User manual

Connecting High-Speed Stacking Cables
SecureStack B3 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8switchescanbestackedtogetherusing
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
B3G124
‐24PandB3G124‐48P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seperatemountingracks
and
requirealongercablereach.
Figure 3‐7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(1)
connectionsarefromtheSTACKDOWNconnector(2)ofoneswitchtothe
STACKUP(3)
connectorofthenextswitchupinthestack.Ahigh‐speedstacki ngcable
connectionfromtheSTACKDOWN(4)
connectoroftheswitchatthetopofthestackto
theSTACKUP(5)
connectoratthebottomofthestackcompletestheringconnection.Ina
daisychaintopology,thelastcableconnectionisnotmade.