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Configuring CPU Threshold Notifications

The CPU Thresholding Notification feature notifies users when a predefined threshold of CPU usage is crossed by generating a Simple Network Management Protocol (SNMP) trap message for the top users of the CPU.
Feature History for the CPU Thresholding Notification Feature

Release 12.0(26)S 12.3(4)T 12.2(25)S

Modification This feature was introduced. This feature was integrated into Cisco IOS Release 12.3(4)T. This feature was integrated into Cisco IOS Release 12.2(25)S.

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Contents
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Restrictions for CPU Thresholding Notification, page 2 Information About CPU Thresholding Notification, page 2 How to Configure CPU Thresholding Notification, page 2 Configuration Examples for CPU Thresholding Notification, page 5 Additional References, page 7 Command Reference, page 8

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the CPU Thresholding Notification feature may not accurately measure the CPU load. Falling Threshold A falling CPU utilization threshold specifies the percentage of CPU resources that. page 2 Falling Threshold. Information About CPU Thresholding Notification The CPU Thresholding Notification feature allows you to configure CPU utilization thresholds that. 2. How to Configure CPU Thresholding Notification This section contains the following procedures: • • • Enabling CPU Thresholding Notification. perform these steps: SUMMARY STEPS 1. In the unlikely event where the traffic rate is a multiple of this tick rate over a prolonged period of time. when crossed. 3. when exceeded for a configured period of time. Two types of CPU utilization threshold are supported: • • Rising Threshold. page 2 Rising Threshold A rising CPU utilization threshold specifies the percentage of CPU resources that. page 3 Setting the Entry Limit and Size of CPU Utilization Statistics. triggers a CPU threshold notification. enable configure terminal snmp-server enable traps cpu threshold 2 . page 2 Defining CPU Thresholding Notification. when CPU usage falls below this level for a configured period of time. triggers a CPU threshold notification. page 4 Enabling CPU Thresholding Notification To specify the recipient of SNMP notification operations and enable CPU thresholding notification. trigger a notification.Configuring CPU Threshold Notifications Restrictions for CPU Thresholding Notification Restrictions for CPU Thresholding Notification CPU utilization averages are computed by Cisco IOS software using a 4-millisecond Network-to-Management Interface (NMI) tick.

snmp-server host host-address [traps | informs] [version {1 | 2c | 3 [auth | noauth | priv]}] community-string [udp-port port] cpu [notification-type] [vrf vrf-name] DETAILED STEPS Command or Action Step 1 enable Purpose Enables privileged EXEC mode.0. Example: Router(config)# snmp-server enable traps cpu threshold Step 4 snmp-server host host-address [traps | informs] [version {1 | 2c | 3 [auth | noauth | priv]}] community-string [udp-port port] cpu [notification-type] [vrf vrf-name] Sends CPU traps to the specified address. perform these steps: SUMMARY STEPS 1.Configuring CPU Threshold Notifications How to Configure CPU Thresholding Notification 4. 2.168. 3. Example: Router> enable Step 2 configure terminal Enables global configuration mode.0 traps public cpu Defining CPU Thresholding Notification To define a rising and a falling CPU threshold notification. Example: Router(config)# snmp-server host 192. Example: Router# configure terminal Step 3 snmp-server enable traps cpu threshold Enables CPU thresholding violation notification as traps and inform requests. • Enter your password if prompted. enable configure terminal process cpu threshold type {total | process | interrupt} rising percentage interval seconds [falling percentage interval seconds] 3 .

• Enter your password if prompted. Example: Router# configure terminal Step 3 process cpu threshold type {total | process | interrupt} rising percentage interval seconds [falling percentage interval seconds] Sets the CPU thresholding notifications types and values. Example: Router> enable Step 2 configure terminal Enters global configuration mode. 2. enable configure terminal process cpu statistics limit entry-percentage number [size seconds] 4 . Setting the Entry Limit and Size of CPU Utilization Statistics To set the process entry limit and the size of the history table for CPU utilization statistics. perform these steps: SUMMARY STEPS 1. 3.Configuring CPU Threshold Notifications How to Configure CPU Thresholding Notification DETAILED STEPS Command or Action Step 1 enable Purpose Enables privileged EXEC mode. with a 5-second polling interval. • Example: Router(config)# process cpu threshold type total rising 80 interval 5 falling 20 interval 5 In this example. the CPU utilization threshold is set to 80 percent for a rising threshold notification and 20 percent for a falling threshold notification.

