Roaming Within Layer 3 Boundaries - SonicWALL SonicPoint Administrator's Manual

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Roaming Within Layer 3 Boundaries

In configurations where a single SonicPoint or multiple SonicPoints are connected to a single
interface on a SonicWALL security appliance, roaming (under most circumstances) will be seamless
to the user since the client connection is terminated at the security appliance's interface rather than at
the individual SonicPoint. Consider the following configuration:
In the above configuration, the WLAN Zone has WiFiSec enforced, but the 'WLAN GroupVPN' does
not have 'Use DHCP to obtain Virtual IP for this Connection' enabled. ClientA associates with
SonicPoint1, and received a DHCP lease of 10.1.1.10. All wireless traffic entering SonicPoint1
traverses the X2 interface. As ClientA moves through the network, the wireless client adapter will at
some point make a decision to roam to SonicPoint2. Upon doing so, the wireless client adapter will
preserve the same DHCP lease (10.1.1.10) and in most cases, there should be no perceptible
interruption to traffic.
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