Technique for handling layer 2 roaming in a network of wireless switches supporting layer 3 mobility within a mobility domain
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United States of America Patent
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Issued Date -
Jan 3, 2008
app pub date -
Jun 30, 2006
filing date -
Jun 30, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In a network including a wireless client device, a home wireless switch of the wireless client device, and a new wireless switch within the same mobility domain as the home wireless switch, the new wireless switch can be configured to become a new home/current wireless switch for the wireless client device, and to transmit a layer 2 (L2) roam message to the home wireless switch, when the new wireless switch determines that the wireless client device has roamed from the home wireless switch to the new wireless switch. The L2 roam message indicates that the wireless client device has roamed within the same VLAN or L3 subnet. The L2 roam message comprises an IP address of the new home wireless switch, and an IP address of the new current wireless switch. The home wireless switch is configured to forward the L2 roam message to peer wireless switches within the mobility domain. As such, the wireless client device remains mapped to the same VLAN ID at the home wireless switch and the new current wireless switch, and maintains the same IP address despite roaming to the new current wireless switch.
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