Dear Oliver, I am not mentioning IPv4 multicast addresses, which you are right are mapped to ethernet MAC starting with 01-00-5E. 01:40:96:ff:ff:c0 is well-known ETHERNET multicast address for iapp protocol.
Regarding inter-subnet WLCCP i suggest to read patent related to creation of WLCCP protocol: http://www.google.com/patents/US7706345, which clearly states that there is specification on how to pass inter-subnet WLCCP traffic Regards, Shahin Sent from my iPhone On Nov 12, 2012, at 8:53 PM, Oliver Jancevski <[email protected]> wrote: > > I dont think you can route the MAC address bellow. All standard IPv4 > multicast addresses translate to 1st 3 bytes of the MAC to be 01-00-5E. > > This is confirmed in the WDS FAQ: > Q. How do the WDS and the infrastructure APs in the WLAN communicate with > each other? > > A. The WDS and the infrastructure APs communicate over a multicast protocol > called the Wireless LAN Context Control Protocol (WLCCP). These multicast > messages cannot be routed. Therefore, a WDS and the associated infrastructure > APs must be in the same IP subnetwork and on the same LAN segment. Between > the WDS and the Wireless LAN Solution Engine (WLSE), WLCCP uses Transmission > Control Protocol (TCP) and User Datagram Protocol (UDP) on port 2887. When > the WDS and WLSE are on different subnetworks, packet translation with a > protocol like Network Address Translation (NAT) cannot occur. > > > > --- On Sun, 11/11/12, Shahin Mammadov <[email protected]> wrote: > > > From: Shahin Mammadov <[email protected]> > Subject: Re: [OSL | CCIE_Wireless] WDS > To: "------" <[email protected]> > Cc: "[email protected]" <[email protected]> > Received: Sunday, November 11, 2012, 4:22 PM > > 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. > >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> >> Are you a CCNP or CCIE and looking for a job? Check out >> www.PlatinumPlacement.com > > -----Inline Attachment Follows----- > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
