Query: Trying to locate the device where device (ip) is connecting to

[Nav_tellme]

Hi all,

So my network looks like this : Core switch>>> Access Switch >> Unmanaged switch or Arupa Wireless

DHCP is configured on the core switch.  There was ip subnet change done. I can still see a few devices trying to connect using the old IP range.

In show arp on core switch i see the IP addresses, but the mac shows as 00000-00000 Dynamic. There is no port mentioned.

Is there a way i can find out where this IP is coming from, I mean on which port and on which access switch this device is connected to ?

core switch is HP J9850A Switch 5406Rzl2

access switch is HP J9776A 2530-24G Switch

[support_s]

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