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

3.168. enable configure terminal process cpu threshold type {total | process | interrupt} rising percentage interval seconds [falling percentage interval seconds] 3 . Example: Router(config)# snmp-server host 192. perform these steps: SUMMARY STEPS 1. 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. 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. Example: Router> enable Step 2 configure terminal Enables global configuration mode. 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. 2.0 traps public cpu Defining CPU Thresholding Notification To define a rising and a falling CPU threshold notification.Configuring CPU Threshold Notifications How to Configure CPU Thresholding Notification 4.

enable configure terminal process cpu statistics limit entry-percentage number [size seconds] 4 . • Example: Router(config)# process cpu threshold type total rising 80 interval 5 falling 20 interval 5 In this example. 2. 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.Configuring CPU Threshold Notifications How to Configure CPU Thresholding Notification DETAILED STEPS Command or Action Step 1 enable Purpose Enables privileged EXEC mode. 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. 3. • Enter your password if prompted. with a 5-second polling interval. perform these steps: SUMMARY STEPS 1. 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.

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

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 When the optional falling arguments (percentage and seconds) are not specified. 6 .

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

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