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Show power inline

As explained in Acing the CCNA Exam: Volume 2 Advanced Networking and Security

show power inline is a Cisco IOS command that displays the PoE status and power information for switch ports.

show power inline verifies Power over Ethernet (PoE) status and power information for switch ports. It helps confirm whether connected powered devices (PDs) are receiving power and how much of the switch’s power budget remains. section 10.1.2

Read the main output fields as follows:

  • Device identifies the powered device; Class indicates its power needs; Max shows the port’s maximum allocation. section 10.1.2

Verification example

SW1# show power inline reports 124.0 W available, 30.8 W used, and 93.2 W remaining. Fa0/1 and Fa0/2 are on, each supplying 15.4 W to a class 3 wireless access point; Fa0/3 is off with no detected device.

How Acing the CCNA Exam: Volume 2 Advanced Networking and Security covers it

How deep it goes
Interprets budget, port state, device, class, and wattage fields without detailing internal PoE circuitry.
Examples
Uses Cisco IOS output for wireless access points, including class 3 devices receiving 15.4 watts.
What it assumes
Assumes familiarity with switch interfaces and introduces powered devices, power classes, and PoE budgets.
What you can do after
Diagnose PoE availability and port delivery using Cisco IOS command output.
How it connects
Connects PoE status with powered devices, power classes, power budgets, and power inline configuration.
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