Re: [ipwave] draft-ietf-ipwave-ipv6-over-80211ocb-00 figure comparing .11 to .11-OCB

[Jérôme Härri <[e-mail]>]

Hello Alex, All

 

I agree with Hans-Joachim, no beacon in OCB mode..and in general, we do not
need to show ‘beacons’ in the chart, as even the association process does
not ‘need’ a beacon…it just depends on if you do ‘active’ or ‘passive’
scanning. 

 

So, if you want to avoid any misunderstanding, you can also simply remove
beacons from the drawing and mention ‘active scanning’…if you want to keep
it, then if you use a beacon, then you do not need the probes (and mention
‘passive’ scanning)..directly association (to the best of my knowledge..)

 

As for the data chart, it is also unclear..I would also tend to say that it
could be easier to have bi-directional arrows for ‘data’ in both cases.

 

Another point: this document is about IPv6..I would therefore suggest maybe
to add the IPv6 processes (so that we have IPv6 data). So, you could add the
SLAAC charts and maybe even Router Solicitation/advertisement charts. What
do you think? These would be common between WLAN and OCB…we could then just
visually show that we bypass some ‘lower layer’ phases, but IP remains
similar. This could also help us with the statement that IPv6 needs to
guarantee the security process that OCB is not doing…with such chart, that
could help.

 

Best Regards,

 

Jérôme

 

From: its [mailto:[e-mail]] On Behalf Of Dr. Hans-Joachim
Fischer
Sent: Wednesday 01 February 2017 11:58
To: [e-mail]
Subject: Re: [ipwave] draft-ietf-ipwave-ipv6-over-80211ocb-00 figure
comparing .11 to .11-OCB

 

 

*	Beacons are not known in OCB mode
*	Data goes bi-directional

Hans-Joachim Fischer

 

Am 01.02.2017 um 11:44 schrieb Alexandre Petrescu:

draft-ietf-ipwave-ipv6-over-80211ocb-00  figure comparing .11 to .11-OCB 

Hello IPWAVErs, 

I suggested to illustrate the differences between .11 and .11-OCB by means
of a figure, and a co-author produced it.  Unless there is opposition I will
include it in the draft. 

   STA                    AP                 STA                    AP 
     |                      |                  |                      | 
     |<------ Beacon -------|                  |<------ Beacon -------| 
     |                      |                  |                      | 
     |---- Probe Req. ----->|                  |------- Data -------->| 
     |<--- Probe Res. ------|                  |------- Data -------->| 
     |                      |                  |------- Data -------->| 
     |---- Auth Req. ------>|                  |------- Data -------->| 
     |<--- Auth Res. -------|                  |------- Data -------->| 
     |                      |                  |------- Data -------->| 
     |---- Asso Req. ------>|                  |------- Data -------->| 
     |<--- Asso Res. -------|                  |------- Data -------->| 
     |                      |                  |------- Data -------->| 
     |------- Data -------->|                  |------- Data -------->| 
     |------- Data -------->|                  |------- Data -------->| 

     (a) Traditional IEEE 802.11               (b) IEEE 802.11 OCB mode 


Yours, 

Alex 

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