CLI 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
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048–ON.
9.7(0.0) Introduced on the S6000-ON.
9.6(0.0) Introduced on the S5000.
9.3(0.0) Introduced on the S6000, S4810, and S4820T.
Usage Information
Configure the maximum buffer available for PFC traffic. You can choose to
increase or decrease the buffer size that is allocated in the system by default.
However, if you modify the PFC buffer size lower than the previously configured
size, the system determines whether this reduction in size is valid without
disrupting the existing configuration. In such a scenario, disable and re-enable
DCB. For example, if you modify the total buffer size as 4000 KB from the previous
size of 5000 KB, an error message is displayed that this reduction cannot be
performed owing to existing system configuration because of queues that are
being currently in process.
The lossless queue limit per port is validated based on the dcb pfc-queues
command. PFC queue configuration identifies the maximum number of queues a
port can support. Although the queue limit per port is a baseline when dynamic
buffering is enabled, the limit per port for queues depends on the availability of the
buffer.
Example
Dell(conf)# dcb pfc-total-buffer-size 5000
Dell(conf)# dcb pfc-total-buffer-size 4000
%ERROR: Total pfc buffer size configured cannot accommodate
existing buffer requirement in the system.
show running-config dcb-buffer-threshold
Displays the DCB buffer threshold details in the running configuration.
Syntax
show running—config buffer-threshold
Command Modes
EXEC
EXEC Privilege
516
Data Center Bridging (DCB)