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ore switch high CPU Utilization problem


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#1 ANILSHARMA

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Posted 17 September 2013 - 05:12 PM

HI all
 
we are facing core switch high CPU  Utilization problem pls help me.
 
 
Sep 15 16:38:47: %SYS-1-CPURISINGTHRESHOLD: Threshold: Total CPU Utilization(Total/Intr): 83%/1%, Top 3 processes(Pid/Util):  52/65%, 51/5%, 104/5%
Sep 15 16:40:12: %SYS-1-CPUFALLINGTHRESHOLD: Threshold: Total CPU Utilization(Total/Intr) 20%/0%.
Sep 15 17:28:02: %C4K_EBM-4-HOSTFLAPPING: Host 00:0C:29:60:42:BF in vlan 180 is moving from port Gi2/6 to port Gi5/4
Sep 15 18:36:51: %C4K_EBM-4-HOSTFLAPPING: Host 00:0C:29:0A:40:7B in vlan 180 is moving from port Gi3/4 to port Gi2/5
Sep 15 18:37:07: %C4K_EBM-4-HOSTFLAPPING: Host 00:0C:29:0A:40:7B in vlan 180 is moving from port Gi2/5 to port Gi3/4
Sep 15 19:07:55: %C4K_EBM-4-HOSTFLAPPING: Host D4:BE:D9:AD:AA:15 in vlan 180 is moving from port Gi2/5 to port Gi5/4
Sep 15 19:07:55: %C4K_EBM-4-HOSTFLAPPING: Host D4:BE:D9:AD:AA:15 in vlan 180 is moving from port Gi5/4 to port Gi2/5

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#2 MarkinManchester

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Posted 18 September 2013 - 04:54 AM

have you looked to see which process's they are?


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#3 ANILSHARMA

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Posted 18 September 2013 - 01:37 PM

                                   %CPU   %CPU    RunTimeMax   Priority  Average %CPU  Total
                                   Target  Actual   Target Actual   Fg   Bg 5Sec Min Hour  CPU
K2CpuMan Review       30.00  58.06      30          52  100  500   14  12   11  1989:57
 
sh processes cpu sorted
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process 
  51   118287624 304837227        388 10.23% 12.41% 11.84%   0 Cat4k Mgmt HiPri 
  52   105712696  71551310       1477  5.91% 20.32% 13.22%   0 Cat4k Mgmt LoPri 

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#4 Cromac

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Posted 20 September 2013 - 07:57 PM

Hi,

 

what is the source of that MAC flaps in the log? L2 loop?

 

Cromac


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#5 0wn3d

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Posted 14 October 2013 - 08:28 PM

Hi,

 

Could you please provide the following output?

 

show ver

show run int Gi2/5

show run int Gi3/4

show int | I ther|drop|error

show proc cpu | e 0.00

show proc cpu hist

show spanning-tr

show run | i port

###if you are using cdp###

show cdp neigh detail

 

are the devices connected to Gi2/5 and Gi3/4 other switches/routers? Could you please provide a sample topology (even if it is just written to explain the topology)?

 

It's all too convenient that the issues are all occurring on vlan 180, I also think that you're looking at a spanning-tree loop. Could you please provide the following from the devices that are connected to Gi2/5 and Gi3/4 (if they are switching devices)?

 

show ver

show run | i bpdu|span|port

show log

show proc cpu | e 0.00

 

### run a show run on the interfaces that are connected to the problematic switch. ###

 

Thanks

 

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