The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 2013
Filed:
May. 04, 2010
Patrice Calhoun, Pleasanton, CA (US);
Abhijit Choudhury, Cupertino, CA (US);
Rohit Suri, Fremont, CA (US);
Sudhir Jain, Fremont, CA (US);
Bhanu Gopalasetty, San Jose, CA (US);
Navindra Yadav, Cupertino, CA (US);
Fusun Ertemalp, Palo Alto, CA (US);
Kent Leung, Palo Alto, CA (US);
Patrice Calhoun, Pleasanton, CA (US);
Abhijit Choudhury, Cupertino, CA (US);
Rohit Suri, Fremont, CA (US);
Sudhir Jain, Fremont, CA (US);
Bhanu Gopalasetty, San Jose, CA (US);
Navindra Yadav, Cupertino, CA (US);
Fusun Ertemalp, Palo Alto, CA (US);
Kent Leung, Palo Alto, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Techniques are provided to enable support of roaming wireless devices in a network such that the wireless devices can keep their Internet Protocol (IP) addresses as they roam across mobility sub-domains. Traffic for a wireless device that roams is tunneled back to the access switch that serves the IP subnet which includes an IP address for the wireless device. Traffic is tunneled back to that access switch for the wireless device when the wireless device roams to another access switch which does not serve the IP subnet for the wireless device in the same mobility sub-domain and when the wireless device roams to a different mobility sub-domain, in which case the traffic is tunneled between tunneling endpoints in the respective mobility sub-domains.