Opened 5 years ago

Closed 4 years ago

#13050 closed defect (fixed)

Atheros AR9287, TP-Link TL-MR3420 v2, select wifi channel "auto" is useless

Reported by: guillere@… Owned by: developers
Priority: normal Milestone:
Component: kernel Version: Trunk
Keywords: AR9287 MR3420 channel auto Cc:


I select auto mode in my router MR3420 TPLINK v2.
And wifi works but it select the first channel ALWAIS!
Actualy the channel 1 is the most saturated channel

A scan in network say:
Channel 1 contains 10 APs
Channel 6 contains 10 APs
Channel 11 contains 4 APs
Channel 9 contains 3 APs
Channel 10 contains 2 APs
Channel 4 contains 2 APs
Channel 5 contains 1 APs

Logic dictate TO USE (2,3,7,8)
But channel 1 is selected instad...

Hardware: TL-MR3420
wifi: Atheros AR9287 (check in openwrt page...)
GUI: LuCI 0.11 Branch (0.11+svn9599)
Kernel: 3.3.8

PD: sory my bad ingles
Greetings Guillermo Reisch

Attachments (0)

Change History (3)

comment:1 Changed 5 years ago by Nilfred <nilfred@…>

Only channels 1, 6 and 11 should be selected.
Those who select others channels must be shot on sight.

Channel 01 contains 10 APs
Channel 02 contains 0 APs
Channel 03 contains 0 APs
Channel 1: 10 AP and no interference from adjacent channels

Channel 04 contains 2 APs
Channel 05 contains 1 APs
Channel 06 contains 10 APs
Channel 07 contains 0 APs
Channel 08 contains 0 APs
Channel 6: 13 AP and interference from adjacent channels

Channel 09 contains 3 APs
Channel 10 contains 2 APs
Channel 11 contains 4 APs
Channel 11: 9 AP and interference from adjacent channels

I will bet for channel 1 too with 1/10 of usable bandwidth.
Convince those who are on 4,5 to move at 6; and those who are on 9,10 to move at 11 (blow with the butt of your shotgun if necessary)

BTW don't use more power than the most powerful of yours clients. Try a 10 mW setting if feels comfortable to you.

comment:2 Changed 4 years ago by Sorbe

The real problem here is that it OpenWRT does not auto-select from channels 1,6,11 at all. You ALWAYS get channel 1 on the 2.4 GHz band and channel 36 on the 5 GHz band, even if two openwrt routers are right next to each other.

comment:3 Changed 4 years ago by nbd

  • Resolution set to fixed
  • Status changed from new to closed

auto channel selection has been added in r38915

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