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only one PC cannot connect WIFI

Latest reply: Nov 27, 2018 05:27:50 1195 15 12 0 0

[Problem Description] :

only one PC cannot connect WIFI

 

[Problem Analysis]

Check RSSI and CU values, everything is normal ,By pinging different APs, We can confirm that the  link delay between the problem AP and the AC that the computer cannot connect is very large.(ping other AP and other group is fine )

 only one PC cannot connect WIFI-2786207-1only one PC cannot connect WIFI-2786207-2only one PC cannot connect WIFI-2786207-3


 

Then we checked the configuration and found you configuration load-balance under rrm-profile name default

When the link delay to large, we suggest dont configuration this, because if link delay too large, some packet need more time to PC, but this PC is more sensitive.

when the packet came late, the PC think packet was lost. The PC will send the request message again without waiting for a reply. So cannot connect .

 

[Root Cause]

Link delay too large

only one PC cannot connect WIFI-2786207-4

[Solution Description]

rrm-profile name default 

smart-roam enbale

sta-load-balance dynamic enable 

sta-load-balance dynamic start-threshold 20


Undo sta-load-balance dynamic enable 

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delay will cause this issue , good to know

This post was last edited by GongXiaochuan at 2018-10-30 06:03.
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only one PC cannot connect to PC, most of us will think it is PC issue but not WIFI issue.
but from this case we can know it is WIFI issue, we learned a lot.
thank you very much for sharing us this good example.
This post was last edited by Torrent at 2018-10-31 06:47.
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A ConnectRetry interval can be configured globally, or on a particular peer or peer group. A ConnectRetry interval configured on a specific peer or peer group takes precedence over a global ConnectRetry interval.
If both the peer { group-name | ipv4-address } timer connect-retry connect-retry-time command and the timer connect-retry connect-retry-time command are run on a device, the configuration of the peer { group-name | ipv4-address } timer connect-retry connect-retry-time command takes effect, but the configuration of the timer connect-retry connect-retry-time command does not. This post was last edited by SupperRobin at 2018-10-31 06:32.
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good guy , thanks for your sharing , about this situation , i have the same case with you , after refer to your suggest , it solved .

rrm-profile name default
smart-roam enbale
sta-load-balance dynamic enable
sta-load-balance dynamic start-threshold 20
Undo sta-load-balance dynamic enable
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This is a great article, I am interested in this article, which is very helpful for our daily troubleshooting. I always have similar problems in my daily work, but I don't know how to deal with them. Now I have a definite idea. Thank you very much for sharing. Hopefully you can update to continue like this
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yes  , look the description about the issue , i think there must be problem on this PC

When the link delay to large, we suggest dont configuration this, because if link delay too large, some packet need more time to PC, but this PC is more sensitive.

when the packet came late, the PC think packet was lost. The PC will send the request message again without waiting for a reply. So cannot connect .

This post was last edited by Finn92 at 2018-10-31 09:08.
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Thanks for your sharing ,which is a wonderful guidance, i really interested in this article, which is useful for us and improvement product technology and become to a professional engineer .
I hope that you can insist post new kownlege and skills, i will alawys keep an eye on your sharing.
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  • The profiles marked with * can be configured as default profiles.

  • AP provisioning profiles cannot be referenced by other profiles and are only used to deliver configurations to specified APs or AP groups. Therefore, this figure does not show AP provisioning profiles.

  • An AP radio can directly reference some profiles, including the radio profile, VAP profile, WDS profile, WDS whitelist profile, Mesh profile, and Mesh whitelist profile.

  • The IoT profile and serial profile are directly referenced in the IoT card interface view and are not displayed.
This post was last edited by No.9527 at 2018-10-31 03:24.
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The WiFi antenna is connected to the WiFi connector for WLAN wireless access. The WiFi antennas are delivered with the models with the built-in WiFi function. Hope you can update continue like this , thank you very much . This post was last edited by yangyong at 2018-10-31 06:59.
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