Cisco Switching/Routing :: Very High CPU Utilization Core Switch 4503?

Feb 14, 2012

We  had a core switch(30 vlans) in our environment and it's noticed that  CPU utilization of the core switch is showing high during recent days. I  have checked logs and processes, but couldn't find the root cause. The  issue found only in the office hourly only(after that the cpu  utilization is idle and normal). I have already referred the following  link to troubleshoot the issue " [URL]
 
see the following outputs from the core switch
 
CPU utilization for five seconds: 99%/0%; one minute: 99%; five minutes: 99%
PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
  30   6687557041432420936        466 47.52% 47.10% 45.98%   0 Cat4k Mgmt LoPri
  55  30667074884269560256          0 45.36% 45.50% 45.85%   0 IP Input
  29  28552856922870089254          0  3.59%  3.50%  3.57%   0 Cat4k Mgmt HiPri

[code]....
 
Note: Each Invalid source mac entry in each day from same port (above is the output after clearing logs before 3 days)
  
My queries regarding the issues are following
 
1) How can we find root cause regarding the high cpu utilization?

2) Is a single invalid mac address makes the cpu highly utilized for suppressing it?

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Cisco Switching/Routing :: WS-4503 - Core Switch Having High CPU Load

Jan 13, 2012

We have two core switches in our network (Cisco WS-4503). HSRP is working as Active-Standby mode. Recently it has been found that core 1 (which is in active mode) shown high CPU load (60% - 100%). Also found that the below mentioned process takes more CPU. Our network consist of around 30 Vlans. We have already checked for the solution in Cisco website [URL]  but couldn't find exact reason. see the below outputs for core 1 switch.
 
Core1# sh processes cpu sorted
CPU utilization for five seconds: 55%/3%; one minute: 65%; five minutes: 71%PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process  30   1606933521086983644        147 24.79% 29.93% 35.85%   0 Cat4k Mgmt LoPri  29 

[Code]....

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Dec 20, 2011

I am experiencing high cpu utilization in my 4000 series core switch.
 
I checked the loggs. i saw some strange loggs.
 
Please see the below logs:

Code...

What is the "invalidsourceaddresspacket" ?
 
Is this is due to some virus attack or something?? Also one more thing this switch is the Active router in HSRP.

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Dec 13, 2011

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we have two 6513 core switches redundant to each other by using HSRP and MST. Currently we have a problem in a CPU as it's high in both cores as appeared in the following logging message:
 
1: 04/09/12 16:06:20    7/-1: MAJ, GOLD,
test_sp_rp_inband_ping[7]: diag_hit_sp_sys_limit. SP-RP Ping Test skipped. Reason(s): netint_thr_active[1].

[Code].....

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We had a core switch(4503) in our environment and recently we tried to enable syslog in the switch. But the syslog server doesnt receives all the configured level messages from the switch. Following is the only message getting in syslog server after the configuration change in switch.
 
%SYS-5-CONFIG_I: Configured from console by CWLMS onvty1
 
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Following are the logging configuration for the core switch
 
logging monitor informational
logging facility syslog
logging source-interface Vlan44

[Code]....

1) Is there any more configurations required for getting all traffic related messages, (i mean all possible messages - upto level 7 - debugging)?

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Cisco Switching/Routing :: High CPU Utilization On Switch 2960?

Feb 16, 2012

I am a new network engineer on a retail company and I am having a problem on the High utilization of my 3-stack switch 2960 only during Peak Hours of the Store Sales.
 
Note: on Peak hours, it is peaking at 90-95 %
here is the utilization after Peak hours:
4444333334444433333333333333333333333333333333333333333333

[Code]......

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i am seeing very high utilization on a random basis on the stack. and the logs indicate me that there is a pattern where there is a stack power cable shows inserted (which was never unplugged) followed by sudden spike in the utilization.
 
001018: *Mar  6 16:21:22.138: %PLATFORM_STACKPOWER-6-CABLE_EVENT: Switch 4 stack power cable 1 inserted
001019: *Mar  6 18:18:37.982: %SYS-1-CPURISINGTHRESHOLD: Threshold: Total CPU

[Code]......

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We have a problem of igh CPU Utilization in Cisco 4510R-with dual SUP V-10G modules.
 
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Sep 3, 2012

We have Cisco ME3400 switch, with configuration described below.
 
