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power over ethernet - Cisco
CHAPTER16-1 Cisco IOS Software Configuration Guide, Release power over ethernet Support This chapter describes how to configure power over ethernet (PoE) support on the Catalyst 6500 series additional information about Cisco Catalyst 6500 Series Switches (including configuration examples and troubleshooting information), see the documents listed on this page: Participate in the Technical Documentation Ideas forum This chapter consists of these sections: Understanding PoE, page 16-1 Configuring PoE Support, page 16-4 NoteFor information about switching modules that support PoE, see the Release Notes for Cisco IOS Release publication at this URL: Understanding PoE These sections describe PoE: Device Roles, page 16-2 PoE Overview, page 16-2 CPD-Based PoE Management, page 16-3 Inline power IEEE power Classification Override, page 16-3 LLDP Inline power Negotiation for PoE+ (IEEE ), page 16-416-2 Cisco IOS Software Configuration Guide, Release 16 Configuring power over ethernet SupportUnderstanding PoEDevice Roles power sourcing equipment (PSE) A device that provides power through a twisted-pair ethernet connection.
supervisor engine reduces or increa ses the allocated power, up to the hardware limit of the installed PoE daughtercard. Caution When a PD cable is plugged into a port and the power is turned on, the supervisor engine has a 4-second timeout waiting for the link to go up on the line. During those 4 seconds, if the IP phone cable is
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