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non-overlapping wifi channels?
RE WiFi channels, I understand that CH1, 6, &11 do not overlap, BUT can someone explain why ch1, 6, &11 are considered NON-OVERLAPPING and ch2, 7, &12 or ch3, 8, &13 are not. Technically, they do not overlap each other either. Also when speaking about non-overlapping why are just those channels considered when they DO overlap all the rest 2, 3, 4, 5, 7, 8, 9 ,10, 12, &13?
Is there some kind of unwritten rule that no one will use anything but 1, 6, &11 and that ppl using the same channel will be more than 330' apart?
no answer yet - come on!!
- 1 overlaps 2,3,4,5 -- 6 overlaps 2,3,4,5,7,8,9,10 -- 11 overlaps 7,8,9,10,12,13
I have 10 strong signals in my neighborhood. Some not on 1,6,11, so it is impossible to implement. AND those only apply for b. g/n has 1,5,9,13 and n has 3,11. So basically we have long outgrown this idea. No one (hardly) is on b anymore unless router falls back. So my n router should use 3 or 11 and forget about interference 'cause it will always be there. I'm going for ch 3. only 1 on ch3, 5 on ch6, 3 on ch11.
4 Answers
- Anonymous9 years agoFavorite Answer
Read:
http://en.wikipedia.org/wiki/List_of_WLAN_channels
Using overlapping is usually fine, it entirely depends on how much noise is out there ;)
- 187Lv 69 years ago
"why are just those channels considered when they DO overlap all the rest 2, 3, 4, 5, 7, 8, 9 ,10, 12, &13?" <------------ That's 100% incorrect
They do not over lap in any way shape or form. In the 2.4ghz spectrum it works like this:
Channel 1 covers 2-5 = 2412 mhz
Channel 6 covers 7-10 =2437 mhz
Channel 11 covers 12-13 = 2462 mhz
The protocol requires 25mhz of separation
Using the non recommended channels (2,3,4,5 etc etc ) will cause interference especially if you're close enough to another wifi signal that isn't using 1,6,11 as they should be
This is most definitely asked on the ccna exams!
Source(s): ccna. net+ - efflandtLv 79 years ago
Due to spread spectrum, it is recommended to pick a channel at least 5 channels from an occupied channel. But sometimes that is not possible if others are using 1, 6, 11, so then you need to try a channel between the weakest other channels in use. Some wireless routers can be set automatically pick the clearest channel instead of manually setting a channel.
- ?Lv 44 years ago
acquire a application which will seek for and exhibit all the interior of sight wifi indicators and exhibit the channels they are using. (that's what I did, now i are not getting a dropped connection relatively as in many situations.)
