Talking about switching, all broadcast "frames" would have a source mac address (specific to the NIC / device) and a destination of all 1's. You may have to locate which port the mac address is being learned from and follow the switched network path to isolate the device that is originating the broadcasts.
You might want to consider breaking up a larger network into smaller broadcast domains using VLAN's if this is consistently happening
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...