Stacking configuration requirements
Before configuring the traditional stack using the CLI, physically connect the devices using stacking cables. For information about
configuring a stack, refer to the
Brocade FastIron Stacking Configuration Guide
.
Stacking cables
Use copper stacking cables or SFP+ fiber-optic cables to connect ICX 6450 devices or ICX 6430 devices in a traditional stack. The
active copper cable lengths for 1-Gbps ports are 1 meter and 5 meters. The copper cable lengths for 10-Gbps ports are 1 meter, 3
meters, and 5 meters.
Stack size
A traditional stack can contain a maximum of eight ICX 6450 devices or four ICX 6430 devices. A traditional stack cannot contain both
ICX 6430 and ICX 6450 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 forming 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:
•
Linear and ring stacking topologies using one port per trunk (the most commonly configured stacking topology)
•
Linear stacking topology using both ports in each trunk.
•
Ring stacking topology using both ports in each trunk
Connecting devices in a traditional stack
Brocade ICX 6430 and ICX 6450 Stackable Switches Hardware Installation Guide
36
Part Number: 53-1003617-03