Enterasys Networks C2K122-24 Manuel d'utilisateur télécharger pdf (Page 39)

Connecting High-Speed Stacking Cables

SecureStack C2 Installation Guide 3-9

Figure 3-5 Fastening the Switch to the Rack

3. Ifyouare installingthisswitchinastackedconfiguration,repeatthisprocedurefor

eachswitchuntilallswitcheshavebeeninstalledinthestack,thenproceedto

“ConnectingHigh‐SpeedStackingCables”onpage 3‐9.Otherwise,proceedto

“ConnectingACandRPSPower”onpage 3‐13.

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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.

Figure 3‐6showsanexampleofafour‐highstackconnectedina

ringtopology.AllSTACK

DOWNandSTACKUPconnectorsareusedintheinstal lation.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isnotused.

1 Rails of 19-inch rack 2 Mounting screws (supplied by user)

Console

25 26

CPU

RPS

MGR

DOWN

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C2K122-24

TX RX TX RX

Note: The high-speed stacking cables are optional items and must be ordered separately.

There are two types of cables:

• C2CAB-SHORT cable (30.6 cm (12 in) long) to connect two adjacent switches in the

stack.

• C2CAB-LONG cable (1.0 m (36.2 in) long) to connect from the top switch to the bottom

switch in the stack. You only need one C2CAB-LONG cable per stack.

If the stack is in a configuration where the adjacent switches are too far apart for C2CAB-

SHORT cables, C2CAB-LONG cables can be used for the connections.

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Enterasys Networks C2K122-24 Manuel d'utilisateur Page 39