Oh my gosh thank you so much for this! I haven't explored this software in all of the years I knew about it, I had no idea there were network specific shapes!
Is there way to add description to one or both line endpoints (port numbers, etc) without adding separate text label object? UPD: I've figured out how to do it. Just need to double-click on the region of a line where I need to place a label
Sound was not great and why do you need two routers? If the router is designed to be connected to the internet. Surely the second one should be a switch?