Smart RF 2

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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?

Thanks,

Aviv 
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Aviv Kedem

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Posted 2 weeks ago

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Abdulla Hammad, Employee

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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.

References:

https://documentation.extremenetworks.com/WiNG/5.9.2/WCSRG/WiNG/GUI_Reference/topics/t_configuring_smart_rf_policy_select_shutdown.shtml

and here: page 1643:

https://documentation.extremenetworks.com/WiNG/5.9.2/CRG/9035491_WiNG_5_9_2_WC_CRG.pdf

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

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Hello Abdulla,

Thank you for your reply!

What is the goal of using radio resource measurement ?

Thanks,

Aviv
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Aviv Kedem

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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
--------------------------------------------------------------------------------
             RADIO                       RADIO-MAC                  STATE      
--------------------------------------------------------------------------------
  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
 enable
 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
 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
 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
 select-shutdown
 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
 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
----------------------------------------------------------------------------------------------------
       RADIO             RADIO-MAC      CHNL     NEIGHBORS              MAC         POWER ATTN CHNL
----------------------------------------------------------------------------------------------------
  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

Thanks,

Aviv

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Abdulla Hammad, Employee

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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.

Abdulla
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Aviv Kedem

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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.

Regards,

Aviv
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Abdulla Hammad, Employee

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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.

Abdulla
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Aviv Kedem

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Hello Abdulla Hammad,

I'll test it and update you.

Thanks,

Aviv
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Aviv Kedem

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Hello,

Just tested it and select-shutdown is working.

What is the goal of using radio resource measurement ?

Thanks,

Aviv
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Ronald Dvorak, Embassador

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Chrome knows everything....

https://en.m.wikipedia.org/wiki/IEEE_...
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Abdulla Hammad, Employee

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Great! Let me know if you have any questions regarding Select Shutdown in the future.
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Darrel Rhodes, Employee

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@Abdulla Hammad - fantastic answers, many thanks for the knowledge! :-))