Hi there
I am new to this forum and recently started to learn Wireshark. I have some basic knowledge of networking (DHCP, DNS, TCP/IP) and of its hardware. I use a Fritzbox-router, 3 Zyxel POE-switches with 3 Zyxel Access-Points.
the issue
I randomly experience connection interruptions within my network. The devices (mostly notebooks and iPads) are still connected to Wifi but they cannot reach any website nor a local device. After I disconnect and reconnect to Wifi it works fine again. Nor the logs of the switches, router or Access points show any hardware-related loss of connections, I even exchanged most cables to rule out any bad cabling.
I think I can exclude any hardware-related reason which cause the interruptions. I dont see any obvious errors in the logs like IP-address conflicts or a specific service causing the interruptions.
recently I ran Wireshark on my MacBook Pro M1 (running macos 13.1 (22C65)). I used my iPad 8th Gen running iPad OS 16.3.1. Suddenly the iPad couldnt open websites anymore and the TV streaming-app stopped working.
I noticed that there a lot of ARP-requests from and to 192.168.1.140 (iPad) and 192.168.1.77 (Apple TV), the MacBook has the IP 192.168.1.25. From line 603 there a lot of TCP-retransmission but honestly I cant read much out of it.
I would be glad to get some help in order to dig depper into the issue, it is driving me nuts because I dont know where to start.
all the best
Andrew
