Hi,
WDS communicates over the network using the Wireless LAN Context Control 
Protocol (WLCCP). This protocol uses the multicast destination address 
01:40:96:ff:ff:c0 for advertisement and discovery of the WDS master. Once the 
master is discovered by WDS clients, then unicast UDP sessions are created over 
port 2887 to authenticate the WDS client and exchange information. 
Alternatively, the WDS master IP address may be configured statically in the 
WDS client if the master is not on the same subnet or if multicast routing is 
not enabled.

Regards,
Shain Mammadov


Sent from my iPhone

On Nov 12, 2012, at 12:35 AM, ------ <[email protected]> wrote:

> Hi List 
> 
> Could someone points me to a paper explaining how an AP would dynamically 
> find the WDS master on the network ? 
> 
> So far, I read the configuration guide of the current IOS versions, for the 
> 1240AG for instance. 
> 
> This URL : 
> http://www.cisco.com/en/US/docs/wireless/access_point/12.4_10b_JA/configuration/guide/scg12410b-chap12-wdsroam-rm.html
> 
> From this CG, I can read this in the section : Configuring Access Points to 
> use the WDS Device
> 
> The access points that you configure to interact with the WDS automatically 
> perform these steps:
> •<blank.gif>Discover and track the current WDS device and relay WDS 
> advertisements to the wireless LAN.
> •<blank.gif>Authenticate with the WDS device and establish a secure 
> communication channel to the WDS device.
> •<blank.gif>Register associated client devices with the WDS device.
> 
> I also explored a couple of books : CCNA Wireless, CCNA Wireless from Todd 
> Lamle without any luck. 
> 
> Thanks 
> 
> J. 
> 
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