![]() If you don't see ping responses from the Express for every ping request, it means multicasts aren't getting from your Motorola box to your AirPort Express reliably. Note whether you reliably see ping responses from the IP address of your AirPort Express. You should see duplicate ping responses, one from each device on your network. No use fighting a bug that may already have been fixed.įrom the XP box, ping the all-hosts multicast address 224.0.0.1. Verify that your Express is running firmware 7.4.2, which is the latest. Here are some things to try, which will be useful data points in figuring out the underlying problem: Your symptoms suggest multicast or Bonjour aren't working right on that network. I also tried with an ASUS RT-A66U with the same results as the WNDR3700. Check out your router! If it's a run of the mill home router and not by Apple, chances are that it blocks the Bonjour multicasts by default - and you may not be able to configure it not to. I have seen many posts about disappearing Airport Express from Airplay and that Airport Utility cannot find the units - this post may provide a hint. This is why I installed Cat6 throughout and shifted to GigE in the first place. It did 'work' before when all was wirelessly connected, but then I had drop out issues due to WiFi interference and low signal strength in some rooms (big 19th century house with brick walls). Now I am just waiting for Apple's rumored 24-bit/96 KHz update for Highdef audio -). It turned out to be that the home router (Netgear WNDR3700) was blocking Bonjour multicasts over its switched ethernet ports and WiFi (although set up as no to, according to Netgear support, no GMPL spoofing etc).Ĭonnecting the ethernet ports to a bona fide switch (LinkSys LGS124) instead and using the Netgear router as a WiFi Access Point only, everything started to work and has been rock solid ever since! Never a drop, always appearing in iTunes (Windows) and iOS devices and I now have a super multiroom audio system with four Airport Express units. Here's a tip for some of you that have issues with Airport Expresses dropping off Airport Utility/Airplay:Īfter months of my ethernet-connected Airport Expresses dropping off Airplay in iTunes, and only appearing in about 2 minutes after a power off/on in Airport Utility/iTunes (Windows), I finally got it all working. ![]() My friend's PC doesn't have a wireless card and so I can't try Spiff's other suggestion. Mulitcast ping on 224.0.0.1, per Spiff's question, does get responses from the Airport Express as long as the WinXP firewall is turned off (which is as it should be I suspect - legitimate Bonjour requests should benefit from the Firewall exceptions above). Also, the symptoms are the same when the WinXP Firewall is switched off. However iTunes (iTunes.exe), Airport (APAgent.exe), AirPort Utility (APUtility.exe), Bonjour (UDP 5353) and the Bonjour Service (mDNSResponder.exe) are all registered exceptions. If the AirPort express is connected wired, then it works. It currently seems that the problem is that Bonjour doesn't work across from the router's wireless LAN to it's wired LAN.
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