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

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

NOTE (6-7-22): Please download the flows.json file again if you did prior to 10AM June 7th. The original one was not correct and will possibly break your node-red install. Thanks to Rohan Karamandi for catching it for me. NOTE (6-9-22): Thanks to the help of Rohan Karamandi, the flows have been updated to now create… Continue reading Meraki MT, MQTT, Node-Red & Home Assistant Auto Discovery

Meraki, 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