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Is it normal to see negative channel cost values?
Is it normal to see negative channel cost values?
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03-22-2019 04:50 PM
This is taken from an AP230 running 8.2r4:
Lowest cost channel: 120, lowest-cost: -1280
Channel 36 Cost: -1280
Channel 40 Cost: 1309
Channel 44 Cost: 792
Channel 48 Cost: 1055
Channel 52 Cost: 796
Channel 56 Cost: 279
Channel 60 Cost: 1039
Channel 64 Cost: 19
Channel 100 Cost: 793
Channel 104 Cost: 275
Channel 108 Cost: 23
Channel 112 Cost: 545
Channel 116 Cost: -1280
Channel 120 Cost: -1280
Channel 124 Cost: 0
Channel 128 Cost: 790
Channel 132 Cost: 23
Channel 136 Cost: 525
Channel 140 Cost: -1265
Channel 149 Cost: 783
Channel 153 Cost: 271
Channel 157 Cost: 10
Not all my AP230s look like this, but many do. I don't see this on any other model running any other HoveOS version.
Thank you.
4 REPLIES 4
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03-26-2019 11:22 PM
Hello Sam,
I uploaded the tech data to my case as requested.
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03-25-2019 07:01 PM
I see you have a case open for this, would you be able to run the following debugs on the CLI of the AP, let the AP run as normal for 5 minutes, and then pull tech data and attach that to the case for review?
Debugs:
_kdebug wifi-driver wifi0 awemsglevel ascp
_kdebug wifi-driver wifi1 awemsglevel ascp
This guide reviews how to get tech data in HiveManager: https://thehivecommunity.aerohive.com/s/article/How-to-download-tech-data-in-HiveManager
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02-19-2025 08:18 AM
Hi, I know this is old but we are seeing negative channel costs as well. Is this normal? Should I open a ticket with support? We have DFS enabled and I think it should be using one of those instead of the crowded channel 44. Thank you!
sh acs chann
wifi0 (14):
This interface did not finish scanning all available channels.
wifi1 (16):
State: RUN
Lowest cost channel: 44, lowest-cost: -39
Channel 36 Cost: -39
Channel 40 Cost: -25
Channel 44 Cost: -39
Channel 48 Cost: -24
Channel 52 Cost: -39
Channel 56 Cost: 57
Channel 60 Cost: -39
Channel 64 Cost: -11
Channel 100 Cost: -39
Channel 104 Cost: -39
Channel 108 Cost: 389
Channel 112 Cost: 375
Channel 116 Cost: -35
Channel 120 Cost: -39
Channel 124 Cost: -39
Channel 128 Cost: -39
Channel 132 Cost: -39
Channel 136 Cost: -39
Channel 140 Cost: -39
Channel 144 Cost: -39
Channel 149 Cost: -31
Channel 153 Cost: -39
Channel 157 Cost: -39
Channel 161 Cost: -24
Channel 165 Cost: -39
Interface Channel select state Primary channel Channel width Power ctrl state Tx power(dbm) Use Last Selection
--------- --------------------- ---------------- ------------- --------------------- ------------- ---------------------
Wifi0 Disable(Link down) Down 20 Disable(Link down) Down Channel:No Power:No
Wifi1 Enable 44 20 Enable 11 Channel:No Power:No
There is no ACSP information for radio (wifi2) in adsp sensor mode.
