公开(公告)号：US11218918B2

公开(公告)日：2022-01-04

申请号：US16939749

申请日：2020-07-27

Applicant: Cisco Technology, Inc.

Inventor： Prashant Kumar ,  Tirthankar Ghose

IPC: H04W36/00 ,  H04L9/06 ,  H04W12/04 ,  H04W12/06 ,  H04W36/08 ,  H04W36/18

Abstract: Techniques for efficient roaming of clients between access points (APs) of a wireless data communications network are described. A first AP receives a request for a first client device to join the network. The request specifies at least a unique identifier for the first client device. An identifier for a second AP is identified by processing the unique identifier using a predefined hash function. The second AP is one of at least two APs configured to each redundantly store network state information relating to the first client device. A network address of the second AP is determined. A first request to is transmitted to the network address, for network state information including a pairwise master key (PMK) and profile information. The PMK and the profile information are received. The first client device is authenticated and a connection is established between the first client device and the network.

公开(公告)号：US10728807B1

公开(公告)日：2020-07-28

申请号：US16291752

申请日：2019-03-04

Applicant: Cisco Technology, Inc.

Inventor： Prashant Kumar ,  Tirthankar Ghose

IPC: H04W36/00 ,  H04W36/08 ,  H04W36/18 ,  H04W12/06 ,  H04L9/06 ,  H04W12/04

Abstract: Techniques for efficient roaming of clients between access points (APs) of a wireless data communications network are described. A first AP can receive a request for the first client to join the network. The request can specify a unique identifier for the first client. An identifier for a second AP can be determined by processing the unique identifier for the first client using a predefined hash function. A network address of the second AP can be determined using the determined identifier for the second AP. The first AP can transmit a request to the determined network address of the second AP to query for network state information corresponding to the first client, and upon receiving a pairwise master key (PMK) associated with the first client, can authenticate the first client to join the network.