If I understand you correctly, you are looking for the offending device ??
From your core device you can try a "sh cdp neighbors detail" and search the output OR from your L2 distribution device you can try a "sh cam " This will point you to the port the MAC is being learned from. That will start to narrow down your search. Repeat this until you find the device.
yes i am looking for that offending device, but its not on the network now (dont know where it came from - could be switched off etc). I want to find out from the mac address the actual device model. is there any way of finding out.
like from registers etc where there is log of mac address.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...