System and method of fast roaming in enterprise fabric networks

A method of roaming in an enterprise fabric architecture having a wireless LAN controller (WLC), a first network device (SW1), a second network device (SW2), a border node (BN) and a controller, the method comprising:

• when a client has roamed from the first network device to the second network device and has reassociated with the wireless LAN controller through the second switch, updating, at one or more database managed by the controller, one or more routing associated entries in the one or more database with a new routing value associated with the second network device to which the client has roamed, the new routing value entry being associated with the client identifier and a virtual network identifier value for an enterprise fabric protocol;
• correlating, at the controller, the client identifier or the virtual network identifier value to entries in the one or more database to find one or more other virtual network identifier entries;
• updating the one or more databases with the new routing value for each of the found virtual network identifier entries;
• and
• sending, from the controller, a notification message to the first network device and the second network device, wherein the notification message includes the new routing value.

A non-transitory computer readable medium for fast roaming in an enterprise network, the non-transitory computer readable medium having instructions stored thereon, wherein executed of the instructions by a processor, cause the processor to:

• in response to a client having roamed from a first network device to a second network device and having re-associated with a wireless LAN controller through the second network device, update, at one or more databases, one or more routing values in the one or more database with a new routing value associated with the second network device to which the client has roamed, the being associated with a L2-VNID associated with a Media Access Control (MAC) physical address associated with the client;
• correlate the client identifier or L2-VNID to find all IP address(es) associated with the client or all L3-VNID associated with the client;
• update the database with a new routing location (RLOC) for each of the found IP address(es) or found L3-VNID;
• and
• send a notification message to the first network device and second network device, wherein the notification message includes the new RLOC value.