On controller running 6.5.3.3 the ARM rf-summary shows no free channels. On another controller running 6.4.4.16 I can see 18 free 5Ghz channels and 2 free 2.4Ghz channels.
#show ap arm rf-summary ap-name AAP-W******02
Channel Summary
---------------
channel retry phy-err mac-err noise util(Qual) cov-idx(Total) intf_idx(Total)
------- ----- ------- ------- ----- ---------- -------------- ---------------
36 0 0 0 93 8/7/0/0/90 0/0(0) 6/0//0/0(6)
40 0 0 0 93 11/0/1/0/90 0/0(0) 1/2//0/0(3)
44 0 0 0 93 11/0/1/0/90 0/0(0) 0/0//0/0(0)
48 0 0 0 93 19/8/1/0/90 0/0(0) 1/0//0/0(1)
52 3 0 0 93 2/0/0/0/91 6/0(6) 0/0//0/0(0)
56 0 0 0 93 9/0/0/0/91 0/0(0) 0/0//0/0(0)
60 0 0 0 93 9/0/0/0/91 0/0(0) 0/0//0/0(0)
64 0 0 0 93 9/0/0/0/91 0/0(0) 0/0//0/0(0)
100 0 0 0 93 0/0/0/0/91 0/0(0) 0/0//0/0(0)
104 0 0 0 93 9/0/0/0/91 0/0(0) 0/0//0/0(0)
108 0 0 0 93 9/0/0/0/91 0/0(0) 0/0//0/0(0)
112 0 0 0 93 9/0/0/0/91 0/0(0) 0/0//0/0(0)
116 0 0 0 93 9/0/0/0/91 0/0(0) 12/8//0/0(20)
120 0 0 0 93 9/0/0/0/91 5/0(5) 25/0//0/0(25)
124 0 0 0 93 9/0/0/0/91 0/0(0) 0/8//0/0(8)
128 0 0 0 93 9/0/0/0/91 0/0(0) 0/0//0/0(0)
132 0 0 0 93 0/0/0/0/91 0/0(0) 0/0//0/0(0)
136 0 0 0 93 9/0/0/0/91 0/0(0) 0/0//0/0(0)
140 0 0 0 96 0/0/0/0/91 6/0(6) 0/0//0/0(0)
1 0 0 0 89 0/0/0/0/85 0/0(0) 4/2//5/1(12)
6 7 0 6 94 11/9/0/0/89 0/0(0) 13/4//4/1(22)
11 0 0 0 90 79/66/1/6/88 4/0(4) 27/0//4/1(32)
Columns:util(Qual): ch-util/rx/tx/ext-ch-util/quality
Noise followed by "*" indicates that the last scan on this channel was a split-scan, which was
triggered by high channel noise. Check show ap arm split-scan-history.
HT/VHT Channel Summary
----------------------
Bandwidth Channel range Total interference index
--------- ------------- ------------------------
40MHz 116-120 45
40MHz 52-56 0
40MHz 100-104 0
40MHz 124-128 8
40MHz 36-40 9
40MHz 60-64 0
40MHz 108-112 0
40MHz 132-136 0
40MHz 44-48 1
Interface Name :wifi0
Current ARM Assignment :52+/18.0
Covered channels a/g :18/0
Free channels a/g :0/0
ARM Edge State :enable
Last check channel/pwr :6m:52s/5m:2s
Last change channel/pwr :13m:13s/15m:1s
Next Check channel/pwr :40s/2m:16s
Assignment Mode :Single Band
Interface Name :wifi1
Current ARM Assignment :6/9.0
Covered channels a/g :0/3
Free channels a/g :0/0
ARM Edge State :enable
Last check channel/pwr :6m:44s/46s
Last change channel/pwr :4h:9m:2s/4h:9m:2s
Next Check channel/pwr :1m:5s/5m:44s
Assignment Mode :Single Band
Is this a known issue in this code revision or someother problem?