https://community.extremenetworks.com/t5/extremewireless-wing/i-yesterday-upgrade-my-vx9000-controller-to-version-5-9-1-1-and/m-p/16465#M353 Check the radio channels...I've seen instances where smart-rf doesn't work as expected after an upgrade and you end-up with all or most radios on the same channel at high power, causing massive co-channel interference.<BR /> <BR /> Here's a perfect example:<BR /> Notice that both APs 2.4GHz radios (while fairly close together) are on channel 1 at power level 21, even though the MAX power is specified as 10 in the smart-rf policy, and similarly for the 5GHz radios.<BR /> <BR /> VX9000-PROD-1#sh running-config smart-rf-policy smart1<BR /> smart-rf-policy smart1<BR /> assignable-power 5GHz max 13<BR /> assignable-power 5GHz min 6<BR /> assignable-power 2.4GHz max 10<BR /> assignable-power 2.4GHz min 6<BR /> VX9000-PROD-1#sh wi radio on ap<BR /> ----------------------------------------------------------------------------------------------<BR /> RADIO RADIO-MAC RF-MODE STATE CHANNEL POWER #CLIENT <BR /> ----------------------------------------------------------------------------------------------<BR /> ap8533-Kitchen:R1 XX-XX-XX-XX-E8-60 2.4GHz-wlan On 1 ( smt) 21 (smt) 2 <BR /> ap8533-Kitchen:R2 XX-XX-XX-XX-43-60 5GHz-wlan On 40 ( smt) 16 (smt) 3 <BR /> ap8533-Kitchen:R3 XX-XX-XX-XX-A8-90 sensor Off N/A ( smt) 30 (smt) 0 <BR /> ap8533-In..ration:R1 XX-XX-XX-XX-DB-E0 2.4GHz-wlan On 1 ( smt) 21 (smt) 3 <BR /> ap8533-In..ration:R2 XX-XX-XX-XX-39-C0 5GHz-wlan On 36 ( smt) 16 (smt) 0 <BR /> ap8533-In..ration:R3 XX-XX-XX-XX-24-50 sensor Off N/A ( smt) 20 (smt) 0 <BR /> ----------------------------------------------------------------------------------------------I have found that you need to first make sure that you don't have the 'no neighbor-recovery' setting in the smart-rf configuration as it will cause this problem.<BR /> After that, clearing the smart-rf configuration will generally correct this. It takes 30+ minutes for it to take effect though. The CLI command is:<BR /> #service smart-rf clear-config<BR /> Wed, 08 Nov 2017 21:56:00 GMT Andrew_Webster 2017-11-08T21:56:00Z https://community.extremenetworks.com/t5/extremewireless-wing/i-yesterday-upgrade-my-vx9000-controller-to-version-5-9-1-1-and/m-p/16464#M352 I yesterday upgrade my vx9000 controller to version 5.9.1.1 and after that the wifi network is going very slow the working version before the upgrade was 5.8.4 Wed, 08 Nov 2017 20:08:00 GMT https://community.extremenetworks.com/t5/extremewireless-wing/i-yesterday-upgrade-my-vx9000-controller-to-version-5-9-1-1-and/m-p/16464#M352 Gezos_Mega 2017-11-08T20:08:00Z https://community.extremenetworks.com/t5/extremewireless-wing/i-yesterday-upgrade-my-vx9000-controller-to-version-5-9-1-1-and/m-p/16465#M353 Check the radio channels...I've seen instances where smart-rf doesn't work as expected after an upgrade and you end-up with all or most radios on the same channel at high power, causing massive co-channel interference.<BR /> <BR /> Here's a perfect example:<BR /> Notice that both APs 2.4GHz radios (while fairly close together) are on channel 1 at power level 21, even though the MAX power is specified as 10 in the smart-rf policy, and similarly for the 5GHz radios.<BR /> <BR /> VX9000-PROD-1#sh running-config smart-rf-policy smart1<BR /> smart-rf-policy smart1<BR /> assignable-power 5GHz max 13<BR /> assignable-power 5GHz min 6<BR /> assignable-power 2.4GHz max 10<BR /> assignable-power 2.4GHz min 6<BR /> VX9000-PROD-1#sh wi radio on ap<BR /> ----------------------------------------------------------------------------------------------<BR /> RADIO RADIO-MAC RF-MODE STATE CHANNEL POWER #CLIENT <BR /> ----------------------------------------------------------------------------------------------<BR /> ap8533-Kitchen:R1 XX-XX-XX-XX-E8-60 2.4GHz-wlan On 1 ( smt) 21 (smt) 2 <BR /> ap8533-Kitchen:R2 XX-XX-XX-XX-43-60 5GHz-wlan On 40 ( smt) 16 (smt) 3 <BR /> ap8533-Kitchen:R3 XX-XX-XX-XX-A8-90 sensor Off N/A ( smt) 30 (smt) 0 <BR /> ap8533-In..ration:R1 XX-XX-XX-XX-DB-E0 2.4GHz-wlan On 1 ( smt) 21 (smt) 3 <BR /> ap8533-In..ration:R2 XX-XX-XX-XX-39-C0 5GHz-wlan On 36 ( smt) 16 (smt) 0 <BR /> ap8533-In..ration:R3 XX-XX-XX-XX-24-50 sensor Off N/A ( smt) 20 (smt) 0 <BR /> ----------------------------------------------------------------------------------------------I have found that you need to first make sure that you don't have the 'no neighbor-recovery' setting in the smart-rf configuration as it will cause this problem.<BR /> After that, clearing the smart-rf configuration will generally correct this. It takes 30+ minutes for it to take effect though. The CLI command is:<BR /> #service smart-rf clear-config<BR /> Wed, 08 Nov 2017 21:56:00 GMT https://community.extremenetworks.com/t5/extremewireless-wing/i-yesterday-upgrade-my-vx9000-controller-to-version-5-9-1-1-and/m-p/16465#M353 Andrew_Webster 2017-11-08T21:56:00Z