Hi Andreas, You are right L2 multicast is used only for WDS master discovery within single l2 domain. (Highest priority wins) What I am trying to explain that there is an option to statically specify WDS master IP on WDS clients and eliminate discovery process. Which is the case where master and clients are in different subnets. http://www.cisco.com/en/US/docs/wireless/access_point/12.2_15_JA/configuration/guide/s15roamg.html#wp1036619 Snap from url above:
Step 4 (Optional) Select Specified Discovery and enter the IP address of the WDS device in the entry field. This feature--IP-based WDS--allows the access point to use a Cisco network infrastructure device running WDS from anywhere in the network. When you enable Specified Discovery, the access point immediately authenticates with the WDS device instead of waiting for WDS advertisements. If the WDS device that you specify does not respond, the access point waits for WDS advertisements. Or CLI: AP(config)# wlccp ap wds ip address 10.91.104.92 Regards, Shahin Sent from my iPhone On Nov 13, 2012, at 3:07 PM, Andreas di Zazzo <[email protected]> wrote: > WDS uses layer 2 multicast (not layer 3) which makes it unroutable. > > > > > Sent from Samsung mobile > > Shahin Mammadov <[email protected]> wrote: > 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 un
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