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Level 13

UDT - what goes on behind the curtains

Can someone from SolarWinds confirm what UDT does when it polls for info?  I am trying to figure where the breakdown is so I can possibly solve my issues where I am getting very hit and miss results.

I have some switches that do not get any info , some that only show MAC's and a few that work fully.

 

Is this the way it is?

 

Pull Mac table -> find nearest layer 3 and pull ARP cache (via cdp?)-> Do reverse DNS lookups on IPs -> Correlate all the data

 

My guess is maybe the ones where I get MACs only the chassis is performing L3 and the switch ARP does not get pulled.

The ones where I get nothing, well I have no clue about those yet but it must be for the same reason as its all my 6500's so far and then my Nexus 5k's.

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Level 13

To confirm , the devices I get only L2 from have no associated router whereas those that do will have one or list themselves which is correct.  In fact I have one that should list itself but it picked a router that serves only as a voice gateway and does not route.

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Hi Donald--

Thanks for the feedback. I'll mark this for PM.

M

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