GE0/1 port is uplink:
interface GigabitEthernet0/1
description ***MATED-IUB_C&U-Plan***
port-type nni
switchport trunk allowed vlan 331,450,4085
switchport mode trunk
 
GEo/2 is configured as below:

interface GigabitEthernet0/2
description ***From NIB***
port-type nni
switchport access vlan 4085
 
[URL]
 
We have also tried Loopguard feature enabled on all ports: but after some period same problem is repeated.
 
version information is below:
Cisco IOS Software, ME340x Software (ME340x-METROIPACCESSK9-M), Version 12.2(25)SEG3, RELEASE SOFTWARE (fc2)
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Wed 25-Jul-07 22:56 by amvarma

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In my network we use all cisco 2960 switches, problem is when someone copying  4gb data or high from one switch to another switch, by that time rto (Request time out) is coming.
  
router
|
|
|

[Code]....
 
1. when user 1 copy data from server ,at that time who is in switch2 behind like user2 ,he is getting problem like when ping to default-gateway,or rto is coming and network is very slow .
 
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I see that on runnung proc cpu
 
16407    56.1%   56.5%    55.9% ios-base
 
16430    35.3%   35.2%    33.9% iprouting.iosproc  
 
the modules present
 
Mod Ports Card Type                              Model              Serial No.--- ----- -------------------------------------- ------------------ -----------  1    6  Firewall Module                        WS-SVC-FWM-1       SAD140901XA  3   16  16 port 1000mb GBIC ethernet      

[Code].....

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Core Switch = Cisco 4503
Access Switches = Cisco 3560X

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We suddenly noticed high CPU utilization on one of our 7600 routers. I output of show process CPU showed high utlization for the FM core process. I looked it up but did not find information on what this process does. [code]

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Dec 14, 2011

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action taken :
 
1st we try to connect our win 7 pc in the node which was connected to xp M/C ,, and it didnot take ip from the DHCP . ,, 2
 
2nd we ensure from the core-switch configuration and its normal with no mistake
 
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We have a Cisco 3845 router configured as a voice gateway with multi SIP trunks. But when it reachs 200 calls traffic, the CPU increase to 60-70% and caused by CCSIP_SPI_CONTROL process.

CPU utilization for five seconds: 46%/30%; one minute: 54%; five minutes: 58%
PID Runtime(ms)     Invoked      uSecs   5Sec   1Min   5Min TTY Process
377   400729448   171017979       2343  6.31% 10.71% 12.44%   0 CCSIP_SPI_CONTRO

[Code].....

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I've been looking at reported problems with our Vdeio Conferencing kit attched to a stack of 3750's (which I think is down to QoS) but this got me looking at the logs. We get a lot of high CPU utilization warnings mainly for SNMP (315), Hulc running con (95), Virtual exec (289). I understand the last two are normal, and the SNMP one is probably Cisco Works polling as it happens every 4 hours.
 
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What is Pid 296? It's not listed on the switch:
 
293       39056     18456       2116  0.00%  0.00%  0.00%   0 SpanTree Helper
294           8        73        109  0.00%  0.00%  0.00%   0 EEM Server
295           0         2          0  0.00%  0.00%  0.00%   0 EEM Policy Direc

[Code].....

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CPU utilization for five seconds: 73%/65%; one minute: 71%; five minutes: 67%
PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
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[code]....

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[Code] .......

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I am experiencing high cpu utilization in my 29501 switch. see the copied sh process cpu output.
 
CPU utilization for five seconds: 99%/95%; one minute: 89%; five minutes: 37%
PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
1           0         2          0  0.00%  0.00%  0.00%   0 Chunk Manager

[Code].....

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I am looking at the utilization on a Catalyst 3560-E.  I am running a test with eight 1 GIGE links RXing at 95 % utilization.  All of the traffic is going to a TenGigE port.  The device on the TenGigE port is echoing back all of the traffic received, so the 1 GIG links are TXing at 95% as well.When I do a "show controllers utilization", the port utilization numbers are correct, but the fabric utilization is higher than I would expect.  The fabric should be 128 gigbits / second in this switch, and there is 7.6 gigabits TX/RX to the ten gig port.  The fabric utilization is at 49%.  I would expect 7.6 / 128 = 5.9% or possible double that. [code]

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