Users Guide

• dcb pfc-total-buffer-size

• dcb-buffer-threshold

• dcb-policy buffer-threshold (Global Configuration)

• service-class buffer shared-threshold-weight

• dcbx-port role

• dcbx version

• debug dcbx

• fc-map

• fcoe-map

• fcoe priority-bits

• iscsi priority-bits

• keepalive

• interface vlan (NPIV proxy gateway)

• pfc mode on

• pfc no-drop queues

• pfc priority

• priority-group

• priority-group bandwidth pfc

• priority-pgid

• qos-policy-output ets

• scheduler

• show dcb

• show interface dcbx detail

• show interface ets

• show interface pfc

• show interface pfc statistics

• show qos dcb-map

• show stack-unit stack-ports ets details

• show stack-unit stack-ports pfc details

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 Aggregator, 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 I/O Aggregator apply to the FC Flex IO modules. Similarly, all of the configuration

procedures and the settings that are applicable for FCoE on the I/O Aggregator are valid for the FC Flex IO modules.

Data Center Bridging (DCB)