Users Guide

Command Mode SYSTEM-QOS
Usage
Information
This command configures the maximum size of the lossless buffer pool. The no version of this command
removes the maximum buffer size limit.
Example
OS10(config-sys-qos)# pfc-max-buffer-size 2000
Supported
Releases
10.4.0E(R1) or later
pfc-shared-buffer-size
Changes the shared buffers size limit for priority flow-control enabled flows.
Syntax
pfc-shared-buffer-size buffer-size
Parameters buffer-size — Enter the size of the priority flow-control buffer in KB, from 0 to 8911.
Default 832 KB
Command Mode SYSTEM-QOS
Usage
Information
The no version of this command returns the value to the default.
Example
OS10(conf-sys-qos)# pfc-shared-buffer-size 2000
Supported
Releases
10.3.0E or later
pfc-shared-headroom-buffer-size
Configures the shared headroom size for absorbing the packets after pause frames generate.
NOTE:
This command is available only on the following platforms:
● S5212F-ON, S5224F-ON, S5232F-ON, S5248F-ON, S5296F-ON
● Z9100-ON
● Z9264F-ON
Syntax
pfc-shared-headroom-buffer-size headroom-buffer-size
Parameters headroom-buffer-size — Enter the size of the priority flow-control headroom buffer in KB, from 1
to 3399.
Default 1024 KB
Command Mode SYSTEM-QOS
Usage
Information
All PFC-enabled priority groups can use the shared headroom space. Headroom is the buffer space that
absorbs the incoming packets after the PFC frames reach the sender. After the threshold is reached, PFC
frames generate towards the sender. The packets sent by the sender after the PFC frames generate are
absorbed into the Headroom buffer. The no version of this command returns the value to the default.
Example
OS10(conf-sys-qos)# pfc-shared-headroom-buffer-size 2000
Supported
Releases
10.4.0E(R1) or later
Quality of service 1587