Service Manual

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.
dcb pfc-total-buffer-size
Configure the total buffer size for PFC in kilobytes.
Syntax
dcb pfc-total—buffer—size KB
Parameters
KB Enter a number in the range of 0 to 7787.
Default The default is 6592KB.
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(0.0P5) 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
Data Center Bridging (DCB) 642