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HP NA Configuration Changes Detection


How HP NA detects configuration changes and take snopshot? What is default value, once a week? once a day ? or what?


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Hello Heavenix,


Snapshots are generated either by a user defined periodic task, which is set up in NA or snapshots are triggered by Change Detection defined by the specific Driver for the device or defined by the customer/user of NA.

Change Detection is defined in the NA 9.21 User's Guide around Page 43.


Change Detection


NA uses several methods for detecting changes to a device configuration, including:


• Syslog messages

• AAA log reading

• Internal proxy


From these methods, NA uses a number of different inputs to determine who actually made

a change on the device. This information provides the most likely user responsible for the

change. In order of priority, the following information is used:


• User who scheduled a password change that was run on the device.

• User who scheduled a software update that was run on the device.

• User who deployed a configuration to the device.

• User who ran a script on the device.

• User who connected to the device via NA’s proxy.

• User information gathered from AAA logs.

• User information parsed out of a syslog message.


NA assigns a change attribution to a device interaction that is higher in the priority list. For

example, if a user schedules a password change while another user had proxied to the

device during the same time period, if a change had been detected, that change would be

assigned to the user who had scheduled the password change.


To view configuration changes on a device:

1. On the menu bar under Devices, click Inventory. A list of all currently managed

devices opens.

2. Click the device for which you want to view configuration changes. The Device Details

page opens.

3. From the View drop-down menu, click Configuration Changes.

4. In the Changed By column, click the Details link. The User Attribution Details page



Syslog Messages

The NA Core Syslog server forwards Syslog messages to the NA Core that match a list of

Syslog patterns for the drivers that are in-use on the system. When the Discover Driver

task runs, it updates the list of Syslog message patterns to look for, and then instructs the

NA Syslog server to update its list of Syslog message patterns.


This should get you pointed in the right direction.


Thank you for your question.
Have an Insouciant Day!

Absent Member.
Absent Member.

thanks a lot for your explanations...

Commander Commander


While browsing through this thread, one question popped up in my mind. Hope you would be kind enough to correct me here.

NA discover driver task only updates syslog matching patterns only when NA driver pack is updated ?
Is that right ? or we need to SCHEDULE discover driver task for updated syslog pattern ?

I am asking this because in our deployment we haven't configured any discover driver task as I think it was unnecessary to schedule. And our NA detects changes by syslog.

Kindly reply back if any explaination or clearity is rquired.

Thanks in advance

Avi Mehenwal

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