Users Guide

To remove the PFC and ETS settings in a DCB map from all stack units, use the no dcb-map stack-unit
all stack-ports all command.
Parameters
dcb-map-name Enter the name of the DCB map.
Defaults None
Command Modes CONFIGURATION
Supported Modes Programmable-Mux (PMUX)
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.4(0.0) Supported on the FN I/O Aggregator.
9.3(0.0) Introduced on the FC Flex IO Modules with I/O Aggregator.
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.
Syntax
dcb pfc-shared—buffer—size KB
Parameters
KB Enter a number in the range of 0 to 7787.
Default None.
Command Modes CONFIGURATION mode
Command History
Version Description
9.9(0.0) Introduced on the M I/O Aggregator and the FN I/O Aggregator.
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 allocated in the system by default. Congure the shared buer size 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 shared buer size is more than the total 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.
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.
Example
Dell(conf)#dcb pfc-shared-buffer-size 5000
Data Center Bridging (DCB) 101