Sonos Digital Music System User Manual page 108

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1. Check Firewall
Firewall software installed on the computer is blocking the ports that Sonos uses to
operate. The first step is to disable all your firewalls and try again. Click Firewall
InformationFirewall Information for additional information. If this resolves the problem,
then configure your firewall to work with the Sonos music system. If this does not
resolve the problem, proceed to step 2.
2. Check Router
The following simple setup will bypass your router's switch to determine if there are
any router configuration issues (note that the ZonePlayer and the computer will still
have Internet access in this configuration):
• Double-check that the cable modem or DSL modem (or whatever broadband
connection you have) is connected to the router's WAN (Internet) port. Tempo-
rarily remove any other components that are wired to your network. Wire the
computer directly to the back of the ZonePlayer and wire the ZonePlayer direct-
ly to one of the LAN ports. Always power cycle the ZonePlayer by unplugging it
and plugging it back in whenever you change your network configuration.
• If you are not using a router, see http://faq.sonos.com/norouter.
3. Check Wiring
Check the link/activity lights on the router and the ZonePlayer. They should be
displaying green and there should be blinking activity lights. If the green link lights are
not lit, try a different port. If the light still fails to light, try a different cable.
4. DHCP/AutoIP Issues
It is possible that the ZonePlayer or PC has failed to obtain a valid IP address for your
network. This can be caused if the DHCP server on your router is unable to lease an IP
address to the ZonePlayer, forcing the ZonePlayer to use Auto IP. You can use the
Sonos Digital Music System User Guide