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New Member

7206 VXR Sustained High CPU

Router CPU is staying high. Any ideas. No changes to configuration in a while.

Plt-72-7206-2#show proc cpu sort | ex 0.00

CPU utilization for five seconds: 91%/87%; one minute: 88%; five minutes: 90%

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

  42  1116663516  34369829      32489  1.55%  1.57%  1.55%   0 Per-Second Jobs 

   3       12184       479      25436  0.73%  0.18%  0.09%   2 SSH Process     

   2    10062364   6316855       1592  0.24%  0.18%  0.22%   0 Load Meter      

253    32905124 688870377         47  0.16%  0.10%  0.09%   0 PIM Process     

254     8582756 313818474         27  0.08%  0.02%  0.02%   0 Mwheel Process  

  71    18013132  31571049        570  0.08%  0.09%  0.08%   0 ct3sw_periodic 5

269    30122288 969670565         31  0.08%  0.10%  0.09%   0 PPP manager     

  38    79810640  16258093       4908  0.08%  0.11%  0.10%   0 Net Background  

  83   174452140 204170203        854  0.08%  0.09%  0.08%   0 IP Input        

Plt-72-7206-2#sho ver

Cisco IOS Software, 7200 Software (C7200-ADVIPSERVICESK9-M), Version 12.4(15)T11, RELEASE SOFTWARE (fc2)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2009 by Cisco Systems, Inc.

Compiled Thu 29-Oct-09 03:18 by prod_rel_team

ROM: System Bootstrap, Version 12.3(4r)T3, RELEASE SOFTWARE (fc1)

BOOTLDR: Cisco IOS Software, 7200 Software (C7200-KBOOT-M), Version 12.4(15)T11, RELEASE SOFTWARE (fc2)

Plt-72-7206-2 uptime is 1 year, 13 hours, 48 minutes

System returned to ROM by power-on

System restarted at 22:54:51 edt Sat Jul 16 2011

System image file is "disk2:c7200-advipservicesk9-mz.124-15.T11.bin"

This product contains cryptographic features and is subject to United

States and local country laws governing import, export, transfer and

use. Delivery of Cisco cryptographic products does not imply

third-party authority to import, export, distribute or use encryption.

Importers, exporters, distributors and users are responsible for

compliance with U.S. and local country laws. By using this product you

agree to comply with applicable laws and regulations. If you are unable

to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:

http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to

export@cisco.com.

Cisco 7206VXR (NPE-G1) processor (revision B) with 983040K/65536K bytes of memory.

Processor board ID 35028224

SB-1 CPU at 700MHz, Implementation 1025, Rev 0.2, 512KB L2 Cache

6 slot VXR midplane, Version 2.11

Last reset from power-on

PCI bus mb1 (Slots 1, 3 and 5) has a capacity of 600 bandwidth points.

Current configuration on bus mb1 has a total of 180 bandwidth points.

This configuration is within the PCI bus capacity and is supported.

PCI bus mb2 (Slots 2, 4 and 6) has a capacity of 600 bandwidth points.

Current configuration on bus mb2 has a total of 0 bandwidth points.

This configuration is within the PCI bus capacity and is supported.

Please refer to the following document "Cisco 7200 Series Port Adaptor

Hardware Configuration Guidelines" on Cisco.com <http://www.cisco.com>

for c7200 bandwidth points oversubscription and usage guidelines.

3 Gigabit Ethernet interfaces

25 Serial interfaces

24 Channelized T1/PRI ports

2 Channelized T3 ports

509K bytes of NVRAM.

250880K bytes of ATA PCMCIA card at slot 2 (Sector size 512 bytes).

16384K bytes of Flash internal SIMM (Sector size 256K).

Configuration register is 0x2102

Plt-72-7206-2#show run | in cef

ip cef

  • LAN Switching and Routing
Everyone's tags (6)
4 REPLIES
Hall of Fame Super Silver

7206 VXR Sustained High CPU

Hello Rgoble,

most of cpu usage is caused by interrupts with low load on processes

CPU utilization for five seconds: 91%/>>>>87%<<<<; one minute: 88%; five minutes: 90%

see the following document on how to investigate further

http://www.cisco.com/en/US/products/hw/routers/ps359/products_tech_note09186a00801c2af0.shtml

Hope to help

Giuseppe

New Member

7206 VXR Sustained High CPU

Will Do. Thanks!

New Member

7206 VXR Sustained High CPU

After pursuing this with TAC it was determined that the router was getting taxed by the QOS and ACL's configured on the router. Suggestion was to upgrade to a ASR1002. The upgrade is complete and this router is running at 2% CPU as opposed to 98% CPU on the 7206. Basically the same configuration.

Hall of Fame Super Silver

7206 VXR Sustained High CPU

Hello Rgoble,

nice to see your feedback.

An ASR 1002 is a newer platform and it is not a SW only based router, it has hardware to perform QoS and ACLs filtering (ESP) so the main cpu is far less used then in C7200.

It has also much better performance on the data plane.

Hope to help

Giuseppe

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