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I have a Netgear WNDR3700 with both the 2.4GHz (B/G/N) and 5GHz (A/N) broadcasting. I'd assumed that devices connecting on either channel would work together without issues, but there are some devices (such as my iPhone 4 or HP wireless printer) that will only connect at 2.4GHz, and some that connect at 5GHz. However, it seems that they're segregated on the network, so a computer at 5GHz can't print to the printer, but the iPhone can.

This is causing issues not just with printing, but with AppleTV and so on. Is there a way to have the router let these devices all talk to each other?

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The default configuration for the WNDR3700 allows precisely this, and is how it works with my one. I didn't think it was even possible to segregate them this way. Can you ping devices connected to different radios? – Paul Jan 10 '12 at 3:40

It appears your device has its Wireless/AP Isolation option enabled.

  • NETGEAR (factory shipped) - Setup / Wireless Settings configuration page, disable checkbox Wireless Isolation.

  • DD-WRT - Wireless / Basic Settings configuration page, disable AP Isolation option.

enter image description here

If you do not have access to your WNDR3700's configuration, I am not sure that you'll have any success improving your LAN connectivity.

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Thanks for letting us know - welcome to Super User! :) – studiohack Sep 6 '12 at 3:43

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