Seamless roaming across wireless subnets using source address forwarding

摘要: To enable devices to detect L3 roaming users and take appropriate forwarding actions, knowledge is introduced inside a bridge in non-intrusive way. In particular, as client moves from subnet associated with first network element second element, determination made regarding whether the roaming. This done by evaluating source IP address within packet header frame received at element. If, result of step, it determined that roaming, an L2 table configured include MAC together information identifying least destination interface for use directing data traffic back towards The then forwarded. one embodiment, directed via GRE encapsulation tunnel, although any convenient tunneling mechanism can be used. According another feature, given cached foreign access point used continue seamlessly receive inbound prior or during configuration (i.e., before outbound actually sent client).