Edge-Core ECS4610-24F Installation Guide download pdf (Page 49)

HAPTER

| Installing the Switch

Connecting Switches in a Stack

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CONNECTING SWITCHES IN A STACK

Figure 18 shows how the stack cables are connected between switches in a

stack. Each stacking connection is a 48 Gbps full-duplex high-speed serial link

using proprietary stacking cables. The switch supports a line- and ring-topology

stacking configuration, or can be used stand alone. To ensure minimal disruption

in case a unit or stacking cable fails, we recommend always use a ring-topology.

In line-topology stacking there is a single stack cable connection between each

switch that carries two-way communications across the stack. In ring-topology

stacking, an extra cable is connected between the top and bottom switches

forming a “ring” or “closed-loop.” The closed-loop cable provides a redundant

path for the stack link, so if one link fails, stack communications can still be

maintained. Figure 18 illustrates a ring-topology stacking configuration.

To connect up to eight switches in a stack, perform the following steps:

1. Plug one end of the stack cable (ordered separately) in the Down (right)

port of the top unit.

2. Plug the other end of the stack cable into the Up (left) port of the next unit.

3. Repeat steps 1 and 2 for each unit in the stack. Form a simple chain starting

at the Down port on the top unit and ending at the Up port on the bottom

unit (stacking up to 8 units).

4. (Optional) To form a wrap-around topology, plug one end of a stack cable

into the Down port on the bottom unit and the other end into the Up port on

the top unit.

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Edge-Core ECS4610-24F Installation Guide Page 49