Administrator Guide

Version Description
9.3(0.0) Introduced on the S4810 and S6000 platforms.
9.3(0.0) Introduced on the FC Flex IO module installed in the MXL 10/40GbE Switch.
Usage Information
Use the show qos dcb-map command to display the enhanced transmission selection (ETS) and priority-based
flow control (PFC) parameters used to configure server-facing Ethernet ports. S5000 Ethernet ports are DCBx-
enabled by default.
The following table describes the show qos dcb-map output shown in the example below.
Field Description
State Complete: All mandatory DCB parameters are correctly configured. In progress: The DCB
map configuration is not complete. Some mandatory parameters are not configured.
PFC Mode PFC configuration in DCB map: On (enabled) or Off.
PG Priority group configured in the DCB map.
TSA Transmission scheduling algorithm used by the priority group: Enhanced Transmission
Selection (ETS).
BW Percentage of bandwidth allocated to the priority group.
PFC PFC setting for the priority group: On (enabled) or Off.
Priorities 802.1p priorities configured in the priority group.
Example
Dell# show qos dcb-map dcbmap2
State :Complete
PfcMode:ON
--------------------
PG:0 TSA:ETS BW:50 PFC:OFF
Priorities:0 1 2 4 5 6 7
PG:1 TSA:ETS BW:50 PFC:ON
Priorities:3
dcb pfc-shared-buffer-size
Configure the maximum amount of shared buffer size for PFC packets in kilobytes.
Syntax
dcb pfc-shared—buffer—size buffer-size
Parameters
buffer-size Enter a number in the range of 0 to 7787.
Default The default is 832KB.
Command Modes CONFIGURATION mode
Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC
Networking OS Command Line Reference Guide.
Version Description
9.11(2.0P0) The default value is changed to 1040 KB for the Z9100–ON and S6100–ON.
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S6100.
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0) Introduced on the S4048-ON.
506 Data Center Bridging (DCB)