Configuration Guide User guide

246 FastIron Configuration Guide
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Connecting ICX 6450 and ICX 6430 devices in a stack
For example, you can connect ports 1/2/3 to 1/2/4 to form one trunk on one device, and
ports 2/2/1 to 2/2/2 to form a second trunk on another device.
• If you connect both ports in a trunk, both ports must connect to both ports of one trunk on
another device.
ICX 6430 and ICX 6450 stack topologies
In a linear stack topology, there is a single stack cable connection between each switch that carries
two-way communications across the stack. In a ring stack topology, 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 be
maintained.
The following figures show stacking cabling configurations.
Figure 19 shows an example of how the stack cables can be connected between switches if you
only connect one port per trunk. The figure shows both linear and ring stacking configurations. The
one port per trunk topology is the most commonly configured stacking configuration and is
applicable to both ICX 6430 and ICX 6450 switches.
Figure 20 shows how the stack cables are connected between switches in a linear stacking
configuration for dual linking. The linear stacking configuration is applicable to both ICX 6430 and
ICX 6450 devices.
Figure 21 shows how the stack cables are connected between switches in a ring stacking
configuration. The ring stacking configuration is applicable to both ICX 6430 and ICX 6450 devices.