Lenovo Flex System Fabric CN4093 User Manual

302 CN4093 Application Guide for N/OS 8.4
Converged Enhanced Ethernet
ConvergedEnhancedEthernet(CEE)referstoasetofIEEEstandardsdesignedto
allowdifferentphysicalnetworkswithdifferentdatahandlingrequirementstobe
convergedtogether,simplifyingmanagement,increasingefficiencyand
utilization,andleveraginglegacyinves tmentswithoutsacrificingevolutionary
growth.
CEEstandardsweredevelopedprimarilytoenableFibreChanneltrafficto
be
carriedoverEthernetnetworks.ThisrequiredenhancingtheexistingEthernet
standardstomakethemlosslessonaper‐prioritytrafficbasis,andtoprovidea
mechanismtocarryconverged(LAN/SAN/IPC)trafficonasinglephysicallink.
AlthoughCEEstandardsweredesignedwithFCoEinmind,theyarenotlimitedto

FCoEinstallations.CEEfeaturescanbeutilizedintraditionalLAN(non‐FCoE)
networkstoprovidelosslessguaranteesonaper‐prioritybasis,andtoprovide
efficientbandwidthallocationbasedonapplicationneeds.
Turning CEE On or Off
BydefaultontheCN4093,CEEisturnedoff.ToturnCEEonoroff,usethe
followingISCLIconfigurationmodecommands:
CAUTION:
TurningCEEonwillautomaticallychangesome802.1pQoSand802.3xstandard
flowcontrolsettingsontheCN4093.Readthefollowingmaterialcarefullyto
determinewhetheryouwillneedtotakeactiontoreconfigureexpectedsettings.
ItisrecommendedthatyoubackupyourconfigurationpriortoturningCEEon.
Viewingthefilewillallowyoutomanuallyre‐createtheequivalent
configurationonceCEEisturnedon,andwillalsoallowyoutorecoveryour
priorconfigurationifyouneedtoturnCEEoff.
Effects on Link Layer Discovery Protocol
WhenCEEisturnedon,LinkLayerDiscoveryProtocol(LLDP)isautomatically
turnedonandenabledforreceivingandtransmittingDCBXinformation.LLDP
cannotbeturnedoffwhileCEEisturnedon.
CN 4093(config)# [no] cee enable

Lenovo Flex System Fabric CN4093 Specifications

General

Brand	Lenovo
Model	Flex System Fabric CN4093
Category	Switch
Language	English