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High cpu on 6500 switch .

Angus Bishop
Level 1
Level 1

Hi ,

I am getting high cpu on 6500 swich running with SUP2 .

Please find the process cpu output .

****************** show proc cpu ******************


CPU utilization for five seconds:  97.03%
                      one minute:  97.08%
                    five minutes:  97.02%

PID Runtime(ms) Invoked    uSecs    5Sec    1Min    5Min    TTY Process
--- ----------- ---------- -------- ------- ------- ------- --- ---------------
1   335581512   0          0          2.97%   2.92%   2.98% -2  Kernel and Idle
2   6           128        1000       0.00%   0.00%   0.00% -2  Flash MIB Updat
3   10468247    8763359    192000     0.98%   0.00%   0.00% -2  SynConfig     
4   1694917     1210299    3000       0.57%   0.00%   0.00% -2  Statuspoll    
5   341501      2798181    2000       0.19%   0.00%   0.00% -2  PwrDevMsgUpd  
6   14206       199244     1000       0.00%   0.00%   0.00% -2  StatusPoll 5s 
7   608274      7906       4055000   33.26%  36.69%  36.93% 0   show_command  
8   7           2          7000       0.00%   0.00%   0.00% -2  SecurityRx    
9   3896        41911      1000       0.00%   0.00%   0.00% -2  SWPoll64bCnt  
10  71723       980534     6000       0.00%   0.00%   0.00% -2  Earl          
11  7194        100106     1000       0.00%   0.00%   0.00% -2  ProtocolFilter
12  26          36         1000       0.00%   0.00%   0.00% -2  connecthelper 
13  26          17         3000       0.00%   0.00%   0.00% -2  telnetd       
14  738         33         28000      0.00%   0.00%   0.00% -2  sshd          
15  74096       33664      133000     0.00%   0.00%   0.00% -2  ssh_key       
16  3968        8353       30000      0.00%   0.00%   0.00% -2  ssh_flush     
18  0           1          0          0.00%   0.00%   0.00% -2  RMON AlarmTimer
19  1           1          1000       0.00%   0.00%   0.00% -2  llcSSTPFlood  
20  8047135     141093989  2000       0.60%   0.00%   0.00% -2  gsgScpAggregati
21  785525      20954      54000      0.00%   0.00%   0.00% -2  sntp_recd     
22  13510       20815      2000       0.00%   0.00%   0.00% -2  sntp_xmitd    
23  207764      352508     110000     0.20%   0.00%   0.00% -2  cdpd          
24  8370416     996903     31000      0.45%   0.00%   0.00% -2  cdpdtimer     
25  13922130    1028413    19000      2.03%   2.92%   2.98% -2  SptTimer      
26  27626027    5074073    84000      2.70%   3.84%   3.96% -2  SptBpduRx     
27  182456520   3601477    97000     36.64%  26.15%  26.81% -2  SptBpduTx     
28  276977      980050     9000       0.40%   0.00%   0.00% -2  VtpTimer      
29  654942      7105472    2000       0.80%   0.00%   0.00% -2  ProtocolTimer 
30  77585       100504     13000      0.00%   0.00%   0.00% -2  DTP_Rx        
31  47991       83637      28000      0.40%   0.00%   0.00% -2  EthChnlRx     
32  520485      104990     93000      0.00%   0.00%   0.00% -2  EthChnlConfig 
33  551771      8449879    2000       0.60%   0.00%   0.00% -2  sptHelper     
34  6084        2924       3000       0.00%   0.00%   0.00% -2  sptTraps      
35  6708        100102     1000       0.00%   0.00%   0.00% -2  ciscoRmonTimer
36  5683        100101     1000       0.00%   0.00%   0.00% -2  ciscoUsrHistory
37  0           1          0          0.00%   0.00%   0.00% -2  rmonMediaIndep
38  12          7          2000       0.00%   0.00%   0.00% -2  SnmpTraps     
39  2750562     37275848   2000       0.80%   0.00%   0.00% -2  memPoolMain   
40  25350       2521       42000      0.00%   0.00%   0.00% -2  Acct Send Bkg 
41  1033        132        49000      0.00%   0.00%   0.00% -2  StopRecordAcctT
43  1           1          1000       0.00%   0.00%   0.00% -2  l2t_server    
45  34325       71940      8000       0.00%   0.00%   0.00% -2  SysLogTask    
46  60445       979905     1000       0.00%   0.00%   0.00% -2  pinggateA     
47  6198        3371       3000       0.00%   0.00%   0.00% -2  ErrDisable Time
48  3850005     52294965   2000       0.20%   0.00%   0.00% -2  Authenticator_S
49  1382        4746       63000      0.00%   0.00%   0.00% -2  dot1x_rx      
50  126403      2062197    1000       0.20%   0.00%   0.00% -2  Backend_Rx    
51  3508012     43187374   2000       0.00%   0.00%   0.00% -2  Backend_SM    
52  118768      2061840    1000       0.40%   0.00%   0.00% -2  Radius Acct Pro
143 13604608    141091684  74000      0.80%   0.00%   0.00% 0   Console       
144 36163       140948     205000     0.00%   0.00%   0.00% -2  snmpdm        
145 2346057     179285     721000     0.22%   0.00%   0.00% -2  VtpRx         
146 176036      336641     343000     0.00%   0.00%   0.00% -2  THREAD        
193 79797113    55781774   12061      8.61%   8.34%   8.20% 0   Packet forwardi
194 74278078    25403064   9133       5.78%   6.09%   6.15% 0   Switching overh
195 86765126    30466908   26614      8.85%   8.86%   8.72% 0   Admin overhead

Here the process SptBpduTx is taking more CPU .

Could anyone please help me in getting it resolved  .

Thanks in advance ..

Regards

Ben

2 Replies 2

Hi,

Can you check the "ip cef" is enabled?

Aman

Peter Paluch
Cisco Employee
Cisco Employee

Hi Angus,

Please follow the instructions in the following document:

http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a00804916e0.shtml

Also verify what is the process consuming the most part of CPU time using the command show processes cpu sorted command (if that is available).

Best regards,

Peter