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My older Airport Express (b/g) was cutting off from being seen in iTunes and generally not performing well as a music server or a print server.

Purchased a new Express and still one or some of the computers will see it for an hour or so and then it goes away.

99% of the time I can not see it in Airport Utility when I am 5 feet from it.

Network setup:

EnGenius ESR-9752 with latest firmware is the main AP. This has wired and wireless connections.

Both Airports have static IPs and are on the same subnet and all set to the same channel (1) as the ESR-9752. I can see them all from the ESR-9752. APXn (Maddie) has the latest firmware, Airtunes turned on and is connected to my new speakers.

I know Maddie is working, because I am also using the ethernet port to connect our BlueRay player to the internet through it's connection. Maddie this morning was playing music.

I can not see Maddie from the Airport Utility or when I try to connect using her MAC.

APXb/g (Xena) is sitting in a room 45 feet away pretending to extend the network (bruno) but I think she just sits there with a green light to make me feel better.

We no not have any cordless phones in the apt. We are a cell phone only apt.

My computer will sometimes see Maddie and play. None of the others, nor will our iPhones see Maddie.

I accepted the fact that my 5 year old APX may be going and shelled out for a new one - but that does not seem to be the trick.

With 2 AP Expresses here - how can I reliably stream the music from iTunes on all of our devices to at least one of them?

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I assume that both AirPort Expresses are in client mode, extending the network of the EnGenius router? support.apple.com/kb/HT2272 –  Nathan Greenstein Jan 23 '11 at 23:32
    
Yes. All in client mode. Not happy that I can't extend something not Apple, but got over that frustration a while ago. –  eric.s Jan 24 '11 at 1:17
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1 Answer

up vote 1 down vote accepted

I've seen that on a couple of them, and the problem seems to be tied to IPv6 support. Mine would drop connections randomly, sometimes requiring a reboot of the AirPort Express before it would return to the network.

Turning off IPv6 entirely in the Network Control panel of our Macs seems to have fixed it. I can stream music to it for hours now without problems, so give that a try.

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Worked like a charm. The computers and all devices can see it. Hoping it lasts - but this is a lot further than I got before. Thanks! –  eric.s Jan 24 '11 at 0:48
    
The only thing I've seen that affects mine now is when I'm moving a lot of other data via wireless, or the wife is streaming something to her computer so the music isn't filling the buffer in the Express and it eventually runs dry. It will halt playing at that point but should eventually resync. –  Greg Jan 24 '11 at 0:57
    
Ah. It lasted for a day. No machines can see it. Airport Utility can't see it. Steady green light and router can see it and BlueRay gets an ip from it's ethernet for Netflix access. –  eric.s Jan 26 '11 at 4:44
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