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CHAPTER
7-1
Software Configuration Guide—Release 12.2(25)SG
OL-7659-03
7
Environmental Monitoring and Power
Management
Note Before reading this chapter, read the "Preparing for Installation” section of the
Catalyst 4500 Series Installation Guide. It is important to ensure that your installation site has enough
power and cooling to accommodate the additional electrical load and heat introduced by PoE.
This chapter describes power management and environmental monitoring features in the Catalyst 4500
series switches. It provides guidelines, procedures, and configuration examples.
This chapter consists of the following major sections:
• Understanding Environmental Monitoring, page 7-1
• Power Management, page 7-3
Note For complete syntax and usage information for the switch commands used in this chapter, refer to the
Catalyst 4500 Series Switch Cisco IOS Command Reference and related publications at
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/index.htm.
Understanding Environmental Monitoring
This section contains the following subsections:
• Using CLI Commands to Monitor your Environment, page 7-2
• System Alarms, page 7-2
Environmental monitoring of chassis components provides early warning indications of possible
component failure. This warning helps you to ensure the safe and reliable operation of your system and
avoid network interruptions.
This section describes how to monitor critical system components so that you can identify and rapidly
correct hardware-related problems.