Configure the Mode for the DCB Feature

In normal operation, the DCB feature is in automatic mode. Whenever applicable, the hardware configuration is set after a feature is exchanged with its peer and the feature attributes are compatible with its peer. In some cases, force mode might be needed to set the hardware configuration, regardless of its peer configuration, without waiting for DCBX TLV to be exchanged.

1. Set the ETS feature to auto mode.

   SEFOS# configure terminal
   SEFOS(config)# interface extreme-ethernet 0/21
   SEFOS(config-if)# set dcb enhanced-transmission-selection mode auto
   SEFOS(config-if)# set dcb priority-flow-control mode auto
   SEFOS(config-if)# end

2. View the DCB mode.

   SEFOS# show interfaces extreme-ethernet 0/21 dcb mode
    
   Port                  : Ex0/21
   Show Type             : Admin State
   DCB Capable State     : on
   Priority Group (ETS)  :  auto
   Priority Flow Control : auto

3. Set the ETS feature to force mode.

   SEFOS# configure terminal
   SEFOS(config)# interface extreme-ethernet 0/21
   SEFOS(config-if)# set dcb enhanced-transmission-selection mode on
   SEFOS(config-if)# set dcb priority-flow-control mode on
   SEFOS(config-if)# end

4. View the interface mode after setting it to force mode.

   SEFOS# show interfaces extreme-ethernet 0/21 dcb mode
    
   Port                  : Ex0/21
   Show Type             : Admin State
   DCB Capable State     : on
   Priority Group (ETS)  : force
   Priority Flow Control : force