[c-nsp] Cisco 3750 - strange CPU readings

Sun Jan 15 17:44:49 EST 2006

Further to my last email, I've done some more digging and found this. It
shows the 3750 stack is in the "desktop routing" configuration, which allows
3,000 MAC addresses. The table including dynmaic and static MAC addresses
counts as 1,110. However, the thing that puzzles me is the switch reports no
MAC address space available.

Is anyone wise enough to understand what would cause this? CLI log that
explains it is below...

c3750stack#sh sdm prefer
 The current template is "desktop routing" template.
 The selected template optimizes the resources in
 the switch to support this level of features for
 8 routed interfaces and 1024 VLANs. 

  number of unicast mac addresses:                  3K
  number of IPv4 IGMP groups + multicast routes:    1K
  number of IPv4 unicast routes:                    11K
    number of directly-connected IPv4 hosts:        3K
    number of indirect IPv4 routes:                 8K
  number of IPv4 policy based routing aces:         512
  number of IPv4/MAC qos aces:                      512
  number of IPv4/MAC security aces:                 1K

c3750stack#sh mac-address-table | in Total
Total Mac Addresses for this criterion: 1110
c3750stack#sh mac-address-table count | in Available
Total Mac Address Space Available: 0
c3750stack# 

Regards,

Ed Butler
RapidSwitch Ltd
DDI: 020 7106 0731

RapidSwitch Ltd, 5th Floor, Sovereign House, 227 Marsh Wall, London, E14 9SD

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-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Ed Butler -
RapidSwitch
Sent: 15 January 2006 20:27
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] Cisco 3750 - strange CPU readings

Hi everyone,

I'm trying to puzzle out this strange CPU readings on the 3750G. The summary
is as follows, full details are below:

Interupts: 58%
Processes: 24% (total CPU time minus interupt time)
Processes: 9.14% (adding all processes together)

Since the majority of the high CPU usage is caused by interupts, I've
followed the Cisco troubleshooting guide with no luck.

The 3750s don't seem to be tracking CPU usage correctly, which is making it
a pain to investigate and resolve. Has anyone seen similar problems and
managed to resolve it?

c3750stack#sh proc cpu sort | e 0.00%  0.00%  0.00% CPU utilization for five
seconds: 82%/58%; one minute: 78%; five minutes:
76%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process 
 152      845807   2537869        333  1.91%  1.65%  1.50%   0 IP Input

  43      744941     27346      27241  1.43%  1.08%  1.00%   0 Adjust
Regions   
 155      265338   1102349        240  1.11%  0.44%  0.48%   0 Spanning Tree

   4      120377      9437      12755  1.11%  0.18%  0.14%   0 Check heaps

   7      817662   2202237        371  0.95%  1.74%  1.52%   0 ARP Input

 106      175808     51430       3418  0.63%  0.33%  0.32%   0 HL3U bkgrd
proce 
 210      486666    108729       4475  0.63%  0.73%  0.73%   0 CEF: IPv4
proces 
 105       89471   1629593         54  0.31%  0.25%  0.24%   0 Hulc LED
Process 
  42       36482   3608268         10  0.31%  0.15%  0.12%   0 Fifo Error
Detec 
  75       25634    136100        188  0.15%  0.04%  0.00%   0 HRPC
pm-counters 
 130        1774     13439        132  0.15%  0.01%  0.00%   0 DTP Protocol

 127       36261     69618        520  0.15%  0.03%  0.04%   0 PI MATM Aging
Pr 
 115       19235     14102       1363  0.15%  0.08%  0.07%   0 HQM Stack
Proces 
  46       54786    227918        240  0.15%  0.07%  0.05%   0 hrpc <-
response 
  18        7952     17569        452  0.00%  0.02%  0.00%   0 HC Counter
Timer 
  23        2364     56035         42  0.00%  0.01%  0.00%   0 Net
Background   
  30        6696     14104        474  0.00%  0.03%  0.00%   0 Compute load
avg 
  54       13083   2023144          6  0.00%  0.01%  0.00%   0 HLFM address
lea 
  74       45955    104350        440  0.00%  0.04%  0.05%   0 hpm counter
proc 
  79       14002     32880        425  0.00%  0.03%  0.00%   0 HL2MM

  93        3314    345352          9  0.00%  0.01%  0.00%   0 Hulc Storm
Contr 
 116       89357     84358       1059  0.00%  0.11%  0.09%   0 HRPC qos
request 
 139        8488       511      16610  0.00%  0.15%  0.49%   1 Virtual Exec

 200        1780    580811          3  0.00%  0.01%  0.00%   0 PM Callback

 222        6286        28     224500  0.00%  0.00%  0.05%   0 hulc running
con
c3750stack#

Regards,

Ed Butler
RapidSwitch Ltd
DDI: 020 7106 0731

RapidSwitch Ltd, 5th Floor, Sovereign House, 227 Marsh Wall, London, E14 9SD

This email message is intended only for the addressee(s) and contains
information that may be confidential and/or copyright.  If you are not the
intended recipient please notify the sender by reply email and immediately
delete this email. Use, disclosure or reproduction of this email by anyone
other than the intended recipient(s) is strictly prohibited. No
representation is made that this email or any attachments are free of
viruses. Virus scanning is recommended and is the responsibility of the
recipient. 

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