Service Manual

Version Description
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-buer-size
Congure the maximum amount of shared buer size for PFC packets in kilobytes.
You must congure the shared buer size to be less than the total PFC buer size. If the buer size and DCB buer threshold
settings are applied on one or more ports, a validaiton is performed to determine whether following condition is satised: Shared-pfc-
buer-size <= (Total-pfc-buer-size - Σpfc priority <> buer-size on each port, priority).
If the preceding condition is not satised by the shared PFC buer size value, the conguration is not saved and a system logging
message is generated stating that the shared buer size that you attempt to specify cannot be congured because of the existing
total buer space on the system being lower than the shared buer size. You must either enter a smaller value for the shared buer
size or increase the total buer size appropriately by using the dcb pfc-total- buffer-size command.
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
9.7(0.0) Introduced on the S6000-ON.
9.3(0.0) Introduced on the S4810, S4820T, and S6000 platforms.
Usage Information Congure the maximum shared buer available for PFC trac. You can choose to increase or decrease the
shared buer that is currently allocated in the system by default. You must congure the shared buer size
to be less than the total PFC buer size. If the buer size and DCB buer threshold settings are applied on
one or more ports, a validation is performed to determine whether following condition is satised: If the
preceding condition is not satised by the shared PFC buer size value, the conguration is not saved and a
system logging message is generated as follows:
Shared-pfc-buer-size <= (Total-pfc-buer-size - Σpfc priority <> buer-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.
Example
Dell(conf)#dcb pfc-shared-buffer-size 5000
434
Data Center Bridging (DCB)