      Priority Flow Control
   Enable           :      true
   Advertise        :      true
   Willing          :      false
   Priority Mask    :     0      0      0      0      1      0      0     0
   Max Traffic Class:   8

7. View the application parameters.

   SEFOS# show interfaces extreme-ethernet 0/21 dcb application-etype-fcoe
   Port             :      Ex0/21
   Show Type        :      Admin Config
   Feature          :      Application FCoE
   Enable           :      false
   Advertise        :      false
   Priority Map     :     0      0      0      0      1      0      0     0