Slow connecting to Radius server

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  • Updated 2 years ago
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We have aerohive AP's which connects to a radius server the server has NPS to authenticate againt a computer group. We have two laptop models Dell latitude and toshiba satellite pro running windows 8.1.

Now the dell laptop when booting up it connects almost instantly when greeted with the logon screen but the toshiba one takes exactly 1 minute 10 seconds to connect and its that time every reboot.
Any ideas? Very strange

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Matt Poole

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Posted 2 years ago

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Nick Lowe, Official Rep

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Lots of moving parts here, Matt. Giving a short answer as I'm typing this on my phone.

Firstly, what does Client Monitor show for the client? If there's nothing obvious...

Do you have a concurrent packet capture of the EAPOL exchange (client and AP), the RADIUS exchange (AP and NPS) and the subsequent DHCP exchange that you could share?

(An easy way to get the EAPOL exchange is by another device in proximity of the AP and client watching the air in monitor mode.)

If you can get these, I'll happily tell you what's going on.

If you want to share captures outside of here, my Skype username is nick.lowe
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Matt Poole

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Thanks for the quick reply Nick, I will see what i can do with futher details. The thing that is also odd once the toshiba laptop is on the window 8 logon screen as mentioned above the wifi bars are not connected until 70seconds but as soon as I click on the wifi bars (ssid's names appear on the right) it connects to the radius instantly.

Also just to mention the laptop thats playing up has the exactly the same configuration settings applied as the dell laptop i.e. Same OU, same groups, connecting to same AP, its like for like.

Now i thought maybe its the wifi driver but when i connect to an WPA2 authenticated AP it connects straight away as it should.

Many Thanks