lefty
February 16, 2026, 8:55pm
1
Hi, I have had, for a couple of years, a wired AP6 Pro (wap1) and a meshed AP6 AP (wap2) that were working just fine. Recently, I noticed wap2 was offline and would not reconnect to wap1. I factory reset it, no change.
I have since wired wap2 and it’s up and operating just fine. Every time I unplug the ethernet cable, clients are still connected but it’s not meshing with wap1, so no traffic in/out of internet is possible.
While continuing the troubleshoot, I notice that all wireless clients connected to wap1 are on ch 6 2.4Ghz only. When I run a quick or full scan for wap1, i see the status of both 2.4Ghz and 5Ghz channels so the 5Ghz radio in wap1 is evidently still alive.
I just perhaps connected the dots that’s why wap2 won’t mesh with wap1 is that it requires a 5Ghz connection?
Any ideas how to resolve this or futher troubleshoot?
Thanks
jmszuch
February 16, 2026, 11:37pm
2
I think the meshing does typically require the 5GHz band, specifically for performance reasons.
Something to do that might help confirm if the 5GHz is acting up would be to try setting up an SSID on just the 5GHz band with WAP1 and then trying to connect a device to that SSID. If it doesn’t show up or doesn’t connect then that might better indicate a problem with that AP.
lefty
February 17, 2026, 1:24am
3
Thanks for the reply. I created a new SSID, disabled 5Ghz radios on wap2. All clients reconnect to a mix of wap1/wap2 but there are zero 5Ghz connections.
I believe it confirms that 5Ghz simply isn’t working on my AP6 Pro named wap1. Odd that is scans frequencies and shows results for 5Ghz channels, but it surely isn’t allowing any 5Ghz connections.
Thanks
If you can shift-click on the name of the AP in manage.alta.inc , then run iw phy and post the output here, we can see if the 5 GHz radio is working.
lefty
February 17, 2026, 3:46am
5
Here you go… Thanks!
~ # iw phy
Wiphy phy1
wiphy index: 1
max # scan SSIDs: 10
max scan IEs length: 1300 bytes
max # sched scan SSIDs: 0
max # match sets: 0
max # scan plans: 1
max scan plan interval: -1
max scan plan iterations: 0
Retry short limit: 7
Retry long limit: 4
Coverage class: 0 (up to 0m)
Device supports AP-side u-APSD.
Available Antennas: TX 0xf RX 0xf
Configured Antennas: TX 0xf RX 0xf
Supported interface modes:
* managed
* AP
* AP/VLAN
* monitor
Band 2:
Capabilities: 0x19e7
RX LDPC
HT20/HT40
Dynamic SM Power Save
RX HT20 SGI
RX HT40 SGI
TX STBC
RX STBC 1-stream
Max AMSDU length: 7935 bytes
DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: No restriction (0x00)
HT TX/RX MCS rate indexes supported: 0-31
VHT Capabilities (0x338bf9fa):
Max MPDU length: 11454
Supported Channel Width: 160 MHz, 80+80 MHz
RX LDPC
short GI (80 MHz)
short GI (160/80+80 MHz)
TX STBC
SU Beamformer
SU Beamformee
MU Beamformer
RX antenna pattern consistency
TX antenna pattern consistency
VHT RX MCS set:
1 streams: MCS 0-9
2 streams: MCS 0-9
3 streams: MCS 0-9
4 streams: MCS 0-9
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
VHT RX highest supported: 0 Mbps
VHT TX MCS set:
1 streams: MCS 0-9
2 streams: MCS 0-9
3 streams: MCS 0-9
4 streams: MCS 0-9
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
VHT TX highest supported: 0 Mbps
HE Iftypes: Station AP
