Connecting High-Speed Stacking Cables - Enterasys SecureStack C2 C2G124-24 Hardware Installation Manual

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.
The high‐speed stacking cables are optional items and must be ordered separately.
The C2G124‐48 and C2H124‐48 support three types of cables:
• C2CAB‐SHORT cable to connect two adjacent switches in the stack. If the stack is in a
configuration where the adjacent switches are two 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 only need 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 may be physically located in separate mounting racks and
require a longer cable reach.
Figure
DOWN and STACK UP connectors 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.
Note: The C2G124-24 supports only the C2CAB-SHORT and C2CAB-LONG stacking
cables.
3‐7 shows an example of a four‐high stack connected in a ring topology. All STACK

Connecting High-Speed Stacking Cables

SecureStack C2 Installation Guide 3-11