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C9500 fan loud noise problem

lhsu12001
Level 1
Level 1

hello,

Hello. I bought c9500-24y4c-a model.

firmware: 16.12.3

config: factory default, no connect port

 

our problem is fan operation noise is too loud.

I know that it only makes a loud noise when booting, and it becomes quiet when booting is complete.

I tried replacing power unit and device. However, it was not resolved.

fan and cpu status, no problem.

 

below is power and cpu status

 

switch#show power
Power Fan States
Supply Model No Type Capacity Status 0 1
------ -------------------- ---- -------- --------- -----------
PS0 C9K-PWR-650WAC-R AC 650 W fail N/A N/A
PS1 C9K-PWR-650WAC-R AC 650 W ok good N/A

Fan Fan States
Tray Status 0 1 2 3
------ ---------- -----------------------
FM0 ok good good good good
FM1 ok good good good good

 

switch#sh processes cpu
CPU utilization for five seconds: 0%/0%; one minute: 0%; five minutes: 0%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
1 0 32 0 0.00% 0.00% 0.00% 0 Chunk Manager
2 1008 4199 240 0.00% 0.00% 0.00% 0 Load Meter
3 0 1 0 0.00% 0.00% 0.00% 0 PKI Trustpool
4 26 13 2000 0.00% 0.00% 0.00% 0 RF Slave Main Th
5 0 1 0 0.00% 0.00% 0.00% 0 Retransmission o
6 0 1 0 0.00% 0.00% 0.00% 0 IPC ISSU Dispatc
7 0 1 0 0.00% 0.00% 0.00% 0 RO Notify Timers
8 4 700 5 0.00% 0.00% 0.00% 0 VIDB BACKGD MGR
9 5549 2848 1948 0.00% 0.02% 0.00% 0 Check heaps
10 25 350 71 0.00% 0.00% 0.00% 0 Pool Manager
11 0 1 0 0.00% 0.00% 0.00% 0 DiscardQ Backgro

switch#sh processes memory
Processor Pool Total: 1912683576 Used: 277218336 Free: 1635465240
reserve P Pool Total: 102404 Used: 88 Free: 102316
lsmpi_io Pool Total: 6295128 Used: 6294296 Free: 832

PID TTY Allocated Freed Holding Getbufs Retbufs Process
0 0 266353288 57197320 188441600 461 13286 *Init*
0 0 584 1495600 584 0 0 *Sched*
0 0 78931104 61065920 14753096 11 7 *Dead*
0 0 0 0 658104 0 0 *MallocLite*
1 0 1307472 22672 1323528 0 0 Chunk Manager
2 0 43648 448 61144 0 0 Load Meter
3 0 0 0 53944 0 0 PKI Trustpool
4 0 20698704 103400 20455112 3 3 RF Slave Main Th
5 0 0 0 29944 0 0 Retransmission o
6 0 0 0 29944 0 0 IPC ISSU Dispatc
7 0 0 0 29944 0 0 RO Notify Timers
8 0 0 0 29944 0 0 VIDB BACKGD MGR
9 0 8832 448 38328 0 0 Check heaps
10 0 24287152 24307584 216240 51 0 Pool Manager
11 0 0 0 29944 0 0 DiscardQ Backgro
12 0 448 448 29944 0 0 Timers
13 0 0 0 17944 0 0 WATCH_AFS
14 0 0 0 29944 0 0 IOSXE heartbeat

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