HE MAC Capabilities (0x010d9a181040):
+HTC HE Supported
TWT Responder
Dynamic BA Fragementation Level: 1
Minimum Payload size of 128 bytes: 1
BSR
Broadcast TWT
OM Control
Maximum A-MPDU Length Exponent: 3
RX Control Frame to MultiBSS
A-MSDU in A-MPDU
OM Control UL MU Data Disable RX
HE PHY Capabilities: (0x1c604c89ffdb839c110c00):
HE40/HE80/5GHz
HE160/5GHz
HE160/HE80+80/5GHz
LDPC Coding in Payload
HE SU PPDU with 1x HE-LTF and 0.8us GI
STBC Tx <= 80MHz
STBC Rx <= 80MHz
Full Bandwidth UL MU-MIMO
DCM Max Constellation: 1
DCM Max Constellation Rx: 1
SU Beamformer
SU Beamformee
MU Beamformer
Beamformee STS <= 80Mhz: 7
Beamformee STS > 80Mhz: 7
Sounding Dimensions <= 80Mhz: 3
Sounding Dimensions > 80Mhz: 3
Ng = 16 SU Feedback
Ng = 16 MU Feedback
Codebook Size SU Feedback
Codebook Size MU Feedback
PPE Threshold Present
HE SU PPDU & HE PPDU 4x HE-LTF 0.8us GI
Max NC: 3
STBC Rx > 80MHz
HE ER SU PPDU 4x HE-LTF 0.8us GI
HE ER SU PPDU 1x HE-LTF 0.8us GI
TX 1024-QAM
RX 1024-QAM
HE RX MCS and NSS set <= 80 MHz
1 streams: MCS 0-11
2 streams: MCS 0-11
3 streams: MCS 0-11
4 streams: MCS 0-11
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
HE TX MCS and NSS set <= 80 MHz
1 streams: MCS 0-11
2 streams: MCS 0-11
3 streams: MCS 0-11
4 streams: MCS 0-11
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
HE RX MCS and NSS set 160 MHz
1 streams: MCS 0-11
2 streams: MCS 0-11
3 streams: MCS 0-11
4 streams: MCS 0-11
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
HE TX MCS and NSS set 160 MHz
1 streams: MCS 0-11
2 streams: MCS 0-11
3 streams: MCS 0-11
4 streams: MCS 0-11
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
Frequencies:
* 5180 MHz [36] (24.0 dBm)
* 5200 MHz [40] (24.0 dBm)
* 5220 MHz [44] (24.0 dBm)
* 5240 MHz [48] (24.0 dBm)
* 5260 MHz [52] (24.0 dBm)
* 5280 MHz [56] (24.0 dBm)
* 5300 MHz [60] (24.0 dBm)
* 5320 MHz [64] (24.0 dBm)
* 5500 MHz [100] (24.0 dBm)
* 5520 MHz [104] (24.0 dBm)
* 5540 MHz [108] (24.0 dBm)
* 5560 MHz [112] (24.0 dBm)
* 5580 MHz [116] (24.0 dBm)
* 5600 MHz [120] (24.0 dBm)
* 5620 MHz [124] (24.0 dBm)
* 5640 MHz [128] (24.0 dBm)
* 5660 MHz [132] (24.0 dBm)
* 5680 MHz [136] (24.0 dBm)
* 5700 MHz [140] (24.0 dBm)
* 5720 MHz [144] (24.0 dBm)
* 5745 MHz [149] (30.0 dBm)
* 5765 MHz [153] (30.0 dBm)
* 5785 MHz [157] (30.0 dBm)
* 5805 MHz [161] (30.0 dBm)
* 5825 MHz [165] (30.0 dBm)
valid interface combinations:
* #{ AP } <= 17, #{ managed } <= 30, #{ monitor } <= 1,
total <= 17, #channels <= 1, STA/AP BI must match, radar detect widths: { 20 MHz (no HT), 20 MHz, 40 MHz, 80 MHz }
Maximum associated stations in AP mode: 128
Supported extended features:
* [ HIGH_ACCURACY_SCAN ]: high accuracy scan
* [ CONTROL_PORT_OVER_NL80211 ]: control port over nl80211
* [ VLAN_OFFLOAD ]: VLAN offload support
* [ BEACON_PROTECTION ]: beacon protection support
* [ CONTROL_PORT_NO_PREAUTH ]: disable pre-auth over nl80211 control port support
* [ CONTROL_PORT_OVER_NL80211_TX_STATUS ]: tx status for nl80211 control port support
Wiphy phy0
wiphy index: 0
max # scan SSIDs: 10
max scan IEs length: 1300 bytes
max # sched scan SSIDs: 0
max # match sets: 0
max # scan plans: 1
max scan plan interval: -1
max scan plan iterations: 0
Retry short limit: 7
Retry long limit: 4
Coverage class: 0 (up to 0m)
Device supports AP-side u-APSD.