sh acs neig
wifi0(14) ACSP neighbor list (0/384):
wifi1(16) ACSP neighbor list (35/384):
Bssid Mode Ssid/Hive Chan Rssi(dBm) Aerohive AP CU CRC STA Channel-width VID NVID
bc96:e508:adb6 Access DADsTMOBILE 36 -88 no -- -- -- 80 - -
be96:e578:adb6 Access 36 -88 no -- -- -- 80 - -
bc30:7ebc:603c Access ClickShare-187172027... 36 -89 no -- -- -- 20 - -
40e1:e46b:dca3 Access Mami_Home 40 -92 no -- -- -- 80 - -
0e93:7c62:5f22 Access 44 -91 no -- -- -- 80 - -
08b4:b10d:041c Access Front Office Nest Ro... 149 -84 no -- -- -- 80 - -
9058:512a:a319 Access 157 -91 no -- -- -- 80 - -
9058:512a:a316 Access DASizemore 157 -91 no -- -- -- 80 - -
9058:512a:a31c Access 157 -92 no -- -- -- 80 - -
4c23:1a16:3534 Access CDE-PRIVATE 161 -81 yes 5 0 0 20 - -
4c23:1a16:3535 Access 161 -82 yes 3 0 0 20 - -
4c23:1a16:3536 Access CDE-CORP 161 -81 yes 5 0 0 20 - -
40e1:e46b:dca4 Access Mami_Home 161 -90 no -- -- -- 80 - -
52e1:e46b:dca4 Access 161 -89 no -- -- -- 80 - -
0693:970a:1b03 Access Keyes 44 -91 no -- -- -- 80 - -
1093:970a:1b03 Access 44 -91 no -- -- -- 80 - -
1c93:7c62:5f22 Access Lan Solo 44 -91 no -- -- -- 80 - -
1693:7c62:5f22 Access 44 -92 no -- -- -- 80 - -
0a93:7c62:5f22 Access xfinitywifi 44 -92 no -- -- -- 80 - -
1293:7c62:5f22 Access Xfinity Mobile 44 -91 no -- -- -- 80 - -
a498:13cf:8248 Access Journey 157 -92 no -- -- -- 80 - -
3485:84b0:a825 Access CDE-PRIVATE 48 -82 yes 3 0 0 20 - -
3485:84b0:a827 Access CDE-CORP 48 -82 yes 3 0 0 20 - -
3485:84b0:a828 Access Control-Rm-1C 48 -82 yes 3 0 0 20 - -
3485:84b0:a826 Access 48 -82 yes 0 0 0 20 - -
9058:512a:a31b Access 157 -91 no -- -- -- 80 - -
0ab4:b10d:041d Access 149 -83 no -- -- -- 80 - -
0ab4:b10c:fdc1 Access 149 -91 no -- -- -- 80 - -
3485:84b0:a824 Access CDE-GUEST 48 -82 yes 3 0 0 20 - -
2880:a296:53f0 Access Verizon-M2100-53F0 44 -91 no -- -- -- 80 - -
9058:513a:e7bc Access Zarandzoro 157 -91 no -- -- -- 80 - -
9058:513a:e7c2 Access 157 -92 no -- -- -- 80 - -
9058:513a:e7bf Access 157 -92 no -- -- -- 80 - -
ba98:13cf:8248 Access 157 -91 no -- -- -- 80 - -
9058:513a:e7c1 Access 157 -92 no -- -- -- 80 - -
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02-14-2025 02:52 PM
Hi, I know this is old but we are seeing negative channel costs as well. Is this normal? Should I open a ticket with support? We have DFS enabled and I think it should be using one of those instead of the crowded channel 44. Thank you!
sh acs chann
wifi0 (14):
This interface did not finish scanning all available channels.
wifi1 (16):
State: RUN
Lowest cost channel: 44, lowest-cost: -39
Channel 36 Cost: -39
Channel 40 Cost: -25
Channel 44 Cost: -39
Channel 48 Cost: -24
Channel 52 Cost: -39
Channel 56 Cost: 57
Channel 60 Cost: -39
Channel 64 Cost: -11
Channel 100 Cost: -39
Channel 104 Cost: -39
Channel 108 Cost: 389
Channel 112 Cost: 375
Channel 116 Cost: -35
Channel 120 Cost: -39
Channel 124 Cost: -39
Channel 128 Cost: -39
Channel 132 Cost: -39
Channel 136 Cost: -39
Channel 140 Cost: -39
Channel 144 Cost: -39
Channel 149 Cost: -31
Channel 153 Cost: -39
Channel 157 Cost: -39
Channel 161 Cost: -24
Channel 165 Cost: -39
wifi2 (15):
There is no ACSP information for radio (wifi2) in adsp sensor mode.
