AFC Channels on GS-BE18000

[VidMan]

I recently got the ASUS GS-BE18000, which fully supports Automated Frequency Coordination (AFC) to increase the transmit power of the 6GHz band based on location. My issue is that the router is saying that the allowed channels do not permit AFC to be turned on for a channel bandwidth greater than 40MHz, which severely restricts the speed benefits of the 6GHz band. Unfortunately, the native interface doesn't let you directly see which channels are allowed based on the location query to the AFC database. Is there any way to ssh into the routers, similar to Ubiquiti APs, to find more detailed information about the AFC status? Manually going through all the channels allows AFC to be enabled for only one 40MHz channel, so either something isn't working correctly or I'm extremely unlucky with neighboring stations.

 

[sha1dy]

you definitely can ssh to the router: Administration -> System -> Enable SSH, don't know how to find AFC information, sadly

 

[sha1dy]

actually did some tinkering myself (I have ASUS GS-BE18000 too), in my case AFC shows "Standard Power mode"

you can check if latest AFC request was successful by running "afc_cli -c stored" in the shell and get the json response from AFC by doing "cat /tmp/afc_response.json"

 

[sha1dy]

so this is I got in my case from AFC server:
{
"availableSpectrumInquiryResponses": [
{
"availabilityExpireTime": "2025-07-21T23:43:03Z",
"availableChannelInfo": [
{
"channelCfi": [
1,
5,
9,
13,
17,
21,
25,
29,
33,
37,
41,
45,
49,
53,
57,
61,
65,
69,
73,
77,
81,
85,
89,
93,
117,
121,
125,
129,
133,
137,
141,
145,
149,
153,
157,
161,
165,
169,
173,
177,
181
],
"globalOperatingClass": 131,
"maxEirp": [
36,
36,
29.8,
29.9,
36,
33.6,
33.6,
36,
36,
36,
36,
36,
36,
36,
36,
36,
36,
36,
36,
35.1,
35.2,
36,
36,
36,
36,
36,
36,
36,
36,
36,
36,
34.8,
34.8,
36,
36,
36,
36,
36,
36,
36,
36
]
},
{
"channelCfi": [
3,
11,
19,
27,
35,
43,
51,
59,
67,
75,
83,
91,
123,
131,
139,
147,
155,
163,
171,
179
],
"globalOperatingClass": 132,
"maxEirp": [
36,
32.9,
36,
36,
36,
36,
36,
36,
36,
36,
36,
36,
36,
36,
36,
36,
36,
36,
36,
36
]
},
{
"channelCfi": [
7,
23,
39,
55,
71,
87,
135,
151,
167
],
"globalOperatingClass": 133,
"maxEirp": [
35.8,
36,
36,
36,
36,
36,
36,
36,
36
]
},
{
"channelCfi": [
15,
47,
79,
143
],
"globalOperatingClass": 134,
"maxEirp": [
36,
36,
36,
36
]
},
{
"channelCfi": [
31,
63
],
"globalOperatingClass": 137,
"maxEirp": [
36,
36
]
}
],
"availableFrequencyInfo": [
{
"frequencyRange": {
"highFrequency": 5989,
"lowFrequency": 5925
},
"maxPsd": 22.9
},
{
"frequencyRange": {
"highFrequency": 6009,
"lowFrequency": 5989
},
"maxPsd": 16.8
},
{
"frequencyRange": {
"highFrequency": 6020,
"lowFrequency": 6009
},
"maxPsd": 16.9
},
{
"frequencyRange": {
"highFrequency": 6048,
"lowFrequency": 6020
},
"maxPsd": 22.9
},
{
"frequencyRange": {
"highFrequency": 6058,
"lowFrequency": 6048
},
"maxPsd": 20.5
},
{
"frequencyRange": {
"highFrequency": 6079,
"lowFrequency": 6058
},
"maxPsd": 20.6
},
{
"frequencyRange": {
"highFrequency": 6330,
"lowFrequency": 6079
},
"maxPsd": 22.9
},
{
"frequencyRange": {
"highFrequency": 6351,
"lowFrequency": 6330
},
"maxPsd": 22.1
},
{
"frequencyRange": {
"highFrequency": 6361,
"lowFrequency": 6351
},
"maxPsd": 22.2
},
{
"frequencyRange": {
"highFrequency": 6425,
"lowFrequency": 6361
},
"maxPsd": 22.9
},
{
"frequencyRange": {
"highFrequency": 6682,
"lowFrequency": 6525
},
"maxPsd": 22.9
},
{
"frequencyRange": {
"highFrequency": 6688,
"lowFrequency": 6682
},
"maxPsd": 21.8
},
{
"frequencyRange": {
"highFrequency": 6865,
"lowFrequency": 6688
},
"maxPsd": 22.9
}
],
"requestId": "1704067300",
"response": {
"responseCode": 0,
"shortDescription": "Success"
},
"rulesetId": "US_47_CFR_PART_15_SUBPART_E"
}
],
"version": "1.4"
}

so In my case, the router choose channel 37 for 6Ghz band, where, according to this json, I'm getting full power for 20 Mhz, and there is no channel where I can get full power for 160 and 320 Mhz at the same time, so I will need to either select a channel with full power only for 160 Mhz clients, or for 320 Mhz clients only And looks like ASUS firmware doesn't take AFC response into account when selecting channels for 6 Ghz, so I will have to select the channel manually

 

[sha1dy]

and looks like ASUS ui has a bug where it only displays 20 Mhz channels if I want to set the channel manually. So I cant manually select 160Mhz channel that has full power authorization