Different in LuCI displayed channel vs config channel which is right?

Installing and Using OpenWrt Network and Wireless Configuration
1

I am running a recently snapshot (built a day ago) on a Redmi AX6000. I have the 5 GHz radio configured on channel 100 in /etc/config/wireless yet LuCI is showing that it is running on 104.

# grep channel /etc/config/wireless
	option channel '1'
	option channel '100'

typo
typo708×299 34.3 KB

Running iwinfo also thinks the radio is on channel 104. Is this a bug?

# iwinfo
phy1-ap0  ESSID: "myssid"
          Access Point: 24:xx:xx:xx:xx:xx
          Mode: Master  Channel: 104 (5.520 GHz)
          Center Channel 1: 114 2: unknown
          Tx-Power: 24 dBm  Link Quality: 51/70
          Signal: -59 dBm  Noise: -92 dBm
          Bit Rate: 483.5 MBit/s
          Encryption: mixed WPA2/WPA3 PSK/SAE (CCMP)
          Type: nl80211  HW Mode(s): 802.11nacax
          Hardware: 14C3:7986 14C3:7986 [MediaTek MT7986]
          TX power offset: none
          Frequency offset: none
          Supports VAPs: yes  PHY name: phy1
2

How many MHz wide (it matters)?

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3

Width is 160MHz

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4

There is a designated 160 MHz block which covers from 100 to 128, centered on 114. Configuring any channel from 100 to 128 results in the same on-air results. The driver may choose a different "master" channel based on neighbors detected, so the neighbors can see the other's beacon packets and better coordinate time sharing of the same spectrum. Beacon packets are restricted to 20 MHz regardless of the operating mode for data packets.

5 Likes
5

Is there any way in OpenWrt to force a particular master channel? My router is placed in a location where it doesn't see much interference, but the outer stations do. Unfortunately, it is the router picking the master channel and it doesn't appear to take advice.