Administrator Guide

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
9.9(0.0) Introduced on the S6000 and the S6000–ON.
9.8(0.0) Introduced on the S4048-ON.
9.6(0.0) Introduced on the S5000.
9.3(0.0) Introduced on the S4810 and S4820T platforms.
Usage Information You can configure up to a maximum of four lossless (PFC) queues. By configuring four lossless queues, you can
configure four different priorities and assign a particular priority to each application that your network is used to
process. For example, you can assign a higher priority for time-sensitive applications and a lower priority for other
services, such as file transfers. You can configure the amount of buffer space for each priority and the pause or
resume thresholds for the buffer. This method of configuration enables you to manage and administer the
behavior of lossless queues.
Example for
Configuration
Mode
Dell(conf)# dcb-policy buffer-threshold stack-unit all stack-ports all test
Example for
Interface Mode
Dell(conf-if-te-1/1)# dcb-policy buffer-threshold test
show qos dcb-buffer-threshold
Displays the DCB buffer threshold assigned to a QoS policy.
Syntax
show qos dcb buffer-threshold {name}
Parameters
name Enter the name of the profile, which can be a string of up to 32 characters in length.
Command Modes
EXEC
EXEC Privilege
Usage Information The following table describes the output fields displayed for the show command:
Field Description
Name Name of the DCB buffer threshold profile
Buffer threshold
parameters
Buffer size allocated for the PFC priority queue and the priority of the queue
Example
Dell# show qos dcb buffer-threshold
Name : test1
Buffer threshold parameters:
pfc priority 0 buffer-size 40
pfc priority 3 buffer-size 50
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 and Z9500.
9.3(0.0) Introduced on the S6000 platform.
510 Data Center Bridging (DCB)