Cisco Cisco IP Phone 8841 Guía De Diseño
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Cisco IP Phone 8861 and 8865 Wireless LAN Deployment Guide
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Enable Link Aggregation (LAG) if utilizing multiple ports on the Cisco Wireless LAN Controller.
Configure the desired AP multicast mode.
Configure the desired AP multicast mode.
If utilizing multicast, then Enable Global Multicast Mode and Enable IGMP Snooping should be enabled.
If utilizing layer 3 mobility, then Symmetric Mobility Tunneling should be Enabled.
In the recent versions, Symmetric Mobility Tunneling is enabled by default and non-configurable.