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Smart RF 2

  • 1.  Smart RF 2

    Posted 06-08-2018 14:01
    Hello Community,

    1. I want to know the criteria and the time is taking to Smart RF 2 (WING 5.9.2) to shutdown the radio when it's needed.

    2. Smart RF in generally doing calculation based on the sniffing the neibours, but not based on the wireless client's info was shared by the wireless clients.
    Can we add the data to SMART RF calculation algorithm with enabling "radio-resource-measurement" in WLAN config ? Or it's performing some other function?



  • 2.  RE: Smart RF 2

    Posted 06-08-2018 14:43
    Hello Aviv,

    Question 1 answer:
    Select Shutdown feature run interval is set in "frequency" parameter under "select shutdown" in Smart RF policy.

    There are two thresholds : "cci-high-threshold" and "cci-low-threshold" where CCI stands for Co-Channel Interference.

    Every time Select Shutdown is run, the CCI interference is calculated. If it is found to be higher than the high threshold, one or more 2.4GHz radio will be mapped to SSD_Hidden. SSD_Hidden is a special wlan that users will not be able to associate to. The radio runs in the background to continue monitoring the environment. For this reason, the radio state will not show as "Off", but rather, "Hidden".

    The next time Select Shutdown is run, if the RF environment situation change and the average CCI falls below the lower threshold, the algorithm considers "Awaken"ing previously hidden radios. It does so by selecting the ones that will cause the least CCI to its neighbors. It continues to do so until CCI is estimated to cross the lower threshold but not the higher threshold.


    and here: page 1643:


    Question 2 answer:
    Smart RF is not currently utilizing radio resource measurement reports from clients.

  • 3.  RE: Smart RF 2

    Posted 06-09-2018 05:55
    Hello Abdulla,

    Thank you for your reply!

    What is the goal of using radio resource measurement ?



  • 4.  RE: Smart RF 2

    Posted 06-10-2018 05:55
    Hello All,

    Shutting down radios don't work for me also after 20 minutes/

    2 pieces of AP7532 WING 5.9.2

    There is the outputs + smart rf run config:

    VC#show smart-rf select-shutdown
    VC:R1 B8-50-01-XX-XX-XX On
    ap7532-XXXXXX:R1 B8-50-01-XX-XX-XX On
    VC#show running-config smart-rf-policy 777 include-factory
    smart-rf-policy 777
    no group-by area
    no group-by floor
    sensitivity custom
    assignable-power 5GHz max 17
    assignable-power 5GHz min 4
    assignable-power 2.4GHz max 4
    assignable-power 2.4GHz min 4
    channel-list 5GHz 21,25,36,40,44,48,52,56,60,64,100,104,108,112,116,120,124,128,132,136,140,149,153,157,161,165,173,184,188,192,196,208,212,216
    channel-list 2.4GHz 1
    channel-width 5GHz 40MHz
    channel-width 2.4GHz 20MHz
    avoidance-time dfs 90
    avoidance-time adaptivity 90
    smart-ocs-monitoring off-channel-duration 5GHz 50
    smart-ocs-monitoring off-channel-duration 2.4GHz 50
    smart-ocs-monitoring frequency 5GHz 6
    smart-ocs-monitoring frequency 2.4GHz 6
    smart-ocs-monitoring sample-count 5GHz 5
    smart-ocs-monitoring sample-count 2.4GHz 10
    smart-ocs-monitoring extended-scan-frequency 5GHz 5
    smart-ocs-monitoring extended-scan-frequency 2.4GHz 5
    smart-ocs-monitoring power-save-aware 5GHz dynamic
    smart-ocs-monitoring power-save-aware 2.4GHz dynamic
    smart-ocs-monitoring voice-aware 5GHz dynamic
    smart-ocs-monitoring voice-aware 2.4GHz dynamic
    no smart-ocs-monitoring client-aware 5GHz
    no smart-ocs-monitoring client-aware 2.4GHz
    no smart-ocs-monitoring tx-load-aware 5GHz
    no smart-ocs-monitoring tx-load-aware 2.4GHz
    no smart-ocs-monitoring awareness-override threshold
    interference-recovery noise
    interference-recovery noise-factor 1.5
    interference-recovery neighbor-offset 5
    interference-recovery interference
    interference-recovery client-threshold 50
    interference-recovery channel-switch-delta 5GHz 20
    interference-recovery channel-switch-delta 2.4GHz 20
    neighbor-recovery power-threshold 5GHz -70
    neighbor-recovery power-threshold 2.4GHz -70
    select-shutdown cci-high-threshold -80
    select-shutdown cci-low-threshold -100
    select-shutdown frequency-limiter 1
    select-shutdown frequency 6
    coverage-hole-recovery interval 5GHz 30
    coverage-hole-recovery interval 2.4GHz 30
    coverage-hole-recovery coverage-interval 5GHz 10
    coverage-hole-recovery coverage-interval 2.4GHz 10
    coverage-hole-recovery snr-threshold 5GHz 20
    coverage-hole-recovery snr-threshold 2.4GHz 20
    coverage-hole-recovery client-threshold 5GHz 1
    coverage-hole-recovery client-threshold 2.4GHz 1
    interference-recovery channel-hold-time 1800
    neighbor-recovery power-hold-time 0
    no neighbor-recovery dynamic-sampling
    neighbor-recovery dynamic-sampling threshold 5
    neighbor-recovery dynamic-sampling retries 3
    VC#show smart-rf interfering-neighbors
    ap7532-XXXXXX:R2 B8-50-01-XX-XX-XX --None--

