help! help!

[conger_eel]

IN the document of 802.11F/D6 ,what relationship between the
iapp protocol and raduis protocol? and how can an ap get information about other aps from raduis server?

[BER_vs_SNR]

If I remember well, you asked in another thread in this forum a couple of days ago for the 802.11f draft and I steered you to it. Now it seems amazing to me that you did not even bother to read it.

The answer to your question is crystal-clear in the draft. But you have got to do your homework and read it. No one else is going to do it for you!

If you don't understand the RADIUS protocol handshake details for secure access then try the IETF RFCs about it.

[conger_eel]

i have read the document of 802.11f/d6, but this document is english . and english is not my mother language .so it have some
difficult for me to understand it . so i ask this question! please for
reply this question!

[Heimdall]

A quick check will show the following:

IAPP defines messages and data to be exchanged between Access Points and between the IAPP and higher layer management entities to support roaming. The IAPP protocol uses TCP for inter-Access Point communication and UDP for RADIUS request/response exchanges. It also uses Layer 2 frames to update the forwarding tables of Layer 2 devices.

Enjoy

[conger_eel]

thank you for replying ,but i have knew that . i want to know
what the relationship between the iapp protocol and raduis protocol in 802.11 f ? what is the channel of the comunication between the ap ?is it through the raduis serever? how can an ap get information (e.g, the ip address ) of the anther ap throug
the raduis sever? see the charpter of the iapp-move request in document of 802.11f/d6?

[Heimdall]

Ok...at this point I guess I don't really understand exactly what information you are looking for. I have read the standard...and this area boils down to:

Say you have a roaming station moving into the coverage area of a new AP. This should automatically
initiate handover to the AP and trigger the AP to use IAPP to retrieve the appropriate station information from the RADIUS server to inform the old AP of the new association
and perform a context transfer with the old AP. This context transfer ensures quick and seamless...uh...we hope...hand-over to the new AP.
But you know this already...so, what are the "relationships"? Another quick search shows that the APME (Access Point Management Entity) "layer" provides IAPP with station-association events relating to stations entering the AP's coverage area. IAPP also uses the services of this "layer" to send relevant management requests to associated stations. IAPP uses the services of the RADIUS client to obtain relevant station information pre-configured (interesting) into the RADIUS server; it uses the TCP/IP layer to communicate changes in station association with other Access Points, which includes the old AP.
Additionally the 802.2 link layer is used to send layer 2 frames to update intermediate bridges to facilitate frame delivery to the newly associated station.

I could go on by simply repeating the standard word-for-word but....

This is as far as I go...my "need to know" stops here. If you require more in-depth information I think you should do as BER_vs_SNR has suggested and go look it up.

I am curious though...are you an engineer? student? or are you just a hungering, thirsting barracuda-like hound dog seeker of mysterious IEEE knowledge like the rest of us?
:D

enjoy

[conger_eel]

:) thank all of you for replying this thread! i have knew this !

[BER_vs_SNR]

If conger_eel could not understand the standard and its language, I am really wondering whether and how possibly he could understand your "juicy" and truly substantive explanation.

In any event, thumbs up, Heimdall!