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Cat9300 stack of switches might encounter a rare condition upon IOS upgrade from 16.09.02 to 16.09.03 in INSTALL mode when STACK-POWER cables are connected but STACK-POWER ports configured as STANDALONE. Anything powered by PoE will go down with power deny and error log: 000589: *Oct 15 16:02:35.337 UTC: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi2/0/13: PD removed 000590: *Oct 15 16:02:35.399 UTC: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi2/0/14: PD removed 000591: *Oct 15 16:02:40.717 UTC: %ILPOWER-7-DETECT: Interface Gi2/0/13: Power Device detected: Cisco PD 000592: *Oct 15 16:02:40.718 UTC: %ILPOWER-5-ILPOWER_POWER_DENY: Interface Gi2/0/13: inline power denied. Reason: insufficient power 000593: *Oct 15 16:02:40.779 UTC: %ILPOWER-7-DETECT: Interface Gi2/0/14: Power Device detected: Cisco PD 000594: *Oct 15 16:02:40.780 UTC: %ILPOWER-5-ILPOWER_POWER_DENY: Interface Gi2/0/14: inline power denied. Reason: insufficient power 000595: *Oct 15 16:02:53.610 UTC: %PLATFORM_FEP-1-FRU_PS_SIGNAL_FAULTY: Switch 2: signal on power supply B is faulty 000596: *Oct 15 16:02:55.718 UTC: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi2/0/13: PD removed 000597: *Oct 15 16:02:55.780 UTC: %ILPOWER-5-IEEE_DISCONNECT: Interface Gi2/0/14: PD removed 000598: *Oct 15 16:03:01.149 UTC: %ILPOWER-7-DETECT: Interface Gi2/0/13: Power Device detected: Cisco PD 000599: *Oct 15 16:03:01.150 UTC: %ILPOWER-7-DETECT: Interface Gi2/0/14: Power Device detected: Cisco PD 000600: *Oct 15 16:03:01.657 UTC: %ILPOWER-5-POWER_GRANTED: Interface Gi2/0/13: Power granted 000601: *Oct 15 16:03:02.608 UTC: %ILPOWER-5-POWER_GRANTED: Interface Gi2/0/14: Power granted F340.26.03-9300-11#show 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 static errdisable 0.0 n/a n/a 15.0 Gi1/0/2 auto off 0.0 n/a n/a 60.0 Gi1/0/3 auto off 0.0 n/a n/a 60.0 Gi1/0/4 auto off 0.0 n/a n/a 60.0 Gi1/0/5 auto off 0.0 n/a n/a 60.0 Gi1/0/6 auto off 0.0 n/a n/a 60.0 Gi1/0/7 auto off 0.0 n/a n/a 60.0 Gi1/0/8 static off 0.0 n/a n/a 60.0 Gi1/0/9 auto off 0.0 n/a n/a 60.0 Gi1/0/10 auto off 0.0 n/a n/a 60.0 Gi1/0/11 auto off 0.0 n/a n/a 60.0 Gi1/0/12 auto off 0.0 n/a n/a 60.0 Gi1/0/13 auto power-deny 0.0 n/a n/a 60.0 <<<<< Both Switches Down Gi1/0/14 auto power-deny 0.0 n/a n/a 60.0 <<<<< Both Switches Down Gi1/0/15 auto off 0.0 n/a n/a 60.0 Gi1/0/16 auto off 0.0 n/a n/a 60.0 Gi1/0/17 auto off 0.0 n/a n/a 60.0 Gi1/0/18 auto off 0.0 n/a n/a 60.0 Gi1/0/19 auto off 0.0 n/a n/a 60.0 Gi1/0/20 auto off 0.0 n/a n/a 60.0 Gi1/0/21 auto off 0.0 n/a n/a 60.0 Gi1/0/22 auto off 0.0 n/a n/a 60.0 Gi1/0/23 static off 0.0 n/a n/a 30.0 Gi1/0/24 auto off 0.0 n/a n/a 60.0 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 off 0.0 n/a n/a 60.0 Gi2/0/2 auto off 0.0 n/a n/a 60.0 Gi2/0/3 auto off 0.0 n/a n/a 60.0 Gi2/0/4 auto off 0.0 n/a n/a 60.0 Gi2/0/5 auto off 0.0 n/a n/a 60.0 Gi2/0/6 auto off 0.0 n/a n/a 60.0 Interface Admin Oper Power Device Class Max (Watts) --------- ------ ---------- ------- ------------------- ----- ---- Gi2/0/7 auto off 0.0 n/a n/a 60.0 Gi2/0/8 auto off 0.0 n/a n/a 60.0 Gi2/0/9 auto off 0.0 n/a n/a 60.0 Gi2/0/10 auto off 0.0 n/a n/a 60.0 Gi2/0/11 auto off 0.0 n/a n/a 60.0 Gi2/0/12 auto off 0.0 n/a n/a 60.0 Gi2/0/13 auto power-deny 0.0 n/a n/a 60.0 <<<<< Both Switches Down Gi2/0/14 auto power-deny 0.0 n/a n/a 60.0 <<<<< Both Switches Down Gi2/0/15 auto off 0.0 n/a n/a 60.0 Gi2/0/16 auto off 0.0 n/a n/a 60.0 Gi2/0/17 auto off 0.0 n/a n/a 60.0 Gi2/0/18 auto off 0.0 n/a n/a 60.0 Gi2/0/19 auto off 0.0 n/a n/a 60.0 Gi2/0/20 auto off 0.0 n/a n/a 60.0 Gi2/0/21 auto off 0.0 n/a n/a 60.0 Gi2/0/22 auto off 0.0 n/a n/a 60.0 Gi2/0/23 auto off 0.0 n/a n/a 60.0 Gi2/0/24 auto off 0.0 n/a n/a 60.0
Cat9300 stack of switches IOS upgrade from 16.09.02 to 16.09.03 in INSTALL mode STACK-POWER cables are connected STACK-POWER ports configured as STANDALONE
-Power Cycle -If device equipped with two power supply in my test I unplugged one cable wait for 10sec plugged back in and PoE will turn back on -If device had only one PS in my case I add another one and once power apply PoE turn back on
To prevent this issue if STACK-POWER cables are installed make sure that STACK-POWER ports are NOT in STANDALONE mode WRONG: F340.26.03-9300-11#sh stack-power Power Stack Stack Stack Total Rsvd Alloc Sw_Avail Num Num Name Mode Topolgy Pwr(W) Pwr(W) Pwr(W) Pwr(W) SW PS -------------------- ------ ------- ------ ------ ------ ------ ----- ---- Powerstack-1 SP-PS Stndaln 2200 0 349 1851 1 2 Powerstack-11 SP-PS Stndaln 2200 0 247 1953 1 2 CORRECT F340.26.03-9300-11#sh stack-power Power Stack Stack Stack Total Rsvd Alloc Sw_Avail Num Num Name Mode Topolgy Pwr(W) Pwr(W) Pwr(W) Pwr(W) SW PS -------------------- ------ ------- ------ ------ ------ ------ ----- ---- Powerstack-1 SP-PS Ring 4400 30 596 3774 2 4 This seems to only affect upgrade from 16.9.2 to 16.9.3 in other words upgrade from 16.9.2 to 16.9.4 or 16.9.3 to 16.9.4 replicated in the lab was fine.