A company deploys a Cisco wireless network over a large campus. The wireless network uses lightweight APs and multiple WLCs. A network technician walks around the campus to verify that wireless clients can roam smoothly between APs bound to different WLCs and assigned different VLANs and IP subnets. The technician verifies that while the client roams around campus, the client retains the same VLAN and IP address assigned. Which roaming scenario is the technician verifying?
- Layer 2 roaming
- Layer 3 roaming
- local-to-local roaming
- intracontroller roaming
| Explanation & Hint:
In a Cisco wireless network, when a client initiates an intercontroller roam, the two controllers involved can compare the VLAN numbers that are assigned to the respective WLAN interfaces. If the VLAN IDs are the same, the client undergoes a Layer 2 intercontroller roam (also called local-to-local roam) and can continue to use the original IP address on the new controller. If the two VLAN IDs differ, the controllers arrange a Layer 3 roam that will allow the client to keep using the same IP address. |