Thanks for the reply, Andre… Question though – can you disable multicast altogether on a controller? I know you can change the mode from multicast -> multicast to multicast -> unicast, but in either mode the stream would still make it to the client. Is there a way to completely shut off multicast?
From: Andre Aubet <[email protected]<mailto:[email protected]>> Date: Monday, January 13, 2014 4:07 PM To: Jay Killion <[email protected]<mailto:[email protected]>> Cc: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [OSL | CCIE_Wireless] Mulitcast question The question is not clear, but it starts with configuring multicast on WLC2 and WLC4. And then "No other wireless clients connected to a WLC should be able to receive multicast streams. Do not use any switch configuration for this." I would simply disable multicast on the other WLCs. So no client connected on the other would receive multicast streams, even if they send IGMP join for the group. But I agree, this is not really clear... 2014/1/13 Jay Killion (jakillio) <[email protected]<mailto:[email protected]>> I could use Video Stream to convert a specific stream to unicast at the AP level, and I could use it to give priority over other streams or limit it based on utilization… But I don't know of any way to use it for blocking multicast altogether on a WLC. From: Andre Aubet <[email protected]<mailto:[email protected]>> Date: Monday, January 13, 2014 3:42 PM To: Jay Killion <[email protected]<mailto:[email protected]>> Cc: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [OSL | CCIE_Wireless] Mulitcast question Not sure because I don't know the lab setup here, but I think you should use the Media Stream feature no? 2014/1/13 Jay Killion (jakillio) <[email protected]<mailto:[email protected]>> Hi all - I'm working on WB1, lab 5.8 – which involves some multicast configuration on various WLC's. It's all pretty basic until I got this bullet - "No other wireless clients connected to a WLC should be able to receive multicast streams. Do not use any switch configuration for this." It's the last sentence that has me stumped. I know I can limit multicast with IGMP filters, multicast boundary lists, or even just basic ACL's – but only on the hop before the controller. Unless I've completely misunderstood, once a wireless stream hits the controller it's going to be sent to every AP (and each AP to any requesting client). If multicast reaches the controller, even an ACL applied to the WLAN or interface won't stop it. Have I misunderstood? Unfortunately, the solution guide doesn't explain or show an answer that I see so I'm curious how you could solve the requirement. Thanks - Jay Killion, CCIE #17873 R/S _______________________________________________ Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: iPexpert on YouTube: www.youtube.com/ipexpertinc<http://www.youtube.com/ipexpertinc>
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