I've got an issue with my iMac…
Let me explain the configuration:
- The router is connected to the internet, the WiFi is turned off.
- Time Capsule is connected to the router with an ethernet cable, it's in Bridge Mode, the WiFi is set to 802.11 n only, the 5GHz is set to channel 36 and the 2.4GHz is set to channel 8.
- Airport Express is connected to the network created from Time Capsule, it extends the network in 2.4GHz (this AirPort Express doesn't support dual bands).
- Apple TV is connected to the network in 5GHz.
- iPad 2 is connected to the network in 2.4GHz.
- iMac is connected to the network in 5GHz.
- iPhone 4S is connected to the network in 2.4GHz.
- MacBook Pro is connected to the network in 2.4GHz.
- The printer is connected to the network in 2.4GHz.
The trouble is:
- When the iMac is in sleep mode, after a few hours it dissapear from the network. So I cannot access it while on the go with my iPhone through 3G network, neither from my Macbook Pro on the same network.
Well, I hope everything is clear to understand…
Thanks in advance
Best Answer
I found someone else with this specific problem. My understanding is that Apple's Airport Base Stations simply "forget" the previously attached computer.
Two things to check:
The work around: using either and application or System Preferences > Energy Save schedule the iMac to "wake up" and turn back off every 6 hours or so if not being used. This should re-up the IP. Alternatively, DD-WRT router software supports WOL out of the box. Wireless WOL is not part of the spec, however, I believe wireless WOL is an Apple deal.