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Example: When the dcb-input or dcb-output policy is configured on interfaces or stack ports with the dcb-buffer threshold
policy, the following error message is displayed:
%Error: Deprecated command is not supported on interfaces with dcb-buffer-threshold
configured
You must not modify the service-class dot1p mappings when any buffer-threshold-policy is configured on the system.
Dell(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:
Dell(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
Fibre Channel over Ethernet for FC Flex IO Modules
FCoE provides a converged Ethernet network that allows the combination of storage-area network (SAN) and LAN traffic on a
Layer 2 link by encapsulating Fibre Channel data into Ethernet frames.
The Fibre Channel (FC) Flex IO module is supported on Dell Networking Operating System (OS) FN IOM. The FN IOM 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, Interprocess 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.
FCoE works with the Ethernet enhancements provided in Data Center Bridging (DCB) to support lossless (no-drop) SAN and
LAN traffic. In addition, DCB provides flexible bandwidth sharing for different traffic types, such as LAN and SAN, according to
802.1p priority classes of service. DCBx should be enabled on the system before the FIP snooping feature is enabled.
All of the commands that are supported for FCoE on the FN IOM apply to the FC Flex IO modules. Similarly, all of the
configuration procedures and the settings that are applicable for FCoE on the FN IOM are valid for the FC Flex IO modules.
NPIV Proxy Gateway for FC Flex IO Modules
The N-port identifier virtualization (NPIV) Proxy Gateway (NPG) feature provides FCoE-FC bridging capability on the FN IOM
with the FC Flex IO module switch, allowing server CNAs to communicate with SAN fabrics over the FN IOM with the FC Flex
IO module.
To configure the FN IOM with the FC Flex IO module to operate as an NPIV proxy gateway, use the following commands:
NPIV Proxy Gateway Configuration on FC Flex IO Modules
The Fibre Channel (FC) Flex IO module is supported on the FN IOM. The FN IOM switch, installed with the FC Flex IO
module, function as a top-of-rack edge switch that supports Converged Enhanced Ethernet (CEE) traffic — Fibre Channel over
Ethernet (FCoE) for storage, Interprocess 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 N-port identifier virtualization (NPIV) proxy gateway (NPG) provides FCoE-FC bridging capability on the FN IOM with the
FC Flex IO module.
This chapter describes how to configure and use an NPIV proxy gateway on the FN IOM with the FC Flex IO module in a (SAN.
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FC Flex IO Modules