Brocade ICX 6610 Stackable Switch Hardware Installation Guide - Manual (Page 40)

Stack size
A traditional stack can contain a maximum of eight ICX 6610 devices.
Stacking topologies
Both linear and ring topologies are supported in a traditional stack. In a linear stack topology, there is a
connection between each switch that carries two-way communications across the stack. This
connection can use one port or two ports per trunk.
For example, in a four-unit stack using a linear topology, unit 1 connects to unit 2, unit 2 to unit 3, and
unit 3 to unit 4.
In ring stack topology, there is an extra connection between the logical first and last devices to form a
"ring" or "closed-loop." The closed-loop connection provides a redundant path for the stack link, so if
one link fails, stack communications can be maintained.
For example, in a four-unit stack using a ring topology, unit 1 connects to unit 2, unit 2 to unit 3, unit 3
to unit 4, and unit 4 connects to unit 1.
You can connect stacking units using one port per trunk or both ports in a trunk. For maximum
bandwidth and link redundancy, use both ports per trunk.
The following figures show supported stacking topologies:
Stack size
38 Brocade ICX 6610 Stackable Switch Hardware Installation Guide
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