Wireless Access

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New Contributor
Posts: 4
Registered: ‎05-07-2014

QOS

Hi

 

How Aruba support Quality of Service (QOS) within Access Point to Controller?

Aruba
Posts: 1,377
Registered: ‎12-12-2011

Re: QOS

At a very high level, any traffic from the wireless client needing to be prioritized is sent with the appropriate DSCP values in the packet header to the controller.  In this case, in the GRE packet, the QoS tags would be present from AP to controller for the client session where QoS is triggered.

Seth R. Fiermonti
Consulting Systems Engineer - ACCX, ACDX, ACMX
Email: seth@hpe.com
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Aruba
Posts: 1,377
Registered: ‎12-12-2011

Re: QOS

From the 802.11n VRD - http://www.arubanetworks.com/vrd/80211nNetworksVRD/wwhelp/wwhimpl/js/html/wwhelp.htm

 

LAN Edge and Core


The LAN that is between the AP and the mobility controller must recognize and prioritize DCSP-marked traffic through the network. When in tunnel or decrypt-tunnel mode, the AP translates WMM marks into DSCP marks and places them in the GRE header so that the intervening network properly prioritizes traffic. Similarly, the core must respect the QoS marks from the mobility controller to the multimedia servers.


It is critical that all devices in the network be capable of and configured for QoS support. Switches and the multimedia servers themselves should mark traffic appropriately. Failure to ensure end-to-end prioritization can result in unpredictable performance for these applications.

Seth R. Fiermonti
Consulting Systems Engineer - ACCX, ACDX, ACMX
Email: seth@hpe.com
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New Contributor
Posts: 4
Registered: ‎05-07-2014

Re: QOS

hi Seth

 

how about cases where GRE tunnel been encapsulate to IPsec tunnel. Does the DSCP tag still able to be show on each packet?

is there any limitations on number of QOS? how many qos can be tagged?

 

 

Guru Elite
Posts: 21,556
Registered: ‎03-29-2007

Re: QOS

hbazizi@gmail.com, please see the document here:  http://www.arubanetworks.com/pdf/technology/whitepapers/WP_BringQoSWireless.pdf

 

 



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

New Contributor
Posts: 4
Registered: ‎05-07-2014

Re: QOS

Hi

 

The explaination is on connection AP to AC in LAN environment.

 

but how if the AP to AC via metro-ethernet layer where the packets flow to few hops before reach the controller? my curiosity is if hop is able to have the QOS? but does it able to recognize the QOS of encapsulated packets in GRE/IPsec tunnel between AP to AC?

 

appreciate your thoughts

 

tq

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