IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0131028
(2008-05-30)
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등록번호 |
US-8474023
(2013-06-25)
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발명자
/ 주소 |
- Verma, Vineet
- Matta, Sudheer Poorna Chandra
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
170 |
초록
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In wireless networking, such as per the IEEE 802.11 standard, a technique automatically republishes an authentication credential to a global credential repository. A station can have a first credential, as is created when the station connects to a first access node of a wireless network. Upon trying
In wireless networking, such as per the IEEE 802.11 standard, a technique automatically republishes an authentication credential to a global credential repository. A station can have a first credential, as is created when the station connects to a first access node of a wireless network. Upon trying and failing to connect to a second access node of the wireless network, the station can have a second credential created and published to the global credential repository. In some situations, the station then roams back to the first access node using the first credential. Efficiently, when the station uses the first credential at the first access node, the first credential can be automatically republished as a global credential. The automatic republishing of the first credential can ensure that the station is able to access the wireless network via various access nodes when roaming.
대표청구항
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1. A method, performed by one or more devices, the method comprising: publishing, by the one or more devices and in a memory storing credentials associated with a plurality of stations that access a network, at least a portion of a first credential as a global credential, the first credential being
1. A method, performed by one or more devices, the method comprising: publishing, by the one or more devices and in a memory storing credentials associated with a plurality of stations that access a network, at least a portion of a first credential as a global credential, the first credential being used by a plurality of access nodes in connecting a particular station, of the plurality of stations, to the network;publishing, by the one or more devices, at least a portion of a second credential as the global credential, the second credential being used by the plurality of access nodes in connecting the particular station to the network,the second credential being different than the first credential;receiving, at the one or more devices, a request from the particular station to re-connect to the network using the first credential; andautomatically overwriting, by the one or more devices and based on receiving the request to re-connect to the network using the first credential, the second credential with the first credential, the first credential being used by the plurality of access nodes in connecting the particular station to the network. 2. The method of claim 1, where the first credential includes a pair-wise master key (PMK). 3. The method of claim 1, further comprising: transmitting a transient key associated with the first credential to a first access node of the plurality of access nodes; andidentifying, by the first access node, a master key associated with the transient key. 4. The method of claim 1, further comprising republishing the first credential to the plurality of access nodes. 5. The method of claim 1, further comprising storing the first credential as one or more copies on one or more wireless switches coupling the plurality of access nodes. 6. The method of claim 1, further comprising storing a copy of the global credential in each access node of the plurality of access nodes. 7. A system comprising: a first device, associated with a network, anda memory, the memory storing credentials associated with a plurality of stations that access the network,the first device to: connect a station, of the plurality of stations, with the network using a first credential,publish, based on connecting the station with the network, at least a portion of the first credential to the memory, andexchange, using the first credential, data with the station; anda second device, associated with the network and the memory, the second device to: attempt to connect the station to the network using the first credential,connect the station to the network using a second credential when the second device is unable to connect the station to the network using the first credential, andpublish the second credential to the memory based on connecting the station to the network using the second credential;the first device being further to: receive a request from the station to connect to the network using the first credential after the second device publishes the second credential to the memory,connect, based on receiving the request to connect to the network using the first credential, the station to the network using the first credential, andautomatically republish, based on connecting the station to the network using the first credential, the first credential to the memory by overwriting the second credential with the first credential. 8. The system of claim 7, where the memory includes a cache. 9. The system of claim 7, where a first copy of the credentials associated with the plurality of stations is stored on a first wireless switch connected to the first device and a second copy of the credentials associated with a plurality of stations is stored on a second wireless switch connected to the second device. 10. The system of claim 7, where at least one of the first credential or the second credential includes a pair-wise master key (PMK). 11. A method comprising: receiving, at a first device and from a station, a first request for a first authentication credential;transmitting, by the first device and to a credential creator, a second request for the first authentication credential based on the first request from the station;receiving, at the first device, the first authentication credential, from the credential creator, the first authentication credential authorizing the station to transmit and receive data with a plurality of devices;publishing, by the first device and to a credential cache, at least a portion of the first authentication credential as a global authentication credential shared with the plurality of devices;receiving, at a second device and from the station, a third request for a second authentication credential;transmitting, by the second device and to the credential creator and based on receiving the third request, a fourth request for the second authentication credential;receiving, at the second device and from the credential creator, the second authentication credential;publishing, by the second device and to the credential cache, at least a portion of the second authentication credential as the global authentication credential;receiving, at the first device, a request from the station to connect to a network using the first authentication credential; andautomatically republishing, by the first device and to the credential cache, at least a portion of the first authentication credential as the global credential by overwriting the second authentication credential with the first authentication credential. 12. The method of claim 11, where the credential creator is coupled to the first device and the second device and where, when a credential is created, the credential creator transmits the credential to each of the first device and the second device. 13. The method of claim 11, where the first device and the second device each store a copy of the information stored in the credential cache. 14. The method of claim 11, where the first authentication credential includes a pair-wise master key (PMK). 15. The method of claim 11, where automatically republishing the at least a portion of the first authentication credential includes automatically republishing a PMK associated with the first authentication credential. 16. The method of claim 11, further comprising: transmitting, from the first device to the second device, changes to the credential cache; andstoring the changes in a copy of the credential cache stored at the second device.
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