Dell C9000 Series Reference Manual page 722

buffer size. You must either enter a smaller value for the shared buffer size or increase the total buffer size
appropriately by using the dcb pfc-total- buffer-size command.
C9000 Series
Syntax
dcb pfc-shared—buffer—size KB
Parameters
KB
Default The default is 1 KB for S6000 platforms.
Command Modes CONFIGURATION mode
Command History
Version
9.9(0.0)
9.7(0.1)
9.7(0.0)
9.3(0.0)
Usage Information Configure the maximum shared buffer available for PFC traffic. You can choose to
increase or decrease the shared buffer that is currently allocated in the system by
default. You must configure the shared buffer size to be less than the total PFC buffer
size. If the buffer size and DCB buffer threshold settings are applied on one or more
ports, a validation is performed to determine whether following condition is satisfied: If
the preceding condition is not satisfied by the shared PFC buffer size value, the
configuration is not saved and a system logging message is generated as follows:
Shared-pfc-buffer-size <= (Total-pfc-buffer-size - Σpfc priority <> buffer-size on each
port, priority).
existing buffer requirement in the system.
Example
Dell(conf)#dcb pfc-shared-buffer-size
Enter a number in the range of 0 to 7787.
Description
Introduced on the C9010.
Introduced on the S3048-ON and S4048-ON.
Introduced on the S6000-ON.
Introduced on the S4810, S4820T, and S6000 platforms.
Dell(conf)#dcb pfc-shared-buffer-size
%ERROR: pfc shared buffer size configured cannot accommodate
2000
5000
Data Center Bridging (DCB) 722