topic Re: Does AP310 supports 802.11r (fast transition)? in Network Architecture & Design

Does AP310 supports 802.11r (fast transition)?

_Alex_ — Fri, 09 Jul 2021 20:44:59 GMT

I am sure to see this option on the wlan profile settings, but i can't find anything official in the specs?

Re: Does AP310 supports 802.11r (fast transition)?

StephanH — Fri, 09 Jul 2021 21:34:02 GMT

Hello Alex,

yes it does. The feature is called "Fast Transition" also.

Re: Does AP310 supports 802.11r (fast transition)?

Stefan_K_ — Sat, 10 Jul 2021 04:47:47 GMT

I don’t want to say that your answer is false, because I also think that it supports this feature (even IdentFi Controller + APs supported this feature), buuut… Where on earth is this listed in the datasheet? 😄

In the XCC datasheet features like 802.11k, 802.11w, band steering and many more are listed, but not 802.11r/Fast transition. (In the IdentiFi datasheet it was indeed listed)

In the AP datasheet such features are not listed at all.

Now I wonder why it isn’t listed anywhere? This seems to confuse other people as well. Maybe @Sam Pirok can help. 😄

Re: Does AP310 supports 802.11r (fast transition)?

StephanH — Sat, 10 Jul 2021 05:10:58 GMT

In the XCC datasheet features like 802.11k, 802.11w, band steering and many more are listed, but not 802.11r/Fast transition. (In the IdentiFi datasheet it was indeed listed)

In the AP datasheet such features are not listed at all.

Now I wonder why it isn’t listed anywhere? This seems to confuse other people as well. Maybe @Sam Pirok can help. 😄

Hello Stefan,

I am pretty sure. I saw the Fast Transition flag in the beacon frame from the AP310 and in difference to an datasheet a beacon tell the truth. Please be aware Fast Transition is only available with 802.1X, with PSK it does not make sense.

Tested only with XCC!

Re: Does AP310 supports 802.11r (fast transition)?

_Alex_ — Wed, 14 Jul 2021 19:09:13 GMT

Hello and thanks @all,
I ask a little obliviously, why does it only make sense in conjunction with 802.1x?

Re: Does AP310 supports 802.11r (fast transition)?

StephanH — Thu, 15 Jul 2021 02:30:30 GMT

Hello Alex,

Roughly:
When using a PSK, the key material is exchanged as part of the 4-way handshake. In an 802.1X procedure, however, the EAP authentication must be run through before the 4-way handshake, which is also necessary. This is exactly where 802.1r comes in. The Fast Transition shortens the EAP part and exchanges data before roaming, but not the 4-way handshake. This must always be passed through. The 4-way handshake cannot be accelerated further by shortening if you use PSK

Re: Does AP310 supports 802.11r (fast transition)?

_Alex_ — Thu, 15 Jul 2021 13:52:40 GMT

Great, thanks your explanation!