Netsight / EMS time lapse data retention settings/limitations?

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Is anyone aware of a retention setting for location data in Netsight (in regards to wireless clients)? I find that when I am tracking a client, I can usually only roll back the past 15 minutes or so. Certainly no more than an hour.

Is this data coming from a cache that is flushed periodically? If so, is there a way to raise the retention period so that I can have more historical data?

We have had some complaints from wireless users and I believe that their mobile carts are being dragged between different floors - but the NIC is remaining connected (or reconnecting) to the originating floor. But I don't really have enough history to see half or a full workday.

I am running version 7.0.8.34.
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Steve Ballantyne

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Posted 1 year ago

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Ronald Dvorak, Embassador

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Hey Steve,

I'd take a look on my system but I can't even find the right view in EMC for that :-) any hints...
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Steve Ballantyne

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Hey Ron,

I am going into Analytics > Application Flows. Then right-click a client address, and "Search Maps". Once onto a map, there is a checkbox in the upper-right corner that says "Time-lapse location". Check that box, and click the little blue refresh button. Then you should have arrows to go forward and back in time.

Of course this all only works if you have maps set up for your location(s)! Which, if you don't, you totally should. Because this is a fantastic feature.  :-)
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Ronald Dvorak, Embassador

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Looks like I'd need a pay raise to afford a larger flat so I'd install more APs for location triangulation :-(

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Steve Ballantyne

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I am currently (and often) working out of a glorified construction trailer. It has roughly this same shape, and only one access point. Except - no walls.  So I know the feeling. :-) Thanks for trying to play along!
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Ronald Dvorak, Embassador

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I've "deployed" 2 extra APs and now I get triangulation results, let's see in an hour whether I'd roll back >15Min.
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Ronald Dvorak, Embassador

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Yupp, I'd also only go back 15minutes....
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Steve Ballantyne

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Thanks for taking the time to set up a test environment. Seems like there should be a setting for retention. But I can't find it.
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Steve Ballantyne

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I have a feeling that there is no setting for the retention. I have opened a case on this in the form of a feature request (along with some other wish-list stuff). Case number is 01273808.

I will drop any feedback that I receive into this post.
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Steve Ballantyne

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Just an update on this: I heard back from an engineer earlier in the week. He stated that there is a limitation of 20 location updates cached away at any time for a host. This would explain why you can only turn back time "so far". He said that this can be adjusted using some debugging tricks, but also offered to put in a feature request for me.

This has been submitted as feature request# 1283123. The request is to allow the user to change this from 20 to something else.