Brocade ICX 6610 Stackable Switch Hardware Installation Guide - Manual (Page 48)

Stacking topologies
Two basic ring topologies are supported in a mixed stack: single ring and dual ring.
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.
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 on all stack units.
Topology 1: Single ring
In the following figure, two ICX 6610 devices form the backbone, and there are three ICX 6450
peripheral devices. There can be up to six ICX 6450 peripheral devices.
Stacking topologies
46 Brocade ICX 6610 Stackable Switch Hardware Installation Guide
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