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I believe you are actually right in the cause of your issue. So I wonder - haven't you tried an experiment - to add a vlan interface under monitored ones, to see if it doesn't improve the visibility of the desired information?
I added routers into UDT and suddently it started working. So it needs to be a full layer 3 device to get IP/hostname/user information. Weirdly i cant see it specifically documented that this is the case.
Thanks for the assist though!
Well, since L2 devices don't know the IP - MAC correlation, you have to have L3 devices monitored to get this info ( I was assuming they are..)
Thanks for pointing on the documentation lacking this, will try to get it resolved in some meaningful way.
I had this problem when I had a flat network (all devices in a single vlan). Only ststic IP addresses were reported with MAC and hostname.
I was using DELL PowerConnect switches and I raised a ticket with both DELL and Solarwinds.
Solarwinds support said it was because UDT was not getting the information from the switches and I should raise a ticket with DELL.
DELL support confirmed this by saying that since I had no layer 3 function on my network, the switch ARP tables did not have any entries to report.
When I introduced layer 3 functionality on my network, the UDT charts started to populate with more entries.
I am not able to see users logged on either. Reading the replies above I have checked that the VLANs are being monitored. Where do you view the users that are logged into the port?
NPM only lists 2 of the 8 vlans configured on the switch - can this be a possible reason?