I did a cursory google search, avforums.com in the UK had a posting that said the STP limitation of Sonos meant that only a maximum of 7 switches could be used in a LAN(presumably all the switches have to support STP).

The critical question seems to be, do your switches support STP and what is your cat5(e) topology, I suspect most Sonos homes have structured cabling in which all the cat5(e) goes to a central closet.

As described I have six Sonos ZP's hardwired to switches, one in the basement and one in the attic , all connected to a central switch that is in turn connected to the router that connects to the Internet. This works fine because I upgraded all the inter-connected switches to ones that support STP. The Dell 28XX series is affordable and supports STP. The HP switches are well reviewed as well.


Primary: 818v3+ID41, M6 stereo pair, M SpeakerLink cabling, Sonos+96kHz Cullen, silver DSW
HT: Marantz prepro, 271, DSP3300, 8K SE FL/FR pair, DSP M6x2, DSP320x4 (ceiling), black DSW, 520 RL/RR rear in-walls
Living Room: G65, 640 L/R in-walls, UHD722, MS600
Vac. Home: G61, HD621, 4xDSP3100, DSP3100HC
MDMS:NUC/ROCK+TrueNAS Core 12.0 ZFS file server