Available Antennas: TX 0x3 RX 0x3
Configured Antennas: TX 0x3 RX 0x3
Supported interface modes:
* managed
* AP
* AP/VLAN
* monitor
Band 1:
Capabilities: 0x19e7
RX LDPC
HT20/HT40
Dynamic SM Power Save
RX HT20 SGI
RX HT40 SGI
TX STBC
RX STBC 1-stream
Max AMSDU length: 7935 bytes
DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: No restriction (0x00)
HT TX/RX MCS rate indexes supported: 0-15
VHT Capabilities (0x33817992):
Max MPDU length: 11454
Supported Channel Width: neither 160 nor 80+80
RX LDPC
TX STBC
SU Beamformer
SU Beamformee
RX antenna pattern consistency
TX antenna pattern consistency
VHT RX MCS set:
1 streams: MCS 0-9
2 streams: MCS 0-9
3 streams: not supported
4 streams: not supported
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
VHT RX highest supported: 0 Mbps
VHT TX MCS set:
1 streams: MCS 0-9
2 streams: MCS 0-9
3 streams: not supported
4 streams: not supported
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
VHT TX highest supported: 0 Mbps
HE Iftypes: Station AP
HE MAC Capabilities (0x010d9a080040):
+HTC HE Supported
TWT Responder
Dynamic BA Fragementation Level: 1
Minimum Payload size of 128 bytes: 1
BSR
OM Control
Maximum A-MPDU Length Exponent: 3
RX Control Frame to MultiBSS
A-MSDU in A-MPDU
HE PHY Capabilities: (0x02600c891dc1838c110c00):
HE40/2.4GHz
LDPC Coding in Payload
HE SU PPDU with 1x HE-LTF and 0.8us GI
STBC Tx <= 80MHz
STBC Rx <= 80MHz
DCM Max Constellation: 1
DCM Max Constellation Rx: 1
SU Beamformer
SU Beamformee
Beamformee STS <= 80Mhz: 7
Sounding Dimensions <= 80Mhz: 1
Ng = 16 SU Feedback
Ng = 16 MU Feedback
Codebook Size SU Feedback
Codebook Size MU Feedback
PPE Threshold Present
HE SU PPDU & HE PPDU 4x HE-LTF 0.8us GI
Max NC: 1
STBC Rx > 80MHz
HE ER SU PPDU 4x HE-LTF 0.8us GI
HE ER SU PPDU 1x HE-LTF 0.8us GI
TX 1024-QAM
RX 1024-QAM
HE RX MCS and NSS set <= 80 MHz
1 streams: MCS 0-11
2 streams: MCS 0-11
3 streams: not supported
4 streams: not supported
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
HE TX MCS and NSS set <= 80 MHz
1 streams: MCS 0-11
2 streams: MCS 0-11
3 streams: not supported
4 streams: not supported
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
PPE Threshold
Frequencies:
* 2412 MHz [1] (30.0 dBm)
* 2417 MHz [2] (30.0 dBm)
* 2422 MHz [3] (30.0 dBm)
* 2427 MHz [4] (30.0 dBm)
* 2432 MHz [5] (30.0 dBm)
* 2437 MHz [6] (30.0 dBm)
* 2442 MHz [7] (30.0 dBm)
* 2447 MHz [8] (30.0 dBm)
* 2452 MHz [9] (30.0 dBm)
* 2457 MHz [10] (30.0 dBm)
* 2462 MHz [11] (30.0 dBm)
valid interface combinations:
* #{ AP } <= 17, #{ managed } <= 30, #{ monitor } <= 1,
total <= 17, #channels <= 1, STA/AP BI must match, radar detect widths: { 20 MHz (no HT), 20 MHz, 40 MHz, 80 MHz }
Maximum associated stations in AP mode: 128
Supported extended features:
* [ HIGH_ACCURACY_SCAN ]: high accuracy scan
* [ CONTROL_PORT_OVER_NL80211 ]: control port over nl80211
* [ VLAN_OFFLOAD ]: VLAN offload support
* [ BEACON_PROTECTION ]: beacon protection support
* [ CONTROL_PORT_NO_PREAUTH ]: disable pre-auth over nl80211 control port support
* [ CONTROL_PORT_OVER_NL80211_TX_STATUS ]: tx status for nl80211 control port support
~ #
Looks like the 5 GHz radio is at least enumerating to the system, and functional.
The most common issue at this point is likely one of a few things:
Your SSID’s and your AP’s colors do not match up. You can watch https://www.youtube.com/watch?v=uZBzZWr5iEY for guidance on this.
Your 5 GHz radio is disabled on your AP (click on the AP’s name in the Network page, then look at the channel by 5 GHz.
You have the band set to 2 GHz only on the SSID (Settings→WiFi→Your SSID→Advanced Settings)
lefty
February 17, 2026, 4:17am
7
Hi, as requested:
my switch, both access points, and wifi SSID’s are all using the default black… Screen shots attached.
5Ghz radios are set to auto/auto and wap1 is on 5Ghz channel 52 as can be seen in the attached screen shot.
It’s set to both as can be seen in the attached screen shot.
Any other ideas or info I can provide?
Thanks
