Duplicate AP entries and missing IP addresses
3 posts · Closed
Hello,
New user, hopefully I'm doing something silly. I'm trying to use the tool to figure out which switches have which devices plugged into them. I selected "Go", the six switches at our "Ruleme" location, let the scan run, and waited for the results.
I have two issues:
- Every one of the Wi-Fi Access Points (APs) that I checked shows up five times in the list. The exact same MAC address and Client HW vendor (IP address and host name are blank).
- No IP addresses!
I have configured the SNMP on our WatchGuard router correctly, as far as I can tell. When a scan runs, the status on the bottom of the app shows "Getting ipNetToMediaTable on 172.18.10.1" (the IP of the router); it doesn't show an error, but the IPs never show up in the app.
I also noted that your site listed the following as three common OID types:
iso.org.dod.internet.mgmt.mib-2.ip.ipNetToPhysicalTable
iso.org.dod.internet.mgmt.mib-2.at.atTable.atEntry
iso.org.dod.internet.mgmt.mib-2.ip.ipNetToMediaTable
This really doesn't correspond to what I see from WatchGuard though.
I'm lost at what to do next.
Any help you can provide would be greatly appreciated.
Thank you!
I just noticed that "MAC address database" list shows multiple entries for each MAC - some of them have blank IPs...
[screenshot]
Depending on how your switches are interconnected, the reason you see one MAC address multiple times might be this:
If, for example, you have device A connected to switch B in turn connected to switch C, it is possible that switch B would report device A, but switch B would too report device A as its MAC address came from switch B. I would recommend untangling this by scanning one switch at a time and see how the reports correspond with reality.
It looks like the Port Mapper was able to pull some MAC-to-IP mappings from the router as there is an IP address on your screen shot. Please try scanning one switch and the router at a time and let us know if the results make sense.