sh acs
Interface Channel select state Primary channel Channel width Power ctrl state Tx power(dbm) Use Last Selection
--------- --------------------- ---------------- ------------- --------------------- ------------- ---------------------
Wifi0 Disable(Link down) Down 20 Disable(Link down) Down Channel:No Power:No
Wifi1 Enable 44 20 Enable 11 Channel:No Power:No
There is no ACSP information for radio (wifi2) in adsp sensor mode.
sh acs neig
wifi0(14) ACSP neighbor list (0/384):
wifi1(16) ACSP neighbor list (35/384):
Bssid Mode Ssid/Hive Chan Rssi(dBm) Aerohive AP CU CRC STA Channel-width VID NVID
bc96:e508:adb6 Access DADsTMOBILE 36 -88 no -- -- -- 80 - -
be96:e578:adb6 Access 36 -88 no -- -- -- 80 - -
bc30:7ebc:603c Access ClickShare-187172027... 36 -89 no -- -- -- 20 - -
40e1:e46b:dca3 Access Mami_Home 40 -92 no -- -- -- 80 - -
0e93:7c62:5f22 Access 44 -91 no -- -- -- 80 - -
08b4:b10d:041c Access Front Office Nest Ro... 149 -84 no -- -- -- 80 - -
9058:512a:a319 Access 157 -91 no -- -- -- 80 - -
9058:512a:a316 Access DASizemore 157 -91 no -- -- -- 80 - -
9058:512a:a31c Access 157 -92 no -- -- -- 80 - -
4c23:1a16:3534 Access CDE-PRIVATE 161 -81 yes 5 0 0 20 - -
4c23:1a16:3535 Access 161 -82 yes 3 0 0 20 - -
4c23:1a16:3536 Access CDE-CORP 161 -81 yes 5 0 0 20 - -
40e1:e46b:dca4 Access Mami_Home 161 -90 no -- -- -- 80 - -
52e1:e46b:dca4 Access 161 -89 no -- -- -- 80 - -
0693:970a:1b03 Access Keyes 44 -91 no -- -- -- 80 - -
1093:970a:1b03 Access 44 -91 no -- -- -- 80 - -
1c93:7c62:5f22 Access Lan Solo 44 -91 no -- -- -- 80 - -
1693:7c62:5f22 Access 44 -92 no -- -- -- 80 - -
0a93:7c62:5f22 Access xfinitywifi 44 -92 no -- -- -- 80 - -
1293:7c62:5f22 Access Xfinity Mobile 44 -91 no -- -- -- 80 - -
a498:13cf:8248 Access Journey 157 -92 no -- -- -- 80 - -
3485:84b0:a825 Access CDE-PRIVATE 48 -82 yes 3 0 0 20 - -
3485:84b0:a827 Access CDE-CORP 48 -82 yes 3 0 0 20 - -
3485:84b0:a828 Access Control-Rm-1C 48 -82 yes 3 0 0 20 - -
3485:84b0:a826 Access 48 -82 yes 0 0 0 20 - -
9058:512a:a31b Access 157 -91 no -- -- -- 80 - -
0ab4:b10d:041d Access 149 -83 no -- -- -- 80 - -
0ab4:b10c:fdc1 Access 149 -91 no -- -- -- 80 - -
3485:84b0:a824 Access CDE-GUEST 48 -82 yes 3 0 0 20 - -
2880:a296:53f0 Access Verizon-M2100-53F0 44 -91 no -- -- -- 80 - -
9058:513a:e7bc Access Zarandzoro 157 -91 no -- -- -- 80 - -
9058:513a:e7c2 Access 157 -92 no -- -- -- 80 - -
9058:513a:e7bf Access 157 -92 no -- -- -- 80 - -
ba98:13cf:8248 Access 157 -91 no -- -- -- 80 - -
9058:513a:e7c1 Access 157 -92 no -- -- -- 80 - -
