I am using Linksys EA 6900 in home setup. There are multiple devices like TV, Phones, Tablet, Wireless speakers connected to router via 2.4 & 5 GHz channel.
I started to observe problems with setup - like few devices not being able to access others - when I enabled guest access on 2.4 channel.
When the guest network is turned off, all works fine.
I checked the setup in WiFi analyzer, it shows that the two networks (main 2.4 & guest 2.4) are operating on same channel (4). And I think its root of all problems.
I cannot find any option on the admin pages of router that would allow me to set separate channels for the two networks.
Any idea how to do this?
EDIT: As pointed out, this is most probably not issue with wifi channels. I was looking around and found : http://forum.xda-developers.com/showthread.php?t=1371794 Somehow MAC and IP of gateway was somehow confused by device.
As I observed, the MAC address of the two SSIDs(main & guest) differ by only last digit, so could it be the case? The problem was observed twice, once when Android tablet was not ping'able and other time when only the tablet was ping'able from an wired desktop.
After turning off the guest wifi, the problem resolved in few seconds, everything was working well. The 5 GHz devices are unaffected by the problem.