How do I configure the windowing trap delayer option for subscriber table resyncs?

Purpose

Configure the windowing trap delayer option to provide an enhanced method to resynchronize the subscriber table in the event that an NE drops a trap.

Configurable hold-off options prevent subscriber table resyncs for a minimum specified duration after a trap drop is received from an NE, and until a specified period has elapsed with no additional trap drops. Additionally, a maximum hold-off time is specified to prevent excessive periods during which the NFM-P is not synchronized with the NE. The windowing trap delayer configuration reduces the number of subscriber table resync events while attempting to maintain synchronization with the NE.

Note: The windowing trap delayer option affects only tmnxTrapDropped traps associated with tmnxSubscriberCreated, tmnxSubscriberDeleted or tmnxSubscriberRenamed traps. When the windowing trap delayer option is disabled, tmnxTrapDropped traps are delayed using the default trap delay function.

CAUTION 

CAUTION

Service Disruption

Modifying the server configuration can have serious consequences including service disruption.

Contact technical support before you attempt to modify the server configuration.

Note: You must perform the procedure on each main server in the NFM-P system.

Note: In a redundant system, you must perform the procedure on the standby main server station first.

Steps
 
1 

Log in to the main server station as the nsp user.

2 

Open a console window.

3 

Navigate to the /opt/nsp/nfmp/server/nms/config directory.

4 

Create a backup copy of the nms-server.xml file.

5 

Open the nms-server.xml file using a plain-text editor.

6 

Locate the section that begins with the following XML tag:

<snmp

7 

Add the following to the section:

Note: The checkInterval value must be less than the windowLength value, which must be less than the maxHoldOff value.

<windowingTrapDelayer

enabled="true"

checkInterval="interval"

windowLength="duration"

maxHoldOff="wait" />

where

interval is the minimum time, in seconds, during which subscriber table resynchronzation is prevented; the range is 5 to 30, and the default is 10

duration is the time, in seconds, during which no additional trap drops can be received before subscriber table resyncs are allowed; the range is 5 to 60, and the default is 30

wait is the maximum hold-off time, in seconds, after which subscriber table resynchronization is allowed; the range is 5 to 1800; the default is 60

8 

Save and close the nms-server.xml file.

9 

On a standalone main server, or the primary main server in a redundant system, enter the following:

bash$ /opt/nsp/nfmp/server/nms/bin/nmsserver.bash read_config ↵

The NFM-P puts the configuration change into effect.

10 

Close the console window.

End of steps