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High CPU On Cisco 837 Router

hi experts,

i checked there's a high CPU usage on this router but logs showed no indication on which process took most of the CPU. we're running site-to-site VPN on this router. not sure if this router can handle or support this feature. i'm also thinking this might be an IOS bug. kindly advise. thanks!

ROUTER#sh proc cpu
CPU utilization for five seconds: 100%/100%; one minute: 100%; five minutes: 100%
PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
   1           0         1          0  0.00%  0.00%  0.00%   0 Chunk Manager   
   2           0      1245          0  0.00%  0.00%  0.00%   0 Load Meter      
   3          52       639         81  0.00%  0.00%  0.00%   0 CRYPTO IKMP IPC 
   4         168       183        918  0.00%  0.00%  0.00%   2 Virtual Exec    
   5      108704      5856      18562  0.00%  0.00%  0.00%   0 Check heaps     
   6           0         1          0  0.00%  0.00%  0.00%   0 Pool Manager    
   7           0         2          0  0.00%  0.00%  0.00%   0 Timers          
   8           0         2          0  0.00%  0.00%  0.00%   0 Serial Backgroun
   9           0         1          0  0.00%  0.00%  0.00%   0 AAA high-capacit
  10         140       305        459  0.00%  0.00%  0.00%   0 ARP Input       
  11           0         2          0  0.00%  0.00%  0.00%   0 DDR Timers      
  12           0         2          0  0.00%  0.00%  0.00%   0 ATM Idle Timer  
  13           8         2       4000  0.00%  0.00%  0.00%   0 Entity MIB API  
  14           0         1          0  0.00%  0.00%  0.00%   0 SERIAL A'detect 
  15           0      6213          0  0.00%  0.00%  0.00%   0 GraphIt         
  16           0         2          0  0.00%  0.00%  0.00%   0 Dialer event    
  17           0         1          0  0.00%  0.00%  0.00%   0 Critical Bkgnd  
  18          32      1280         25  0.00%  0.00%  0.00%   0 Net Background  
  19           0        17          0  0.00%  0.00%  0.00%   0 Logger          
  20           8      6212          1  0.00%  0.00%  0.00%   0 TTY Background  
  21          16      6222          2  0.00%  0.00%  0.00%   0 Per-Second Jobs 
  22          24     19901          1  0.00%  0.00%  0.00%   0 LED Timers      
  23           0         2          0  0.00%  0.00%  0.00%   0 AUX             
  24         504      2499        201  0.00%  0.00%  0.00%   0 ATM Periodic    
  25           4         6        666  0.00%  0.00%  0.00%   0 ATM ARP INPUT   
  26           0         2          0  0.00%  0.00%  0.00%   0 ATM OAM Input   
  27           0         2          0  0.00%  0.00%  0.00%   0 ATM OAM TIMER   
  28        2424        11     220363  0.00%  0.00%  0.00%   0 AAL Coalesce    
  29          32       364         87  0.00%  0.00%  0.00%   0 Net Input       
  30           0      1246          0  0.00%  0.00%  0.00%   0 Compute load avg
  31        2476       105      23580  0.00%  0.00%  0.00%   0 Per-minute Jobs 
  32         336      3480         96  0.00%  0.00%  0.00%   0 DSL State Machin
  33           0         2          0  0.00%  0.00%  0.00%   0 AAA Server      
  34           0         1          0  0.00%  0.00%  0.00%   0 AAA ACCT Proc   
  35           0         1          0  0.00%  0.00%  0.00%   0 ACCT Periodic Pr
  36           4         2       2000  0.00%  0.00%  0.00%   0 AAA Dictionary R
  37        5600      6666        840  0.00%  0.00%  0.00%   0 IP Input        
  38           0         1          0  0.00%  0.00%  0.00%   0 ICMP event handl
  40           0         3          0  0.00%  0.00%  0.00%   0 PPP Hooks       
  41           0         1          0  0.00%  0.00%  0.00%   0 VPDN call manage
  42           0         3          0  0.00%  0.00%  0.00%   0 PPPOE discovery 
  43         128    381655          0  0.00%  0.00%  0.00%   0 PPPOE background
  44           0         1          0  0.00%  0.00%  0.00%   0 SSS Manager     
  45           0       831          0  0.00%  0.00%  0.00%   0 SSS Test Client 
  46          52       137        379  0.00%  0.00%  0.00%   0 IP Background   
  47          20       115        173  0.00%  0.00%  0.00%   0 IP RIB Update   
  48           0         2          0  0.00%  0.00%  0.00%   0 PPP IP Route    
  49           4         2       2000  0.00%  0.00%  0.00%   0 PPP IPCP        
  50           0        18          0  0.00%  0.00%  0.00%   0 TCP Timer       
  51           4         3       1333  0.00%  0.00%  0.00%   0 TCP Protocols   
  52           0         1          0  0.00%  0.00%  0.00%   0 RARP Input      
  53          48        40       1200  0.00%  0.00%  0.00%   0 DHCPD Receive   
  54           0         1          0  0.00%  0.00%  0.00%   0 Socket Timers   
  55           0         2          0  0.00%  0.00%  0.00%   0 HTTP CORE       
  56           0       104          0  0.00%  0.00%  0.00%   0 IP Cache Ager   
  57           8       110         72  0.00%  0.00%  0.00%   0 Adj Manager     
  58           4         2       2000  0.00%  0.00%  0.00%   0 PPP Bind        
  59           0         2          0  0.00%  0.00%  0.00%   0 Dialer Forwarder
  60           0         2          0  0.00%  0.00%  0.00%   0 PPP SSS         
  61           0         2          0  0.00%  0.00%  0.00%   0 SNMP Timers     
  62           0         2          0  0.00%  0.00%  0.00%   0 ILMI Input      
  63           0         2          0  0.00%  0.00%  0.00%   0 ILMI Request    
  64           0         2          0  0.00%  0.00%  0.00%   0 ILMI Response   
  65         188      3088         60  0.00%  0.00%  0.00%   0 ILMI Timer Proce
  66          44         4      11000  0.00%  0.00%  0.00%   0 ATM PVC Discover
  67           0         1          0  0.00%  0.00%  0.00%   0 Inspect Timer   
  68          20       105        190  0.00%  0.00%  0.00%   0 URL filter proc 
  69           0         1          0  0.00%  0.00%  0.00%   0 Authentication P
  70           0         1          0  0.00%  0.00%  0.00%   0 IDS Timer       
  71           0         2          0  0.00%  0.00%  0.00%   0 LOCAL AAA       
  72           0         2          0  0.00%  0.00%  0.00%   0 ENABLE AAA      
  73           0         2          0  0.00%  0.00%  0.00%   0 LINE AAA        
  74           0         2          0  0.00%  0.00%  0.00%   0 TPLUS           
  75           0         2          0  0.00%  0.00%  0.00%   0 Crypto Support  
  76           0         3          0  0.00%  0.00%  0.00%   0 Crypto CA       
  77           0         1          0  0.00%  0.00%  0.00%   0 Crypto SSL      
  78           8       103         77  0.00%  0.00%  0.00%   0 Crypto ACL      
  79       29748      3222       9232  0.00%  0.00%  0.00%   0 Crypto IKMP     
  80        2296       207      11091  0.00%  0.00%  0.00%   0 IPSEC key engine
  81           0         1          0  0.00%  0.00%  0.00%   0 IPSEC manual key
  82           0         1          0  0.00%  0.00%  0.00%   0 CRYPTO QoS proce
  83        4548      2845       1598  0.00%  0.00%  0.00%   0 Encrypt Proc    
  84           0         4          0  0.00%  0.00%  0.00%   0 Key Proc        
  85           4         2       2000  0.00%  0.00%  0.00%   0 AAA SEND STOP EV
  86           0         2          0  0.00%  0.00%  0.00%   0 IpSecMibTopN    
  87           0         1          0  0.00%  0.00%  0.00%   0 VPDN Scal       
  88           0       104          0  0.00%  0.00%  0.00%   0 SAA Event Proces
  89         248      2188        113  0.00%  0.00%  0.00%   0 IP NAT Ager     
  90          36        82        439  0.00%  0.00%  0.00%   0 IP SNMP         
  91          24        41        585  0.00%  0.00%  0.00%   0 PDU DISPATCHER  
  92         132        43       3069  0.00%  0.00%  0.00%   0 SNMP ENGINE     
  93           0         1          0  0.00%  0.00%  0.00%   0 SNMP Traps      
  94           0        52          0  0.00%  0.00%  0.00%   0 DHCPD Timer     
  95           0      1753          0  0.00%  0.00%  0.00%   0 DHCPD Database

