Configure DCB Attributes

You can set PG and PFC feature attributes. This example configures a total of three groups with bandwidths of 40%, 20%, and 40%.

1. Configure PG with different priority grouping and bandwidth.

   SEFOS# configure terminal
   SEFOS(config)# interface extreme-ethernet 0/2
   SEFOS(config-if)# set dcb priority-group 0 0 0 1 2 2 2 2 bandwidth 40 20 40 0 0 0 0 0
   SEFOS(config-if)# end

2. View the configuration to verify that the PG feature is enabled and advertised.

   If the feature is not enabled, it will not be in operating mode.

   SEFOS# show int ex 0/2 dcb priority-group detail
    
   Port             :      Ex0/2
   Show Type        :      Admin Config
   Feature          :      Priority Group
   Enable           :      true
   Advertise        :      true
   Willing          :      false
   Group Bandwidth  :      40%     20%     40%     0%      0%      0%      0%      0%
   Priority Group ID:      0       0       0       1       2       2       2       2
   Max Traffic Class:      8
    
   Show Type        :      Oper Config
   Feature          :      Priority Group
   Oper Version     :      0
   Max Version      :      0
   Errors           :      0x0 - none
   Operational Mode :      true
   Syncd with Peer  :      true
   Group Bandwidth  :      40%     20%     40%     0%      0%      0%      0%      0%
   Priority Group ID:      0       0       0       1       2       2       2       2
   Max Traffic Class:      8
    
   Show Type        :      Peer Config
   Feature          :      Priority Group
   Local Interface  :      Ex0/2
   Status           :      successful
   Enable           :      true
   Willing          :      false
   Group Bandwidth  :      50%     50%     0%      0%      0%      0%      0%      0%
   Priority Group ID:      0       0       0       1       0       0       0       0
   Max Traffic Class:      2
    
   ------------------------------------------------------------
   Total Entries Displayed : 1

   This configuration has the following values:

   • Group 0 - priority members (0, 1, 2), bandwidth 40% (share bandwidth among priority 0, 1, 2)

   • Group 1 - priority member (3), bandwidth 20% (priority 3)

   • Group 2 - priority members (4, 5, 6), bandwidth 40% (share bandwidth among priority 4, 5, 6)

   • Group 3 to 7 - priority members (none)

   The output shows the group bandwidth of each group. For groups that have no priorities assigned to them, the bandwidth shows 0%, as follows:

   Group 0 Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7

   40% 20% 40% 0% 0% 0% 0% 0%

   The output also shows the priority group ID assigned to a priority (ID shown from 0 - 2 in this example).

3. Set the PFC priority with the following commands when the PFC priority set does not match what the peer has configured, then set the priority to match the peer's priority set.

   SEFOS# configure terminal
   SEFOS(config)# interface extreme-ethernet 0/2
   SEFOS(config-if)# set dcb priority-flow-control vlan-priority 0 0 0 1 1 0 0 0
   SEFOS(config-if)# end
   SEFOS# show interfaces extreme-ethernet 0/2 dcb priority-flow-control detail
    
   Port             :      Ex0/2
   Show Type        :      Admin Config
   Feature          :      Priority Flow Control
   Enable           :      true
   Advertise        :      true
   Willing          :      false
   Priority Mask    :      0       0       0       1       1       0       0       0
   Max Traffic Class:      8
    
   Show Type        :      Oper Config
   Feature          :      Priority Flow Control
   Oper Version     :      0
   Max Version      :      0
   Errors           :      0x2 - config mismatch with peer
   Operational Mode :      false
   Syncd with Peer  :      true
   Priority Mask    :      0       0       0       1       1       0       0       0
   Max Traffic Class:      8
    
   Show Type        :      Peer Config
   Feature          :      Priority Flow Control
   Local Interface  :      Ex0/2
   Status           :      successful
   Enable           :      true
   Willing          :      false
   Priority Mask    :      0       0       0       1       0       0       0       0
   Max Traffic Class:      8
   ------------------------------------------------------------
   Total Entries Displayed : 1

4. Set the PFC priority the same as the PFC priority of the peer.

   SEFOS# configure terminal
   SEFOS(config)# interface extreme-ethernet 0/2
   SEFOS(config-if)# set dcb priority-flow-control vlan-priority 0 0 0 1 0 0 0 0
   SEFOS(config-if)# end
   SEFOS# show interfaces extreme-ethernet 0/2 dcb priority-flow-control detail
    
   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
    
   Show Type        :      Oper Config
   Feature          :      Priority Flow Control
   Oper Version     :      0
   Max Version      :      0
   Errors           :      0x0 - none
   Operational Mode :      true
   Syncd with Peer  :      true
   Priority Mask    :      0       0       0       1       0       0       0       0
   Max Traffic Class:      8
    
   Show Type        :      Peer Config
   Feature          :      Priority Flow Control
   Local Interface  :      Ex0/2
   Status           :      successful
   Enable           :      true
   Willing          :      false
   Priority Mask    :      0       0       0       1       0       0       0       0
   Max Traffic Class:      8
   ------------------------------------------------------------
   Total Entries Displayed : 1