Administrator Guide

Parameters
dcb-map-name Enter the name of the DCB map.
Defaults None
Command Modes CONFIGURATION
Command History
Version Description
9.9(0.0) Introduced on the C9010.
9.7(0.1) Introduced on the S3048-ON and S4048-ON..
9.7(0.0) Introduced on the S6000-ON.
9.3(0.0) Introduced on the S4810 and S6000 platforms.
Usage Information The dcb-map stack-unit all stack-ports all command overwrites any previous DCB maps applied
to stack ports.
dcb pfc-shared-buffer-size
Configure the maximum amount of shared buffer size for PFC packets in kilobytes.
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 validaiton is performed to determine whether following condition is satisfied: Shared-pfc-buffer-size
<= (Total-pfc-buffer-size - Σpfc priority <> buffer-size on each port, priority).
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 stating that the shared buffer size that you attempt to specify cannot be configured because of the existing total
buffer space on the system being lower than the shared 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 Enter a number in the range of 0 to 7787.
Default The default is 1 KB for S6000 platforms.
Command Modes CONFIGURATION mode
Command History
Version Description
9.9(0.0) Introduced on the C9010.
9.7(0.1) Introduced on the S3048-ON and S4048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.3(0.0) Introduced on the S4810, S4820T, and S6000 platforms.
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).
Dell(conf)#dcb pfc-shared-buffer-size 2000
%ERROR: pfc shared buffer size configured cannot accommodate existing
buffer requirement in the system.
Data Center Bridging (DCB) 535