Service Manual

128000 pause-threshold 103360 resume-threshold 83520
Dell(conf-qos-policy-buffer)# queue 4 pause no-drop buffer-size
128000 pause-threshold 103360 resume-threshold 83520
priority value buffer-size size pause-threshold threshold-value resume-offset
threshold-value shared-threshold-weight size
Dell(conf-dcb-buffer-thr)#priority 0 buffer-size 52 pause-threshold 16 resume-
offset 10 shared-threshold-weight 7
dcb enable pfc-queues
Configure the number of PFC queues.
Syntax
dcb enable pfc-queues value
Parameters
value Enter the number of PFC queues. The range is from 1 to 4. The number of ports
supported based on lossless queues configured will depend on the buffer.
Command Modes CONFIGURATION mode
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.3(0.0) Introduced on the MXL platform.
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 to be allocated for each priority and
the pause or resume thresholds for the buffer. This method of configuration enables you to effectively manage
and administer the behavior of lossless queues.
Example
Dell(conf)#dcb pfc-queues 4
dcb {ets | pfc} enable
Enable priority flow control or enhanced transmission selection on interface.
Syntax
dcb {ets | pfc} enable
• To disable ETS on interface, use “no dcb ets enable” command.
• To disable PFC on interface, use “no dcb pfc enable” command.
Defaults Enable
Command Modes INTERFACE
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.3 (0.1) Introduced on S6000, S4810, and S4820T.
Data Center Bridging (DCB) 391