PREDICTIVE ROAMING BETWEEN SUBNETS

摘要

A network device of a subnet determines predictive roaming information for a wireless client. Predictive roaming information can identify the wireless client and a home network subnet of the wireless client. The network device provides predictive roaming information associated with a wireless client to neighboring subnets. Neighboring subnets store received predictive roaming information, and use the predictive roaming information if the wireless client roams to them.

主权项

1. A system comprising:
a first home agent of a first subnet, wherein the first home agent has a first home agent address and performs the operation of maintaining a second home agent address of a second home agent of a second subnet; a first network device of the first subnet, wherein the first network device performs the operations of:
receiving predictive roaming information from the second subnet;receiving first identifying information from a first wireless client;matching a first address in the predictive roaming information with the first identifying information, wherein a match indicates that the first wireless client has roamed to the first subnet, the first address uniquely identifying the first wireless client within the first subnet and the second subnet;matching a second address in the predictive roaming information with the first identifying information, wherein a match indicates that the first wireless client has roamed from the second subnet, the second address uniquely identifying the first wireless client within the second subnet and associating the first wireless client with the second subnet;obtaining from the first home agent the second home agent address of the second home agent based on the second address;establishing a tunnel between the first network device of the first subnet and the second home agent of the second subnet using the second home agent address obtained.