General, Home Assistant, IoT, MQTT, Node-Red, Tools, Wireshark

Meraki MT, MQTT, Node-Red & Home Assistant Auto Discovery

UPDATED (10/20/23)! please download the flow file from here for updated flow configs for MT14/15 as well as the MT40! NOTE (6-9-22): Thanks to the help of Rohan Karamandi, the flows have been updated to now create device entities in Home Assistant! You can now see each MT and all its associated telemetry, as well… Continue reading Meraki MT, MQTT, Node-Red & Home Assistant Auto Discovery

Wifi, Wireshark

Multicast over Wireless

Multicast has brought a lot of efficiencies to IP networks. But multicast wasn’t designed for wireless, and especially isn’t well suited for high-bandwidth multicast applications like video. I'll cover the challenges of multicast over wireless and design considerations. But first, an overview of multicast: To level set, I'll briefly cover IP multicast. For the purposes… Continue reading Multicast over Wireless

Wifi, Wireshark

Using editcap to prune a packet capture

This is just a quick one. I recently needed to filter out a couple packet captures of unneeded frames/packets for some training material. I had unfortunately captured a crap ton of data though and really didn't want to post the whole 20M pcap file. I ran across the wireshark function called "editcap". There is a… Continue reading Using editcap to prune a packet capture