2-5
Catalyst 3650 Switch Hardware Installation Guide
OL-29734-01
Chapter 2 Switch Installation
Planning a Switch Data Stack
Powering Off the Switch
After a successful POST, disconnect the power cord from the switch. Install the switch in a rack, on a
table, or on a shelf as described in the
Chapter 2, “Installing the Switch,”
section.
Planning a Switch Data Stack
Catalyst 3650 switches can share bandwidth by using data stacking.
•
Switch Stacking Guidelines, page 2-5
•
Data Stack Cabling Configurations, page 2-5
•
Data Stack Bandwidth and Partitioning Examples, page 2-6
•
Power-On Sequence for Switch Data Stacks, page 2-7
•
Changes to Switch Stack Membership, page 2-8
Switch Stacking Guidelines
For general concepts and management procedures for switch stacks, see the switch software
configuration guide on Cisco.com.
A StackWise adapter must be installed in the stacking port to enable stacking. The StackWise cable
connects to the StackWise adapter in the stacking port. For switches ordered with stacking, the
StackWise adapters are pre-installed. If the switch is not ordered with stacking, the adapters must be
ordered separately and installed.
Before connecting the switches in a stack, observe these stacking guidelines:
•
Size of the switch and any optional power supply module. The 1025-W and 1100-W power supply
modules is longer than the other modules. Stacking switches with the same power supply modules
together makes it easier to cable the switches.
•
Length of StackWise cable. Depending on the configurations that you have, you might need
different-sized StackWise cables. If you do not specify the length of the StackWise cable, the
0.5-meter cable is supplied. If you need the 1-meter cable or the 3-meter cable, you can order it from
your Cisco supplier. The
“Data Stack Cabling Configurations” section on page 2-5
provides
examples of recommended configurations.
•
Minimum bend radius and coiled diameter for StackWise cables. Cisco recommends a minimum
bend radius and coiled diameter for each StackWise cable.
•
Data stacks can be created with up to nine switches in a stack.
Note
You cannot have a switch stack containing a mix of Catalyst 3650 and Catalyst 3850 switches.
Data Stack Cabling Configurations
Figure 2-1
is an example of a recommended configuration that uses the supplied 0.5-meter StackWise
cable. In this example, the switches are stacked in a vertical rack or on a table. This configuration
provides redundant connections.
