Dell PowerEdge FX2 Dell PowerEdge FN I/O Aggregator Configuration Guide 9.6(0 - Page 255

Step Task Restriction: You can enable PFC on a maximum of two priority queues. Command Repeat this step to configure PFC and ETS traffic handling for each priority group, for example: priority-group 0 bandwidth 60 pfc off priority-group 1 bandwidth 20 pfc onpriority-group 2 bandwidth 20 pfc on priority-group 4 strict-priority pfc off 3 Specify the priority group ID number to handle priority-pgid VLAN traffic for each dot1p class-of-service: 0 dot1p0_group_num through 7. Leave a space between each priority group number. For example, priority-pgid 0 0 0 1 2 4 4 4 where dot1p priorities 0, 1, and 2 are mapped to priority group 0; dot1p priority 3 is mapped to priority group 1; dot1p priority 4 is mapped to priority group 2; dot1p priorities 5, 6, and 7 are mapped to priority group 4. dot1p1_group_num dot1p2_group_num dot1p3_group_num dot1p4_group_num dot1p5_group_num dot1p6_group_num dot1p7_group_num All priorities that map to the same egress queue must be in the same priority group. Command Mode DCB MAP Important Points to Remember • If you remove a dot1p priority-to-priority group mapping from a DCB map (no priority pgid command), the PFC and ETS parameters revert to their default values on the interfaces on which the DCB map is applied. By default, PFC is not applied on specific 802.1p priorities; ETS assigns equal bandwidth to each 802.1p priority. As a result, PFC and lossless port queues are disabled on 802.1p priorities, and all priorities are mapped to the same priority queue and equally share port bandwidth. • To change the ETS bandwidth allocation configured for a priority group in a DCB map, do not modify the existing DCB map configuration. Instead, create a new DCB map with the desired PFC and ETS settings, and apply the new map to the interfaces to override the previous DCB map settings. Then, delete the original dot1p priority-to-priority group mapping. • If you delete the dot1p priority-to-priority group mapping (no priority pgid command) before you apply the new DCB map, the default PFC and ETS parameters are applied on the interfaces. This change may create a DCB mismatch with peer DCB devices and interrupt the network operation. Applying a DCB Map on Server-facing Ethernet Ports You can apply a DCB map only on a physical Ethernet interface and can apply only one DCB map per interface. Step 1 Task Enter CONFIGURATION mode on a serverfacing port or port channel to apply a DCB map. Command interface {tengigabitEthernet slot/port } Command Mode CONFIGURATION NPIV Proxy Gateway 255