This can be achieved fairly easily using the Event Management System and a regular expression. Browse to Administration -> Event Administration. Click on the Rules hyperlink. Create a new Pre-Storage rule.
Assign a name to the rule and change the condition to All Tests Must Succeed:
Click Add in the Condition section to add a test. Select Event Type test and then select Network Outage as the event type:
Add a second condition for Event Attribute. Select reason as the attribute and select matches for the operation. Copy/paste the text below into the value field:
The above regular expression will match on Port Unreachable VLAN_ and any value from 400 to 499.
Next, click the Add button in the Action section.Select Discard as the action type. The rule should now look similar to the screenshot below:
The last step is to save and deploy the project.
thanks for your replay
i already did the above as it is but it did not work
Please open a ticket with Support. I was unable to test this on a live system. However, I tested the regex expression and it matched correctly. Support may be able to turn up the logging level for the log file to see if this rule is working correctly.