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4500 Catalyst high cpu utilization

Joseph08
Level 1
Level 1

‎10-23-2018 10:02 PM - edited ‎03-08-2019 04:27 PM

Hi Guys,

 

Need help on our issue that we are getting high cpu utilization on two of our 4500 switches. Core 2 is almost the same. Please see attached file. Appreciate you help in advance,

 

show platform cpu packet buffered | i Src
Eth: Src A0:48:1C:8B:3D:CD Dst 33:33:FF:A7:9F:9E Type/Len 0x86DD
Eth: Src 64:51:06:32:D8:84 Dst 33:33:FF:A7:9F:9E Type/Len 0x86DD
Eth: Src A0:48:1C:8B:3F:FB Dst 33:33:FF:A7:9F:9E Type/Len 0x86DD
Eth: Src 64:51:06:32:D8:84 Dst 33:33:FF:A7:9F:9E Type/Len 0x86DD
Eth: Src A0:48:1C:8B:3D:CD Dst 33:33:FF:A7:9F:9E Type/Len 0x86DD
Eth: Src A0:48:1C:8B:3F:FB Dst 33:33:FF:A7:9F:9E Type/Len 0x86DD
Eth: Src A0:48:1C:8B:3D:CD Dst 33:33:FF:A7:9F:9E Type/Len 0x86DD
Eth: Src A0:48:1C:8B:3F:FB Dst 33:33:FF:A7:9F:9E Type/Len 0x86DD
Eth: Src A0:48:1C:8B:3D:CD Dst 33:33:FF:A7:9F:9E Type/Len 0x86DD
Eth: Src A0:48:1C:8B:3D:CD Dst 33:33:FF:A7:9F:9E Type/Len 0x86DD
Eth: Src 64:51:06:32:D8:84 Dst 33:33:FF:A7:9F:9E Type/Len 0x86DD

 

show processes cpu
CPU utilization for five seconds: 99%/0%; one minute: 99%; five minutes: 99%

Packets Dropped In Processing Overall

Total                5 sec avg 1 min avg 5 min avg 1 hour avg
-------------------- --------- --------- --------- ----------
             1171234         0         0         0          0

Packets Dropped In Processing by CPU event

Event             Total                5 sec avg 1 min avg 5 min avg 1 hour avg
----------------- -------------------- --------- --------- --------- ----------
Sa Miss                        1171184         0         0         0          0
Input Acl Fwd                       50         0         0         0          0

Packets Dropped In Processing by Priority

Priority          Total                5 sec avg 1 min avg 5 min avg 1 hour avg
----------------- -------------------- --------- --------- --------- ----------
Normal                              41         0         0         0          0
Medium                         1171184         0         0         0          0
High                                 9         0         0         0          0

Packets Dropped In Processing by Reason

Reason             Total                5 sec avg 1 min avg 5 min avg 1 hour avg
------------------ -------------------- --------- --------- --------- ----------
SrcAddrTableFilt                      5         0         0         0          0
STPDrop                              97         0         0         0          0
Tx Mode Drop                    1171132         0         0         0          0

Total packet queues 64

Packets Received by Packet Queue

Queue                  Total           5 sec avg 1 min avg 5 min avg 1 hour avg
---------------------- --------------- --------- --------- --------- ----------
Input ACL fwd(snooping)       539366283      1245      1165       966        733
L2 bridge to CPU, 0            9827744         0         0         0          0
Host Learning                  7783851         0         0         0          0
L2 Control                    66156096         9         0         0          0
L2 router to CPU, 7               3285         0         0         0          0
L3 Fwd, 7                            1         0         0         0          0
L3 Receive, 7                  8588651         1         0         0          0

Packets Dropped by Packet Queue

Queue                  Total           5 sec avg 1 min avg 5 min avg 1 hour avg
---------------------- --------------- --------- --------- --------- ----------
Input ACL fwd(snooping)       119265104       918       840       668        152

