Enterasys SecureStack C3K122-24 Hardware Installation Manual page 38

Connecting High-Speed Stacking Cables
• C2CAB‐LONG — One meter cable to connect from the top switch to the bottom switch in the
stack. This cable can also be used in place of the C2CAB‐SHORT cable to connect switches that
are too far apart due to the physical arrangement of the switches in the stack.
• C2CAB‐2M — Two meter 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 to reach.
• C2CAB‐5M — Five meter 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 to reach.
Figure 2‐8 on page 2‐14 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 is not used.
Figure 2-8
1 High-speed stacking cable
2 STACK DOWN connector
3 STACK UP connector
After connecting the cables to the stacking ports, proceed to "Configuring Switches in a Stack" on
page 2‐15 for instructions.
2-14 Hardware Installation
Note: The high-speed stacking cables are optional items and must be ordered separately.
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.
High-Speed Stacking Cable Connections
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4 STACK DOWN connector at top of stack
5 STACK UP connector at bottom of stack