> - Downloads
> - Configuring an SNMP Alarm on a C Series Controller (SRC CLI)
> - Related Topics
> - Defining an Alarm for an SNMP Monitor That Compares Object Values (SRC CLI)
> - Defining an Alarm to Monitor the Status of an Object (SRC CLI)
> - Defining an Alarm for an SNMP Monitor That Compares Values Against Thresholds (SRC CLI)
> - Configuration Statements for Customized SRC SNMP Monitors
> - SNMP Monitoring on C Series Controllers

> # Configuring an SNMP Alarm on a C Series Controller (SRC CLI)

> You can configure SNMP to establish alarms for custom monitors.

> | Note: Configure only one monitor test at a time.

> To configure an SNMP alarm:

> 1. Specify an SNMP username.

>    See Configuring an SNMPv3 Security Name for SNMP Monitoring (SRC CLI).

> 2. From configuration mode, access the configuration statements that configures an alarm. For example:
>    `
>    [edit]
>    user@host# edit snmp monitor alarm saeHeapUsage
>    `

>    where saeHeapUsage is the name of the alarm.

> 3. Specify the number of seconds between which SNMP samples the value of an object. For example:
>    `
>    [edit snmp monitor alarm saeHeapUsage]
>    user@host# set interval 60
>    `
> 4. Specify whether to sample the actual value of the object or the difference between two values. For example, to use the actual of the object:
>    `
>    [edit snmp monitor alarm saeHeapUsage]
>    user@host# set sample-type absolute-value
>    `

>    If you set the sample type to delta-value, you can configure a discontinuity check. See Defining a Discontinuity Check to Validate Delta Values (SRC CLI).

> 5. (Optional) Indicate that an alarm not be sent when the alarm is initially activated.
>    `
>    [edit snmp monitor alarmsaeHeapUsage]
>    user@host# set ignore-startup-alarm
>    `
> 6. (Optional) Specify the name of the event to be generated in response to an alarm condition. For example:
>    `
>    [edit snmp monitor alarm saeHeapUsage]
>    user@host# set event saeHeapUsageEvent
>    `
> 7. Specify the name or object identifier (OID) of the MIB variable to be monitored. For example:
>    `
>    [edit snmp monitor alarm saeHeapUsage]
>    user@host# set variable juniSdxSaeHeapUsed.0
>    `
> 8. (Optional) Specify whether to monitor the SNMP object instance identified by a variable attribute. To monitor the SNMP object instance specified by the variable attribute:
>    `
>    [edit snmp monitor alarm saeHeapUsage]
>    user@host# set strict-oid
>    `

>    Do not enable the strict-oid option when you monitor a column of an SNMP MIB table. An alarm for a column monitors the column on all entries of the table. If an entry for an object in the column passes an alarm test, an event is generated for that object.

> 9. Configure a boolean, existence, or threshold test for the alarm.

> #### Published: 2009-09-10

> Copyright © 2009, Juniper Networks, Inc. All rights reserved. Trademark Notice.