Packets Transmitted from CPU per Output Interface

Interface              Total           5 sec avg 1 min avg 5 min avg 1 hour avg
---------------------- --------------- --------- --------- --------- ----------
Gi2/1                            11486       788        99         0          0
Gi2/44                           11486       788        99         0          0
Gi3/18                           11486       788        99         0          0
Gi3/19                              21         0         0         0          0
Gi3/20                           11486       788        99         0          0
Gi3/21                              21         0         0         0          0
Gi3/22                           11486       788        99         0          0
Gi3/23                              21         0         0         0          0
Gi3/24                           11486       788        99         0          0
Gi3/26                           11486       788        99         0          0
Gi3/27                              21         0         0         0          0
Gi3/28                           11486       788        99         0          0
Gi3/29                              21         0         0         0          0
Gi3/30                           11486       788        99         0          0
Gi3/31                              21         0         0         0          0
Gi3/32                           11486       788        99         0          0
Gi3/33                              21         0         0         0          0
Gi3/34                           11486       788        99         0          0
Gi3/35                              21         0         0         0          0
Gi3/36                           11486       788        99         0          0
Gi3/37                              21         0         0         0          0
Gi3/38                           11486       788        99         0          0
Gi3/39                              21         0         0         0          0
Gi3/40                           11486       788        99         0          0
Gi3/41                              21         0         0         0          0
Gi3/42                           11486       788        99         0          0
Gi3/43                              21         0         0         0          0
Gi3/44                           11486       788        99         0          0
Gi3/45                              21         0         0         0          0
Gi3/46                           11486       788        99         0          0
Gi3/47                              21         0         0         0          0
Gi3/48                           11486       788        99         0          0
Gi4/1                            11486       788        99         0          0
Gi4/2                            11486       788        99         0          0
Gi4/3                            11486       788        99         0          0
Gi4/4                            11486       788        99         0          0
Gi4/5                            11486       788        99         0          0
Gi4/6                            11486       788        99         0          0
Gi4/7                            11486       788        99         0          0
Gi4/8                            11485       788        99         0          0
Gi4/9                            11486       788        99         0          0
Gi4/10                           11486       788        99         0          0
Gi4/11                           11484       788        99         0          0
Gi4/12                           11486       788        99         0          0
Gi4/13                           11486       788        99         0          0
Gi4/14                           11486       788        99         0          0
Gi4/15                           11486       788        99         0          0
Gi4/16                           11486       788        99         0          0
Gi4/17                           11486       788        99         0          0
Gi4/18                           11486       788        99         0          0
Gi4/19                           11486       788        99         0          0
Gi4/20                           11486       788        99         0          0
Gi4/21                           11486       788        99         0          0
Gi4/22                           11486       788        99         0          0
Gi4/23                           11486       788        99         0          0
Gi4/24                           11486       788        99         0          0
Gi4/25                           11486       788        99         0          0
Gi4/26                           11486       788        99         0          0
Gi4/27                           11486       788        99         0          0
Gi4/28                           11486       788        99         0          0
Gi4/29                           11486       788        99         0          0
Gi4/30                           11486       788        99         0          0
Gi4/31                           11486       788        99         0          0
Gi4/32                           11486       788        99         0          0
Gi4/33                           11486       788        99         0          0
Gi4/34                           11486       788        99         0          0
Gi4/35                           11486       788        99         0          0
Gi4/36                           11486       788        99         0          0
Gi4/37                           11486       788        99         0          0

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0 Helpful
8 Replies 8

Leo Laohoo
Hall of Fame
Hall of Fame

‎10-23-2018 10:44 PM

Post the complete output to the following commands:
1. sh version; and
2. sh proc cpu sort | ex 0.00
0 Helpful

Joseph08
Level 1
Level 1
In response to Leo Laohoo

‎10-24-2018 01:09 AM

yep we are still waiting for the issue to re-occur to have better output, This an intermittent issue also.
0 Helpful

Georg Pauwen
VIP
VIP

‎10-24-2018 01:06 AM

Hello,

 

post the output of:

 

show proc cpu sorted | ex 0.00

0 Helpful

Joseph08
Level 1
Level 1
In response to Georg Pauwen

‎10-24-2018 01:12 AM

This is an intermittent issue we are still waiting to re-occur. Once we get the information we will post it. Thanks
0 Helpful

Georg Pauwen
VIP
VIP
In response to Joseph08

‎10-24-2018 01:22 AM

Hello,

 

if possible, check if this occurs when there is high traffic volume, or when users are doing specific things. I know that sounds a bit vague, but in general, these CPU spikes are caused by something particular...

0 Helpful

Joseph08
Level 1
Level 1
In response to Georg Pauwen

‎10-24-2018 01:37 AM

We will check the traffic and keep you updated. We need to monitor the MAC address on the debug packet cause does PC are the only mac address there. Not sure what does PC doing we are still observing it. It very hard for us to troubleshoot since its very intermittent.
0 Helpful

Joseph08
Level 1
Level 1
In response to Georg Pauwen

‎11-11-2018 07:21 PM

Hi guys the high cpu utilization re-occured again. Please see show info on the attached files.

Show info.zip
0 Helpful
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