    ap7532-XXXXXX:R1 B8-50-01-XX-XX-XX 1 VC:R1 B8-50-01-XX-XX-XX 4 30 1

    VC:R2 B8-50-01-XX-XX-XX --None--

    VC:R1 B8-50-01-XX-XX-XX 1 ap7532-XXXXXX:R1 B8-50-01-XX-XX-XX 4 33 1


    I need help



  • 5.  RE: Smart RF 2

    Posted 06-11-2018 13:05
    Hello Aviv,

    Select Shutdown feature is aimed at large deployment to reduce CCI on 2.4GHz. For a smaller deployment, less than 4, Select Shutdown will not consider any of the radios for hiding. The reason for this is, Interference Recovery will handle assigning channels 1, 6 and 11 among the three or less 2.4GHz radios.

    In your case, Select Shutdown finds there are only 2 radios in the deployment, so it does not consider any radio for hiding.


  • 6.  RE: Smart RF 2

    Posted 06-12-2018 13:50
    Hello Abdulla Hammad,

    OK, but I configured only one channel "1" for using by smart-rf policy !
    You mean this criteria that Interference Recovery will handle assigning channels 1, 6 and 11 among the three I can't change/reconfig in smart-rf policy ???

    In addition, you can see there is a very huge CCI (attenuation between them) about -30 !!!!!

    By me, it's very strange.
    I missing something here.



  • 7.  RE: Smart RF 2

    Posted 06-12-2018 14:08
    It is assumed that you wouldn't give all radios the same channel in actual deployment. If you are doing this to test the feature, please have more than 3 radios in the setup. You can set them to channel 1 and you will see Select Shutdown hiding them as needed.


  • 8.  RE: Smart RF 2

    Posted 06-13-2018 03:49
    Hello Abdulla Hammad,

    I'll test it and update you.



  • 9.  RE: Smart RF 2

    Posted 06-14-2018 09:16

    Just tested it and select-shutdown is working.

    What is the goal of using radio resource measurement ?



  • 10.  RE: Smart RF 2

    Posted 06-14-2018 09:16
    Chrome knows everything.... https://en.m.wikipedia.org/wiki/IEEE_802.11k-2008

  • 11.  RE: Smart RF 2

    Posted 06-14-2018 09:16
    Great! Let me know if you have any questions regarding Select Shutdown in the future.

  • 12.  RE: Smart RF 2

    Posted 06-14-2018 09:16
    @Abdulla Hammad - fantastic answers, many thanks for the knowledge! :-))