Addendum

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Data Center Bridging (DCB) for FC Flex IO
Modules
Data center bridging (DCB) refers to a set of IEEE Ethernet enhancements that provide data centers with a
single, robust, converged network to support multiple traffic types, including local area network (LAN),
server, and storage traffic.
The Fibre Channel (FC) Flex IO module is supported on Dell Networking MXL 10/40GbE Switch and Dell
PowerEdge IO Aggregator (IOA). The MXL and IOA switch installed with the FC Flex IO module functions
as a top-of-rack edge switch that supports converged enhanced ethernet (CEE) traffic — Fibre channel
over Ethernet (FCoE) for storage, inter-process communication (IPC) for servers, and Ethernet local area
network (LAN) (IP cloud) for data — as well as FC links to one or more storage area network (SAN) fabrics.
The dcb-input and dcb-output configuration commands are deprecated, starting with Dell
Networking OS Release 9.3.0.0 on the S4810, S6000, M I/O Aggregator, and MXL 10/40GbE Switch
platforms. You must use the dcp-map command to create a DCB map to configure priority flow control
(PFC) and enhanced transmission selection (ETS) on Ethernet ports that support converged Ethernet
traffic.
The Dell Networking operating software (Dell) commands for data center bridging features include
802.1Qbb priority-based flow control (PFC), 802.1Qaz enhanced transmission selection (ETS), and the
data center bridging exchange (DCBX) protocol.
Interworking of DCB Map With DCB Buffer Threshold
Settings
DCB map functionality is supported on the S4810, S4820T, S6000, I/O Aggregator, and MXL platforms.
The dcb-input and dcb-output configuration commands are deprecated. You must use the dcp-map
command to create a DCB map to configure priority flow control (PFC) and enhanced transmission
selection (ETS) on Ethernet ports that support converged Ethernet traffic.
You can configure the dcb-buffer-threshold command and its related parameters only on ports with
either auto configuration or dcb-map configuration. This command is not supported on existing front-
panel interfaces or stack ports that are configured with the
dcb-input or dcb-output commands.
Similarly, if dcb-buffer-threshold configuration is present on any interface or a stack port, dcb-input or
dcb-ouput policy cannot be applied on those interfaces.
Example: When dcb-buffer-threshold is applied on interfaces or stack ports with dcb-input or dcb-
output policy, the following error message is displayed:
%Error: dcb-buffer-threshold not supported on interfaces with deprecated
commands
Example: When dcb-input or dcb-output is configured on interfaces or stack ports with dcb-buffer
threshold policy:
%Error: Deprecated command is not supported on interfaces with dcb-buffer-
threshold configured
Data Center Bridging (DCB) for FC Flex IO Modules
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