------------

ROUTER#sh ver 
Cisco Internetwork Operating System Software
IOS (tm) C837 Software (C837-K9O3Y6-M), Version 12.2(11)YV, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
Synched to technology version 12.2(13.1u)T
TAC Support: http://www.cisco.com/tac
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Mon 20-Jan-03 22:39 by ealyon
Image text-base: 0x800131E8, data-base: 0x80A2C6C8

ROM: System Bootstrap, Version 12.2(8r)YN, RELEASE SOFTWARE (fc1)
ROM: C837 Software (C837-K9O3Y6-M), Version 12.2(11)YV, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

KORCHINA-SG-GW uptime is 1 hour, 46 minutes
System returned to ROM by power-on
System image file is "flash:c837-k9o3y6-mz.122-11.YV.bin"

CISCO C837 (MPC857DSL) processor (revision 0x200) with 29492K/3276K bytes of memory.
Processor board ID AMB070903BQ (479383020), with hardware revision 0000
CPU rev number 7
Bridging software.
1 Ethernet/IEEE 802.3 interface(s)
1 ATM network interface(s)
128K bytes of non-volatile configuration memory.
8192K bytes of processor board System flash (Read/Write)
2048K bytes of processor board Web flash (Read/Write)

Configuration register is 0x2102

1 REPLY
Hall of Fame Super Gold

Re: High CPU On Cisco 837 Router

IOS vulnerable to IOS Heap-based Overflow Vulnerability in System Timers exploitation.  Migrate to 12.3(14)T4 or later.

http://www.cisco.com/en/US/partner/products/products_security_advisory09186a008055ef31.shtml

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