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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
OL-19593-01
Chapter 2 Switch Installation
Data Stack Cabling Configurations
Figure 2-3 shows a recommended configuration when the switches are mounted side-by-side. Use the
1-meter and the 3-meter StackWise cables to connect the switches. This configuration provides
redundant connections.
Figure 2-3 Data Stacking up to Eight Switches in a Side-by-Side Mounting
Data Stack Bandwidth and Partitioning Examples
This section provides examples of data stack bandwidth and possible data stack partitioning.
Figure 2-4 shows a data stack of Catalyst 3750-X switches that provides full bandwidth and redundant
StackWise cable connections.
Figure 2-4 Example of a Data Stack with Full Bandwidth Connections
Figure 2-5 shows an example of a stack of Catalyst 3750-X switches with incomplete StackWise cabling
connections. This stack provides only half bandwidth and does not have redundant connections.
Figure 2-5 Example of a Data Stack with Half Bandwidth Connections
Figure 2-6 and Figure 2-7 show data stacks of Catalyst 3750-X switches with failover conditions. In
Figure 2-6, the StackWise cable is bad in link 2. Therefore, this stack provides only half bandwidth and
does not have redundant connections. In Figure 2-7, link 2 is bad. Therefore, this stack partitions into
two stacks, and the top and bottom switches become stack masters.
Figure 2-6 Example of a Data Stack with a Failover Condition
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