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Connecting High-Speed Stacking Cables

SecureStack C3 Installation Guide 3-11

Connecting High-Speed Stacking Cables

Thestackofswitchescanbeconnectedinaringordaisychaintopology.Inaring

topologyalltheswitchesareconnected.Theonlydifferenceinthecableconnectionsina

daisychaintopologyisthatonecableisnotinstalled.Uptosevenoreightswitchescanbe

stacked

togetherandconnectedbyhigh‐speedstackingcables.Youcanaddswitchesand

reachuptoamaximumof384Ethernetportsperstack.Thehigh‐speedstackingcables

allowtheentirestacktooperatewithasingleIPaddress.

Thehigh‐speedstackingcablesareoptionalitemsandmustbe

orderedseparately.The

C3G124‐24andC3G124‐48supportthreetypesofSecureStackstackingcables:

•C2CAB‐SHORTcabletoconnecttwoadjacentswitchesinthestack.Ifthestackis

inaconfigurationwheretheadjacentswitchesaretoofarapartfortheSHORT

cables,theLONGcablecanbeused

fortheconnections.

•C2CAB‐LONGcabletoconnectfromthetopswitchtothebottomswitchinthe

stack.YouneedonlyoneC2CAB‐LONGcableperstack.

•C2CAB‐5Mcabletoconnectfromthetopswitchtothebottomswitchinthestack

whenthesetwoswitchesarephysicallylocated

inseparatemountingracksand

requirealongercablereach.

Figure 3‐9showsanexampleofafour‐highstackconnectedinaring topology.AllSTACK

DOWNandSTACKUPconnectorsareusedintheinstallation.Thehigh‐speedstacking

cableconnectionsarefromtheSTACKDOWNconnectorofone

switchtotheSTACKUP

connectorofthenextswitchupinthestack.Ahigh‐speedstackingcableconnectionfrom

theSTACKDOWNconnectoroftheswitchatthetopofthestacktotheSTACKUP

connectoratthebottomofthestackcompletestheringconnection.Ina

daisychain

topology,onecableconnectionisnotmade.

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