I've been working on a networking problem where multiple workstations have a brief interruption in their network connection, (as indicated by a timeout on a ping -t.) To make a long story short, I was watching wireshark when this happened and I was wondering if someone could point me in the right direction as to what would cause this.
I was using wireshark on a laptop plugged into my switch. The switch is managed and I had port mirroring from one of my network printers ports so that I could monitor traffic going to the port belonging to the printer. The reason I chose the printers port on the switch is because when this anomaly happens the printer will usually not respond to pings for 30 sec to 1 min. So I wanted to see if a jabbering nic someplace is causing it.
What is strange about this, (and I attached a screenshot of the wireshark capture while this was happening,) is that the printers static ip is 192.168.1.145.
If you notice in the screenshot, ( at time of 1140,) i'm sniffing traffic destined for 192.168.1.39, (which is a time card program kiosk at my facility.) Wny was the printer at 192.168.1.145 receiving traffic destined for 192.168.1.39?
Is this a bad switch? A bad nic in the server that transmitted the packet? Is it something else entirely. Any help would be appreciated.