Change all lights to flash together simultaneously.
Change all lights to flash together simultaneously.
The connected ports on my network switch display flashing patterns consistently, but they change independently depending on traffic levels from individual devices. There’s no looped connection in the setup, and running Wireshark hasn’t revealed unusual widespread requests—only standard ARP packets and general traffic appear. It seems there might be a specific type of traffic or packet that triggers simultaneous flashes across all ports. Could anyone have experienced similar behavior?
What ARP messages appear on your network? On a small setup they’re rare. Flashing simultaneously could mean loop, broadcast, STP, or multicast. If you notice constant requests, it’s likely a broadcast. Multicast might be happening due to many IoT devices sending data. Without more details, we can’t pinpoint the exact cause. Try removing broadcast and multicast entries in Wireshark for clearer results.
Do you possess media servers or other equipment that utilize uPNP? With today's devices a significant number broadcast their features over the network continuously, leading to observing this behavior. For instance, I have multiple devices on my network that enable Chromecast, Airplay, etc., which introduce additional background data traffic.
My setup includes a Plex server, Smart TVs, and Sky Q devices that can be streamed to.
They are strong possibilities for the traffic, along with the router you previously noted.
It seems like the ARP announcement is being sent. You should examine the capture file to identify the target IP address it's attempting to reach, which can help determine the issue. It appears the system is searching for a device but isn't succeeding.