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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

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

configure terminal 3. 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# 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 192.168. • Enter your password if prompted. enable 2. 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. Example: Router> enable Step 2 configure terminal Enables global configuration mode. perform these steps: SUMMARY STEPS 1.Configuring CPU Threshold Notifications How to Configure CPU Thresholding Notification 4.0 traps public cpu Defining CPU Thresholding Notification To define a rising and a falling CPU threshold notification. process cpu threshold type {total | process | interrupt} rising percentage interval seconds [falling percentage interval seconds] 3 .0.

process cpu statistics limit entry-percentage number [size seconds] . • Enter your password if prompted. 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. 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. enable 2. 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. with a 5-second polling interval. perform these steps: SUMMARY STEPS 4 1. configure terminal 3. • In this example.

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

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. .

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

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