Supported Platforms
Related Documentation
- M, MX, PTX, T Series
- Understanding SNMP Implementation in Junos OS
- Configuring SNMP on Devices Running Junos OS
- Monitoring SNMP Activity and Tracking Problems That Affect SNMP Performance on a Device Running Junos OS
- Optimizing the Network Management System Configuration for the Best Results
- Configuring Options on Managed Devices for Better SNMP Response Time
- Managing Traps and Informs
- QFabric System, QFX Series standalone switches
- Understanding the Implementation of SNMP on the QFabric System
Using the Enterprise-Specific Utility MIB to Enhance SNMP Coverage
Even though the Junos OS has built-in performance metrics and monitoring options, you might need to have customized performance metrics. To make it easier for you to monitor such customized data through a standard monitoring system, the Junos OS provides you with an enterprise-specific Utility MIB that can store such data and thus extend SNMP support for managing and monitoring the data of your choice.
The enterprise-specific Utility MIB provides you with container objects of the following types: 32-bit counters, 64-bit counters, signed integers, unsigned integers, and octet strings. You can use these container MIB objects to store the data that are otherwise not supported for SNMP operations. You can populate data for these objects either by using CLI commands or with the help of Op scripts and an RPC API that can invoke the CLI commands.
The following CLI commands enable you to set and clear Utility MIB object values:
- request snmp utility-mib set instance name object-type <counter | counter 64 | integer | string | unsigned integer> object-value value
- request snmp utility-mib clear instance name object-type <counter | counter 64 | integer | string | unsigned integer>
The instance name option of the request snmp utility-mib <set | clear> command specifies the name of the data instance and is the main identifier of the data. The object-type <counter | counter 64 | integer | string | unsigned integer> option enables you specify the object type, and the object-value value option enables you to set the value of the object.
To automate the process of populating Utility MIB data, you can use a combination of an event policy and event script. The following examples show the configuration for an event policy to run show system buffers every hour and to store the show system buffers data in Utility MIB objects by running an event script (check-mbufs.slax).
Event Policy Configuration
To configure an event policy that runs the show system buffers command every hour and invokes check-mbufs.slax to store the show system buffers data into Utility MIB objects, include the following statements at the [edit] hierarchy level:
check-mbufs.slax Script
The following example shows the check-mbufs.slax script that is stored under /var/db/scripts/event/:
------ script START ------
version 1.0;
ns junos = "http://xml.juniper.net/junos/*/junos";
ns xnm = "http://xml.juniper.net/xnm/1.1/xnm";
ns jcs = "http://xml.juniper.net/junos/commit-scripts/1.0";
ns ext = "http://xmlsoft.org/XSLT/namespace";
match / {
<op-script-results>{
var $cmd = <command> "show system buffers";
var $out = jcs:invoke($cmd);
var $lines = jcs:break_lines($out);
for-each ($lines) {
if (contains(., "current/peak/max")) {
var $pattern = "([0-9]+)/([0-9]+)/([0-9]+) mbufs";
var $split = jcs:regex($pattern, .);
var $result = $split[2];
var $rpc = <request-snmp-utility-mib-set> {
<object-type> "integer";
<instance> "current-mbufs";
<object-value> $result;
}
var $res = jcs:invoke($rpc);
}
}
}
}
------ script END ------
You can run the following command to check the data stored in the Utility MIB as a result of the event policy and script shown in the preceding examples:
user@host> show snmp mib walk jnxUtilData ascii jnxUtilIntegerValue."current-mbufs" = 0 jnxUtilIntegerTime."current-mbufs"
= 07 da 05 0c 03 14 2c 00 2d 07 00 user@caramels>  | Note: The show snmp mib walk command is not available on the QFabric system, but you can use external SNMP client applications to perform this operation. |
Related Documentation
- M, MX, PTX, T Series
- Understanding SNMP Implementation in Junos OS
- Configuring SNMP on Devices Running Junos OS
- Monitoring SNMP Activity and Tracking Problems That Affect SNMP Performance on a Device Running Junos OS
- Optimizing the Network Management System Configuration for the Best Results
- Configuring Options on Managed Devices for Better SNMP Response Time
- Managing Traps and Informs
- QFabric System, QFX Series standalone switches
- Understanding the Implementation of SNMP on the QFabric System
Modified: 2016-06-09
Supported Platforms
Related Documentation
- M, MX, PTX, T Series
- Understanding SNMP Implementation in Junos OS
- Configuring SNMP on Devices Running Junos OS
- Monitoring SNMP Activity and Tracking Problems That Affect SNMP Performance on a Device Running Junos OS
- Optimizing the Network Management System Configuration for the Best Results
- Configuring Options on Managed Devices for Better SNMP Response Time
- Managing Traps and Informs
- QFabric System, QFX Series standalone switches
- Understanding the Implementation of SNMP on the QFabric System
