Lenovo Flex System Fabric CN4093 User Manual

242 CN4093 Application Guide for N/OS 8.4
Ifusingthe2x40Gbportsasstackinglinks,firstconvertthe40Gbportsfromtheir
default4x10Gbmodeofoperationto40Gbmode.See:“Configuring QSFP+Ports”
onpage 160.
UsethefollowingcommandtospecifythelinkstobeusedinthestackingLAG:
Note: PortsconfiguredasServer
portsforusewithVMreadycannotbedesignated
asstackinglinks.
5. Oneachswitch,performareboot:
6. PhysicallyconnectthestackLAGs.
Tocreatetherecommendedtopology,attachthetwodesignatedstackinglinksina
bidirectionalring.AsshowninFigure 25,connecteachswitchinturntothenext,
starting
withtheMasterswitch.Tocompletethering,connectthelastMember
switchbacktotheMaster.
Figure 25. ExampleofStackingConnections
Note: Thestackingfeatureisdesignedsuchthatthestackinglinksinaring
topologydonotresultinbroadcastloops.Thestackingringisthusvalid(no
stackinglinks
areblocked),evenwhenSpanningTreeprotocolisenabled.
OncethestackLAGsareconnected,theswitcheswillperformlow‐levelstacking
configuration.
Note: Althoughstacklinkfailover/failbackisaccomplishedonasub‐secondbasis,
tomaintainthebeststackingoperationandavoidtrafficdisruption,itis
recommendednottodisruptstack
linksafterthestackisformed.
CN 4093(config)# boot stack higig-trunk <listofportnamesoraliases>
CN 4093(config)# reload
Switches
connected in
bidirectional
ring topology
Member
Switch
Member
Switch
Member
Switch
Master
Switch

Lenovo Flex System Fabric CN4093 Specifications

General

Brand	Lenovo
Model	Flex System Fabric CN4093
Category	Switch
Language	English