Addendum

You must not modify the service-class dot1p mappings when any buffer-threshold-policy is configured
on the system.
S4810-1(conf)#service-class dot1p-mapping dot1p0 3
% Error: PFC buffer-threshold policies conflict with dot1p mappings. Please
remove all dcb-buffer-threshold policies to change mappings.
The show dcb command has been enhanced to display the following additional buffer-related
information:
S4810-YU-MR-FTOS (conf)#do show dcb
dcb Status : Enabled
PFC Queue Count : 2 --Indicate the PFC queue configured.
Total buffer (lossy + lossless)(in KB): 7787--Total buffer space for lossy and
lossless queues
PFC total buffer (in KB): 6526 --Indicates the total buffer (configured or
default)
PFC shared buffer (in KB): 832--Indicates the shared buffer (Configured or
default)
PFC available buffer ( in KB): 5694--Indicates remaining available buffers for
PFC that are free to be allocated
dcb-map
Create a DCB map to configure priority flow control (PFC) and enhanced transmission selection (ETS) on
Ethernet ports that support converged Ethernet traffic. Apply the DCB map to an Ethernet interface.
S4810, S6000, and FC Flex IO Modules with MXL and I/O Aggregator
Syntax
dcb-map map-name
Parameters
map-name Enter a DCB map name. The maximum number of
alphanumeric characters is 32.
Defaults None. There are no pre-configured PFC and ETS settings on S5000 Ethernet
interfaces.
Command
Modes
CONFIGURATION
INTERFACE
Command
History
Version 9.3.0.0 Introduced on the S4810 and S6000 platforms.
Version 9.3.0.0 Introduced on the FC Flex IO module installed in the M I/O
Aggregator and MXL 10/40GbE Switch.
Usage
Information
A DCB map is a template used to configure DCB parameters and apply them on
converged Ethernet interfaces. DCB parameters include priority-based flow control
(PFC) and enhanced traffic selection (ETS).
To display the PFC and ETS settings in DCB maps, enter the show qos dcb-map
command.
Use the dcb-map command to create a DCB map to specify PFC and ETS settings
and apply it on Ethernet ports. After you apply a DCB map to an interface, the PFC
and ETS settings in the map are applied when the Ethernet port is enabled. DCBx is
enabled on Ethernet ports by default.
The dcb-map command is supported only on physical Ethernet interfaces.
488
Data Center Bridging (DCB) for FC Flex IO Modules