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Cisco Bug: CSCvs52594 - 9300L-48P suddenly stops providing PoE on certain ports

Last Modified

Jan 18, 2020

Products (1)

  • Cisco Catalyst 9300 Series Switches

Known Affected Releases

Gibraltar-16.12.1

Description (partial)

Symptom:
A 9300L-48P switch running 16.12.1 may stop providing POE on certain ports. The affected ports will show as "faulty" in the "show power inline" output

Example
show power inline
<snip>
Gi1/0/41  auto   faulty     0.0     n/a                 n/a   30.0 
Gi1/0/42  auto   faulty     0.0     n/a                 n/a   30.0 
Gi1/0/43  auto   faulty     0.0     n/a                 n/a   30.0 

In some cases "Power Controller reports power supply over heat" logs may also be generated for the "faulty" ports

show logging
<snip>
Dec 16 08:33:18.151 CST: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/41: PD removed
*Dec 16 08:33:18.165 CST: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi1/0/41: Power Controller reports power supply over heat
*Dec 16 08:33:18.166 CST: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/42: PD removed
*Dec 16 08:33:18.167 CST: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi1/0/42: Power Controller reports power supply over heat
*Dec 16 08:33:18.168 CST: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/43: PD removed
*Dec 16 08:33:18.168 CST: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error, Interface Gi1/0/43: Power Controller reports power supply over heat

Conditions:
Currently observed on 9300L-48P running 16.12.1
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