Priority-Group Bandwidth Pfc - Dell Z9500 Reference Manual

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PFC and ETS settings are not pre-configured on Ethernet ports. You must use the

dcb-map command to configure different groups of 802.1p priorities with PFC and

ETS settings.

Using the priority-pgid command, you assign each 802.1p priority to one

priority group. A priority group consists of 802.1p priority values that are grouped

together for similar bandwidth allocation and scheduling, and that share latency

and loss requirements. All 802.1p priorities mapped to the same queue must be in

the same priority group. For example, the priority-pgid 0 0 0 1 2 4 4 4

command creates the following groups of 802.1p priority traffic:

To remove a priority-pgid configuration from a DCB map, enter the no

priority-pgid command.

priority-group bandwidth pfc

Configure the ETS bandwidth allocation and PFC mode used to manage port traffic in an 802.1p priority

priority-group group-num {bandwidth percentage| strict-

priority} pfc {on | off}[no] priority-group <x> {bandwidth

<0-100> | strict-priority } [ [committed | peak ] | [peak |

committed] {<0-40000>} [<0-4000>]] pfc {on|off}

priority-group

strict-priority

Introduced on the Z9500.

Priority group 0 contains traffic with dot1p priorities 0, 1, and 2.

Priority group 1 contains traffic with dot1p priority 3.

Priority group 2 contains traffic with dot1p priority 4.

Priority group 4 contains traffic with dot1p priority 5, 6, and 7.

Enter the keyword priority-group followed by the

number of an 802.1p priority group. Use the priority-

pgid command to create the priority groups in a DCB map.

Enter the keyword bandwidth followed by a bandwidth

percentage allocated to the priority group. The range of valid

values is 1 to 100. The sum of all allocated bandwidth

percentages in priority groups in a DCB map must be 100%.

Configure the priority-group traffic to be handled with strict

priority scheduling. Strict-priority traffic is serviced first,

Data Center Bridging (DCB)