Wireless/Redundant Edge Services xl Module Management and Configuration Guide WS.02.xx and greater

Table Of Contents
9-21
Fast Layer 2 Roaming and Layer 3 Mobility
Verifying and Managing Layer 3 Mobility
L3-Roams—When a Wireless Edge Services xl Module receives a reasso-
ciation request from a station with a different HM VLAN than the module
uses, it determines that a Layer 3 roam is necessary. The new module
becomes the station’s current module (CM), sends an L3-Roam message
to the HM, and begins tunneling the station’s traffic back to the HM.
Track the messages described above to verify that your Wireless Edge Services
xl Modules send the correct messages when your station completes the roams
illustrated in Figure 9-10.
Figure 9-10. Difference Between a Layer 2 Roam and a Layer 3 Roam