07-16-2012 10:09 AM - edited 03-07-2019 07:48 AM
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:
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If you require further assistance please contact us by sending email to
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
07-16-2012 10:15 AM
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
07-16-2012 11:37 AM
Will Do. Thanks!
07-30-2012 10:42 AM
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.
07-30-2012 10:47 AM
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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