Switch 9300s - inline power denied. Reason: insufficient power

[diego.ibanez]

Hello Team,

Yesterday I performed the upgrade from version 16.12.05b to 17.9.4.

After upgrade and reboot, four access point turned down. 

When I saw the log, I got the following message:

Mar 10 12:30:21: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/1: PD removed
Mar 10 12:30:22: %ILPOWER-5-DETECT: Interface Gi2/0/1: Power Device detected: IEEE PD
Mar 10 12:30:22: %ILPOWER-5-ILPOWER_POWER_DENY: Interface Gi2/0/1: inline power denied. Reason: insufficient power

I upgraded around 60 switches, with almost the same configuration template, and only one presented this issue.

Before installing the new firmware, the Switch APs were active and providing service normally

At this moment, I'm performing a rollback action to the previous IOS firmware, in the meantime the problem is identified and solved.

I'll appreciate any assistance

[balaji.bandi]

All switches may be same, but may be this switch may have more AP and not have enough power ?(may be)

when the AP boots it may required power

check show power inline you have enough power ?

[diego.ibanez]

Hello,

It's an stack of two Switches 9300

H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active a478.06e1.6380 15 V05 Ready
2 Standby 84eb.ef1f.c400 1 V05 Ready

And the power supplies are good, the switch says:

SW PID Serial# Status Sys Pwr PoE Pwr Watts
-- ------------------ ---------- --------------- ------- ------- -----
1A PWR-C1-715WAC-P DCC2530C0AK OK Good Good 715
1B PWR-C1-715WAC-P DCC2530C0AU OK Good Good 715

The power inline:

Module Available Used Remaining
(Watts) (Watts) (Watts)
------ --------- -------- ---------
1 n/a n/a n/a
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Gi1/0/1 auto power-deny 0.0 n/a n/a 30.0
Gi1/0/2 auto power-deny 0.0 n/a n/a 30.0
Gi1/0/3 auto off 0.0 n/a n/a 30.0
Gi1/0/4 auto off 0.0 n/a n/a 30.0
Gi1/0/5 auto off 0.0 n/a n/a 30.0
Gi1/0/6 auto off 0.0 n/a n/a 30.0
Gi1/0/7 auto off 0.0 n/a n/a 30.0
Gi1/0/8 auto off 0.0 n/a n/a 30.0
Gi1/0/9 auto off 0.0 n/a n/a 30.0
Gi1/0/10 auto off 0.0 n/a n/a 30.0
Gi1/0/11 auto off 0.0 n/a n/a 30.0
Gi1/0/12 auto off 0.0 n/a n/a 30.0
Gi1/0/13 auto off 0.0 n/a n/a 30.0
Gi1/0/14 auto off 0.0 n/a n/a 30.0
Gi1/0/15 auto off 0.0 n/a n/a 30.0
Gi1/0/16 auto off 0.0 n/a n/a 30.0
Gi1/0/17 auto off 0.0 n/a n/a 30.0
Gi1/0/18 auto off 0.0 n/a n/a 30.0
Gi1/0/19 auto off 0.0 n/a n/a 30.0
Gi1/0/20 auto off 0.0 n/a n/a 30.0
Gi1/0/21 auto off 0.0 n/a n/a 30.0
Gi1/0/22 auto off 0.0 n/a n/a 30.0
Gi1/0/23 auto off 0.0 n/a n/a 30.0
Gi1/0/24 off off 0.0 n/a n/a 30.0

Module Available Used Remaining
(Watts) (Watts) (Watts)
------ --------- -------- ---------
2 n/a n/a n/a
Interface Admin Oper Power Device Class Max
(Watts)
--------- ------ ---------- ------- ------------------- ----- ----
Gi2/0/1 auto power-deny 0.0 n/a n/a 30.0
Gi2/0/2 auto power-deny 0.0 n/a n/a 30.0
Gi2/0/3 auto off 0.0 n/a n/a 30.0
Gi2/0/4 auto off 0.0 n/a n/a 30.0
Gi2/0/5 auto off 0.0 n/a n/a 30.0
Gi2/0/6 auto off 0.0 n/a n/a 30.0
Gi2/0/7 auto off 0.0 n/a n/a 30.0
Gi2/0/8 auto off 0.0 n/a n/a 30.0
Gi2/0/9 auto off 0.0 n/a n/a 30.0
Gi2/0/10 auto off 0.0 n/a n/a 30.0
Gi2/0/11 auto off 0.0 n/a n/a 30.0
Gi2/0/12 auto off 0.0 n/a n/a 30.0
Gi2/0/13 auto off 0.0 n/a n/a 30.0
Gi2/0/14 auto off 0.0 n/a n/a 30.0
Gi2/0/15 auto off 0.0 n/a n/a 30.0
Gi2/0/16 auto off 0.0 n/a n/a 30.0
Gi2/0/17 auto off 0.0 n/a n/a 30.0
Gi2/0/18 auto off 0.0 n/a n/a 30.0
Gi2/0/19 auto off 0.0 n/a n/a 30.0
Gi2/0/20 auto off 0.0 n/a n/a 30.0
Gi2/0/21 auto off 0.0 n/a n/a 30.0
Gi2/0/22 auto off 0.0 n/a n/a 30.0
Gi2/0/23 auto off 0.0 n/a n/a 30.0
Gi2/0/24 off off 0.0 n/a n/a 30.0

Only two access point per Swicth stack, (C9115AXI-A), and they were working OK, previous the firmware upgrade.

Note: I performed a roll back, to the previous firmware version, the one working OK before the change, but now the problem persist 

[balaji.bandi]

what port AP connected before the upgrade took place ? ( gig1/0/1 and 2/01 ?)

can you also share show post (output)

9. ILPOWER POWER DENY

%ILPOWER-5-IEEE_DISCONNECT: Interface Gi1/0/1: PD removed
%ILPOWER-7-DETECT: Interface Gi1/0/1: Power Device detected: IEEE PD
%ILPOWER-5-ILPOWER_POWER_DENY: Interface Gi1/0/1: inline power denied. Reason: insufficient power

This error means that there is not enough power that remains in the switch to supply to the Power over Ethernet (PoE) port.

This is likely due to total inline power greater than available power. Verify power budgeting. Install more power supplies if needed. Adjustment of power supply redundancy from redundant to combined can also help. For stacked systems, stack power can be considered to pool total power across stacks.

https://www.cisco.com/c/en/us/support/docs/switches/catalyst-9200-series-switches/215636-troubleshooting-power-over-ethernet-poe.html

[Leo Laohoo]

Upgrade to 17.9.5 and try again.