Thanks Jason, you have actually answerred my second question but not the
first one J

Let's try to sort the things out:

1.       If we have non WMM client than its traffic is putted to the
Best Effort queue at AP. The question is: will the AP retain the current
QoS marking ? i.e. is it gonna be UP 2 and the outer  DSCP value of LWAP
packet is gonna be AF2x? Or AP will replace the outer DSCP value with
SSID QoS level value?

2.       If we have WMM client which supports TSPEC than its traffic is
putted to the required queue at AP side but this queue level is LOWER or
EQUAL than configured for this SSID. Is it correct?

3.       If we have WMM client which does not support TSPEC than which
queue its traffic is gonna be placed to? Best Effort I expect?

4.       Ii we asked "not to be able to use greater thank AC_Video" why
should we use Platinum QoS level instead of Gold?

 

From: Jason Boyers [mailto:[email protected]] 
Sent: Thursday, April 28, 2011 9:33 PM
To: Victor Platov (viplatov)
Cc: [email protected]
Subject: Re: [OSL | CCIE_Wireless] [Q]: LAB 5.6 Guest 2 SSID QoS level

 

I understand that that can be a very confusing question.  I had a
certain reason for the way I put things, but it could be a bit clearer.
Technically, non-WMM clients can't use any AC categories - they're not
WMM!  The other problem is that the documentation would lead you to
think that all non-WMM traffic gets marked to the highest value allowed
by the WLAN.  That is only true if WMM is Disabled for a WLAN, not if
WMM is Allowed.

 

I may rewrite that question to be something like this:

 

"Configure SSID Guest2 to allow both WMM and non-WMM devices to connect.
If a WMM device connects, it should not be able to use greater than AC
Video without sending an ADDTS request."




Jason Boyers - CCIE #26024 (Wireless)

Technical Instructor - IPexpert, Inc.
Mailto: [email protected]

 

 

On Thu, Apr 28, 2011 at 8:35 AM, Victor Platov (viplatov)
<[email protected]> wrote:

Hi Guys,

 

Task number 5.6 (question 2) asks for "...it should not be able to use
greater than AC_Video". Why do we configure Guest2 with Platinum (Voice)
QoS level in the solution guide?

As per my understanding the SSID QoS level is used to determine the
maximum QoS level allowed for clients of this SSID, hence we should use
Gold level in our case, shouldn't we?

 

Thank you in advance!

 


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