Foreign/Anchor Scenario between 9800 WLCs
For mobility guest scenarios, there are two main controller roles:
- Foreign controller: this WLC owns the layer 2 or wireless side. it has access points connected to it. All client traffic for the anchored WLANs is encapsulated into the mobility tunnel to be sent to the anchor, it does not exit locally
- Anchor controller: this is the layer 3 exit point. It receives the mobilty tunnels from the foreign controllers, and decapsulate or terminate the client traffic into the exit point (vlan). This is the point were the clients arel be seen in the network, thus the anchor name
