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Need to block Apple TV discovery across WAN links

davidwaldrop
New Contributor
I have a ICX 7450 and multiple ICX 7250s connected using OSPF on a layer 2 WAN.  Many of the sites have Apple TV devices.  Locations are able to see the Apple TV's from all locations.  Therefore, I need to block this discovery and keep it contained at each location.  What ports do I need to configure in an ACL to drop this type of traffic? 
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