Power-On Sequence For Switch Stacks; Installing The Switch; Rack-Mounting - Cisco Catalyst 2975 Hardware Installation Manual

Chapter 2 Switch Installation

Power-On Sequence for Switch Stacks

Consider these guidelines before you power on the switches in a stack:
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For conditions that can cause a stack master re-election or to manually elect the stack master, see the
"Managing Switch Stacks" chapter in the switch software configuration guide on Cisco.com.

Installing the Switch

This section describes these installation procedures:
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Rack-Mounting

Installation in other than 19-inch racks requires an optional bracket kit not included with the switch.
Figure 2-9
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To prevent bodily injury when mounting or servicing this unit in a rack, you must take special
Warning
precautions to ensure that the system remains stable. The following guidelines are provided to
ensure your safety:
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OL-17784-01
The sequence in which the switches are first powered on might affect the switch that becomes the
stack master.
If you want a particular switch to be the stack master, power on that switch first. This switch
becomes the stack master and remains the stack master until a master re-election is required. After
1 minute, power on the other switches in the stack.
If you have no preference as to which switch becomes the stack master, power on all the switches
in the stack within a 1-minute timeframe. These switches participate in the stack master election.
Switches powered on after the 1-minute timeframe do not participate in the election.
Power off a switch before you add it to or remove it from an existing switch stack.
Rack-Mounting, page 2-9
Wall-Mounting, page 2-13
Table- or Shelf-Mounting, page 2-16
After Switch Installation, page 2-16
shows the standard 19-inch brackets and these optional mounting brackets:
23/24-inch bracket, part number 700-12398-XX
ETSI bracket, part number 700-19781XX
This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest
component at the bottom of the rack.
If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in
Statement 1006
the rack.
Catalyst 2975 Switch Hardware Installation Guide
Installing the Switch
2-9