Wireless IOSxe Client Ioslation and multicast

[Alex-Pr]

Hey everyone,

Questions - on a guest WLAN I have client isolation enabled via the Peer to Peer blocking action to drop.  I can see it blocks peer to peer unicast traffic, however multicast traffic between peers still flows.  I can limit the mdns messages by setting the mDNS mode to block but the rest of multicast messages like SSDP flows.

Is there a way to isolate the devices so it also blocks users from talking over multicast? (without disabling multicast globally?).  Perhaps via the vlan on the WLC?

This is in iosXE 

Thank you!

[jagan.chowdam]

Peer-to-peer blocking does not apply to multicast traffic.

Ref: https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/17-9/config-guide/b_wl_17_9_cg/peer-to-peer-client-support.html#:~:text=Peer%2Dto%2Dpeer%20blocking%20does,APs%20that%20broadcast%20the%20SSID.

Jagan Chowdam

/**Pls rate useful responses**/

[Alex-Pr]

Hi Jagan,

yes that matches my testing.  What is the best way to block the multicast for the specific wlan? 

thanks