Pfc Mode On - Dell S4810 Reference Manual

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Version 9.3(0.0)

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.

pfc mode on

Enable the PFC configuration on the port so that the priorities are included in DCBX negotiation with peer

PFC devices.

To disable the PFC configuration, use the no pfc mode on command.

PFC mode is on.

Version 9.3(0.0)

By applying a DCB input policy with PFC enabled, you enable PFC operation on

ingress port traffic. To achieve complete lossless handling of traffic, also enable

PFC on all DCB egress ports or configure the dot1p priority-queue assignment of

PFC priorities to lossless queues (refer to pfc no-drop queues).

Data Center Bridging (DCB)

Introduced on the S4810, S6000 platforms.

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.

Introduced on the MXL 10/40GbE Switch with the FC Flex IO