eval statement syntax for SNMP variables

You can evaluate SNMP variables using the eval statement.

The following examples illustrate how to evaluate SNMP variables using the eval statement.

Sample: Evaluation of SNMP values

The following example returns the value of the SNMP variable sysName.

eval(text, '&SNMP.VALUE.sysName')

Sample: Evaluation of SNMP indices

The following example returns the value of the index of the SNMP request for the variable ipRouteNextHop. In a table poll, this is evaluated for every index in the table list..

eval(text, '&SNMP.INDEX.ipRouteNextHop')

Sample: Evaluation of previously retrieved SNMP values

The following example returns the value of the SNMP variable sysName, which was retrieved when this poll was last run..

eval(text, '&SNMP.VALUE.OLD.sysName')

Sample: Evaluation of the results of an expression

The following example returns the results of an expression, such as the SNMP Bandwidth poll. The results are written directly within the alert description within the IBM Tivoli Netcool/OMNIbus or Event Viewer.

Note: This feature is only available in basic threshold polls. The feature is not available in generic threshold polls, because generic threshold polls do not evaluate to a result, they only evaluate to true or false. If you attempt to use this syntax in a generic threshold, the operation will not fail; however, it will generate a blank space in the alert.

eval(text,'&POLLDATA.RESULT')

Sample: Evaluation of Old SNMP Indices

The following example returns the value of the index of the SNMP request for the variable ipRouteNextHop, which was retrieved when this poll was last run. In a table poll, this is evaluated for every index in the table list. Note that the old index is likely to be the same as the new index.

eval(text, '&SNMP.INDEX.OLD.ipRouteNextHop')