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

Modification

12.0(26)S

This feature was introduced.

12.3(4)T

This feature was integrated into Cisco IOS Release 12.3(4)T.

12.2(25)S

This feature was integrated into Cisco IOS Release 12.2(25)S.

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Contents

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

enable 2.0. configure terminal 3. Example: Router# configure terminal Step 3 snmp-server enable traps cpu threshold Enables CPU thresholding violation notification as traps and inform requests. Example: Router(config)# snmp-server host 192. process cpu threshold type {total | process | interrupt} rising percentage interval seconds [falling percentage interval seconds] 3 .Configuring CPU Threshold Notifications How to Configure CPU Thresholding Notification 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] DETAILED STEPS Step 1 Command or Action Purpose enable Enables privileged EXEC mode. 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.0 traps public cpu Defining CPU Thresholding Notification To define a rising and a falling CPU threshold notification.168. perform these steps: SUMMARY STEPS 1. • Enter your password if prompted. Example: Router> enable Step 2 configure terminal Enables global configuration mode.

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

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

they take on the same values as the rising arguments (percentage and seconds).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 6 When the optional falling arguments (percentage and seconds) are not specified. .

refer to the following references: Related Documents Related Topic Document Title SNMP traps 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. use Cisco MIB Locator found at the following URL: http://www. http://www. technical tips. technologies.com/public/support/tac/home. Registered Cisco. containing 30. including links to products.Configuring CPU Threshold Notifications Additional References Additional References For additional information related to the CPU Thresholding Notification feature.000 pages of searchable technical content. MIBs MIBs MIBs Link CISCO-PROCESS-MIB To locate and download MIBs for selected platforms.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.com users can log in from this page to access even more content.cisco.shtml 7 .cisco. and feature sets. and tools. Technical Assistance Description Link Technical Assistance Center (TAC) home page. Cisco IOS releases. solutions.

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