Verifying Switch Operation
Before you install the switch in a rack, on a wall, or on a table or shelf, power on the switch and verify that
it passes POST.
To power on the switch, plug one end of the AC power cord into the switch AC power connector, and plug
the other end into an AC power outlet.
As the switch powers on, it begins the POST, a series of tests that runs automatically to ensure that the switch
functions properly. LEDs can blink during the test. POST lasts approximately 1 minute. The SYST LED
blinks green, and the other LEDs remain solid green.
When the switch completes POST successfully, the SYST LED remains green. The LEDs turn off and then
reflect the switch operating status. If a switch fails POST, the SYST LED turns amber.
POST failures are usually fatal. Call Cisco technical support representative if your switch fails POST.
After a successful POST, unplug the power cord from the switch and install the switch in a rack, on a wall,
on a table, or on a shelf.
Planning a Switch Data Stack
Switch Stacking Guidelines
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. 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:
• Number of switches in the stack. You can create data stacks with up to eight switches in a stack.
• Length of the cable. Order the appropriate cable from your Cisco sales representative. The length of
FlexStack cable depends on your configuration. These are the different sizes available:
• 0.5 meter cable (STACK-T4-50CM)
• 1 meter cable (STACK-T4-1M)
• 3 meter cable (STACK-T4-3M)
• Minimum bend radius and coiled diameter for StackWise cables. We recommend a minimum bend radius
and coiled diameter for each StackWise cable.
Data Stack Cabling Configurations
This 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. The configuration example uses the supplied 0.5-meter StackWise cable. The example shows
the full-ring configuration that provides redundant connections.
Cisco Catalyst 9200 Series Switches Hardware Installation Guide
17
Installing the Switch
Verifying Switch Operation
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