Dell C1048P Port Extender Networking Command-Line Reference Guide for the C900 - Page 606

Command History Version 9.9(0.0) 9.7(0.1) 9.7(0.0) 9.3(0.0) Description Introduced on the C9010. Introduced on the S3048-ON and S4048-ON. Introduced on the S6000-ON. Introduced on the S4810, S6000 platforms. Usage Information 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: • 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. 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 group. C9000 Series Syntax Parameters priority-group group-num {bandwidth percentage| strict-priority} pfc {on | off} priority-group group-num bandwidth percentage strict-priority pfc {on | off} 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, before bandwidth allocated to other priority groups is made available. Configure whether priority-based flow control is enabled (on) or disabled (off) for port traffic in the priority group. Defaults None Command Modes DCB MAP Data Center Bridging (DCB) 606