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High CPU Utilization on cisco 3750 Stack

Dear Experts

Recently we have install windows 2012 active direcoty on our network. The network consisted with cisco devices. Cisco 3750 act as the core stack in the network.  With the installtion of Active directory the 3750 stack shows high cpu utilization. it is about 85%.

Version as follows

Switch   Ports  Model              SW Version              SW Image

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

*    1   12     WS-C3750G-12S      12.2(35)SE5             C3750-IPSERVICES-M

     2   28     WS-C3750G-24TS-1U  12.2(35)SE5             C3750-IPSERVICES-M

CPU utilization for five seconds: 82%/59%; one minute: 83%; five minutes: 86%

PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process

  71    25391368 108175695        234  7.83%  8.69%  9.40%   0 HLFM address lea

122   118643138   2876295      41248  6.87%  6.84%  6.52%   0 HL3U bkgrd proce

182         287       178       1612  1.11%  0.20%  0.04%   1 Virtual Exec

176    32508366  53084744        612  0.79%  1.21%  1.20%   0 Spanning Tree

173     1056945   2557586        413  0.63%  0.44%  0.42%   0 IP Input

  49      460925  66736752          6  0.47%  0.17%  0.08%   0 RedEarth Tx Mana

121     1744057 104152603         16  0.15%  0.09%  0.07%   0 Hulc LED Process

168      589862   1430258        412  0.15%  0.08%  0.06%   0 CDP Protocol

   9      189730    503145        377  0.15%  0.06%  0.11%   0 ARP Input

129     1671871    750983       2226  0.15%  0.11%  0.12%   0 HQM Stack Proces

  59      697794   5175909        134  0.15%  0.05%  0.02%   0 hrpc <- response

  78      410655   1761833        233  0.15%  0.13%  0.11%   0 HSRP (Standby)

  73       92149 108884148          0  0.15%  0.04%  0.00%   0 HLFM address ret

  13          33        13       2538  0.00%  0.00%  0.00%   0 Entity MIB API

  14           0         1          0  0.00%  0.00%  0.00%   0 IFS Agent Manage

  12           0         1          0  0.00%  0.00%  0.00%   0 Policy Manager

  17        5136   3727225          1  0.00%  0.00%  0.00%   0 IPC Periodic Tim

  15          53     62710          0  0.00%  0.00%  0.00%   0 IPC Dynamic Cach

  16          16     31355          0  0.00%  0.00%  0.00%   0 DHCPD Timer

  20        2016     54193         37  0.00%  0.00%  0.00%   0 IPC Seat Manager

  21           0         1          0  0.00%  0.00%  0.00%   0 IPC Session Serv

  11           0         2          0  0.00%  0.00%  0.00%   0 AAA high-capacit

  23        6558   3727226          1  0.00%  0.00%  0.00%   0 Dynamic ARP Insp

   7         166     25087          6  0.00%  0.00%  0.00%   0 HULC Thermal Pro

  18           0        28          0  0.00%  0.00%  0.00%   0 IPC Managed Time

  19        4258   3727229          1  0.00%  0.00%  0.00%   0 IPC Deferred Por

  22       34199   1125278         30  0.00%  0.00%  0.00%   0 HC Counter Timer

  28           0         2          0  0.00%  0.00%  0.00%   0 XML Proxy Client

  29           0         1          0  0.00%  0.00%  0.00%   0 Critical Bkgnd

  30       47688   1291543         36  0.00%  0.00%  0.00%   0 Net Background

   4     3366687    412582       8160  0.00%  0.07%  0.07%   0 Check heaps

  24           0         1          0  0.00%  0.00%  0.00%   0 ARP Snoop

   8           0         1          0  0.00%  0.00%  0.00%   0 Crash writer

  34       91968   3727721         24  0.00%  0.00%  0.00%   0 Per-Second Jobs

  35      719737     63141      11398  0.00%  0.02%  0.00%   0 Per-minute Jobs

   3      139248   5584349         24  0.00%  0.01%  0.00%   0 CEF: IPv4 proces

   2        2795    751049          3  0.00%  0.00%  0.00%   0 Load Meter

A-IT-CORE-STACK-A-SW#sh ip traffic

IP statistics:

  Rcvd:  52483756 total, 49569116 local destination

         0 format errors, 251 checksum errors, 753298 bad hop count

         0 unknown protocol, 16682 not a gateway

         0 security failures, 0 bad options, 388 with options

  Opts:  0 end, 0 nop, 0 basic security, 0 loose source route

         0 timestamp, 0 extended security, 0 record route

         0 stream ID, 0 strict source route, 388 alert, 0 cipso, 0 ump

         0 other

  Frags: 0 reassembled, 0 timeouts, 0 couldn't reassemble

         0 fragmented, 0 couldn't fragment

  Bcast: 10388117 received, 65756 sent

  Mcast: 38579103 received, 37250868 sent

  Sent:  38182048 generated, 3488720571 forwarded

  Drop:  2008572 encapsulation failed, 0 unresolved, 0 no adjacency

         0 no route, 0 unicast RPF, 0 forced drop

         0 options denied, 0 source IP address zero

ICMP statistics:

  Rcvd: 0 format errors, 0 checksum errors, 0 redirects, 2364 unreachable

        212041 echo, 3018 echo reply, 0 mask requests, 0 mask replies, 0 quench

        0 parameter, 0 timestamp, 0 info request, 0 other

        694 irdp solicitations, 0 irdp advertisements

  Sent: 2036 redirects, 7041 unreachable, 3025 echo, 212041 echo reply

        0 mask requests, 0 mask replies, 0 quench, 0 timestamp

        0 info reply, 31411 time exceeded, 0 parameter problem

        0 irdp solicitations, 0 irdp advertisements

Could you please anyone can give me a solution..

regards

Priyan

Everyone's tags (1)
2 REPLIES
Cisco Employee

Re: High CPU Utilization on cisco 3750 Stack

Hello Priyan,

I've seen this issue before, I would say you most likely are hitting CSCta80514, fortunately its a known bug that was fixed years ago.  Are the "bad hop counters" incrementing under "show ip traffic" ??

reference:

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCta80514

HTH

Lp

New Member

High CPU Utilization on cisco 3750 Stack

Hi.. Richard..

Thank you very much giving me a reply to my post .

Yes it is incrementing..

A-IT-CORE-STACK-A-SW#sh ip traffic

IP statistics:

  Rcvd:  59209630 total, 55993678 local destination

         0 format errors, 283 checksum errors, 849599 bad hop count

         0 unknown protocol, 30618 not a gateway

         0 security failures, 0 bad options, 388 with options

  Opts:  0 end, 0 nop, 0 basic security, 0 loose source route

         0 timestamp, 0 extended security, 0 record route

         0 stream ID, 0 strict source route, 388 alert, 0 cipso, 0 ump

         0 other

regards

Priyan

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