page 5 Setting a Rising CPU Thresholding Notification: Example The following example shows how to set a rising CPU thresholding notification for total CPU utilization. Example: Router> enable Step 2 configure terminal Enters global configuration mode. they take on the same values as the rising arguments (percentage and seconds). which at one point had risen above 80 percent and triggered a rising threshold notification. Router(config)# process cpu threshold type total rising 80 interval 5 Note When the optional falling arguments (percentage and seconds) are not specified. • Example: Router(config)# process cpu statistics limit entry-percentage 40 size 300 In this example. to generate an entry in the history table. • Enter your password if prompted. When total CPU utilization exceeds 80 percent for a period of 5 seconds or longer. page 5 Setting a Falling CPU Thresholding Notification: Example. a rising threshold notification is sent. In this example. falls below 70 percent for a period of 5 seconds or longer. the duration of time for which the most recent history is saved in the history table is 300 seconds.Configuring CPU Threshold Notifications Configuration Examples for CPU Thresholding Notification DETAILED STEPS Command or Action Step 1 enable Purpose Enables privileged EXEC mode. Example: Router# configure terminal Step 3 process cpu statistics limit entry-percentage number [size seconds] Sets the process entry limit and the size of the history table for CPU utilization statistics. Setting a Falling CPU Thresholding Notification: Example The following example shows how to set a falling CPU thresholding notification for total CPU utilization. • Configuration Examples for CPU Thresholding Notification The following examples show how to set a rising and a falling CPU thresholding notification: • • Setting a Rising CPU Thresholding Notification: Example. 5 . a process must exceed 40 percent CPU utilization. a falling threshold notification is sent. When total CPU utilization.

6 .Configuring CPU Threshold Notifications Configuration Examples for CPU Thresholding Notification Router(config)# process cpu threshold type total rising 80 interval 5 falling 70 interval 5 Note When the optional falling arguments (percentage and seconds) are not specified. they take on the same values as the rising arguments (percentage and seconds).

and feature sets.cisco.cisco.Configuring CPU Threshold Notifications Additional References Additional References For additional information related to the CPU Thresholding Notification feature. technologies. Cisco IOS releases.com/go/mibs RFCs RFCs Title No new or modified RFCs are supported by this feature — and support for existing RFCs has not been modified by this feature. use Cisco MIB Locator found at the following URL: http://www.com/public/support/tac/home.com users can log in from this page to access even more content. solutions. Technical Assistance Description Technical Assistance Center (TAC) home page. and tools. refer to the following references: Related Documents Related Topic SNMP traps Document Title Configuration Fundamentals Command Reference Standards Standards Title No new or modified standards are supported by this — feature and support for existing standards has not been modified by this feature. Registered Cisco. including links to products. technical tips. containing 30.shtml 7 . Link http://www. MIBs MIBs CISCO-PROCESS-MIB MIBs Link To locate and download MIBs for selected platforms.000 pages of searchable technical content.

MeetingPlace. iQuick Study.4. Fast Step. The Fastest Way to Increase Your Internet Quotient. Network Registrar. Collaboration Without Limitation.com/en/US/docs/ios/mcl/124mainlinemcl/124_book. CCNP. Cisco TelePresence. IronPort. the Cisco Certified Internetwork Expert logo. and Learn and Cisco Store are service marks. HomeLink. Event Center. Release 12. CCDA. SMARTnet. IOS. at http://www. MeetingPlace Chime Sound. DCE. Live. Cisco. Inc. Changing the Way We Work. CCIP. TransPath. Cisco Nexus. SenderBase. Follow Me Browsing. PIX. PCNow. Play. the IronPort logo. AsyncOS. and figures included in the document are shown for illustrative purposes only. Cisco WebEx. and the WebEx logo are registered trademarks of Cisco Systems. Bringing the Meeting To You. Any use of actual IP addresses in illustrative content is unintentional and coincidental. Cisco Systems Capital. Cisco Press. and Welcome to the Human Network are trademarks. go to the Cisco IOS Master Commands List.cisco. CCENT. (0809R) Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. CCSP. EtherFast. Internet Quotient. To see the command pages for these commands and other commands used with this feature. All other trademarks mentioned in this document or website are the property of their respective owners. CCIE. Aironet. Networkers. Cisco IOS. 8 . Linksys. PowerPanels. Cisco Lumin. the Cisco Systems logo. iPhone. StackWise.Configuring CPU Threshold Notifications Command Reference Command Reference The following new and modified commands are pertinent to this feature. command display output. LightStream. Networking Academy. ProConnect. and Access Registrar. Cisco StadiumVision. MediaTone. WebEx. The use of the word partner does not imply a partnership relationship between Cisco and any other company. EtherSwitch.html. Catalyst. Cisco Eos. © 2007 Cisco Systems. Any examples. MGX. All rights reserved. CCNA. CCDP. the Cisco logo. Inc. GigaDrive. Cisco Systems. Cisco Unity. • • • • process cpu statistics limit entry-percentage process cpu threshold type snmp-server enable traps cpu snmp-server host CCDE. ScriptShare. and/or its affiliates in the United States and certain other countries. CCVP. FormShare. Spectrum Expert.