Users Guide

Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.7(0.0) Introduced on the S6000-ON.
9.3(0.0) Introduced on the S4810 and S6000 platforms.
Usage Information The dcb-map stack-unit all stack-ports all command overwrites any previous DCB maps applied
to stack ports.
dcb pfc-shared-buffer-size
Configure the maximum amount of shared buffer size for PFC packets in kilobytes.
Syntax
dcb pfc-shared—buffer—size KB
Parameters
KB Enter a number in the range of 0 to7787.
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 Networking
OS Command Line Reference Guide.
Version Description
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0) Introduced on the S4048-ON.
9.7(0.0) Introduced on the S6000-ON and Z9500.
9.6(0.0) Introduced on the S5000.
9.3(0.0) Introduced on the S4810, S4820T, and S6000 platforms.
Usage Information Configure the maximum shared buffer available for PFC traffic. You can choose to increase or decrease the
shared buffer that is allocated in the system by default. Configure the shared buffer size less than the total PFC
buffer size. If the buffer size and DCB buffer threshold settings are applied on one or more ports, a validation is
performed to determine whether following condition is satisfied: If the shared buffer size is more than the total
PFC buffer size value, the configuration is not saved and a system logging message is generated as follows:
Shared-pfc-buffer-size <= (Total-pfc-buffer-size — Σpfc priority <> buffer-size on each port, priority).
Dell(conf)#dcb pfc-shared-buffer-size 2000 %ERROR: pfc shared buffer size
configured cannot accommodate existing buffer requirement in the system.
Enter a smaller value for the shared buffer size or increase the total buffer size appropriately by using the dcb
pfc-total- buffer-size command.
Example
Dell(conf)#dcb pfc-shared-buffer-size 800
486 Data Center Bridging (DCB)