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:
Jan. 03, 2006
Filed:
Feb. 28, 2002
Shujin Zhang, San Mateo, CA (US);
Xi Xu, Milpitas, CA (US);
Maria Alice Dos Santos, Redwood City, CA (US);
Jane Jiaying Jin, San Jose, CA (US);
Jie Chu, Los Altos, CA (US);
Shuxian Lou, San Jose, CA (US);
Shujin Zhang, San Mateo, CA (US);
Xi Xu, Milpitas, CA (US);
Maria Alice Dos Santos, Redwood City, CA (US);
Jane Jiaying Jin, San Jose, CA (US);
Jie Chu, Los Altos, CA (US);
Shuxian Lou, San Jose, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A gateway is provided which routes a packet sent from a user to a connected network utilizing a per-user routing table. This is accomplished by extracting a source address from the packet; finding a per-user routing table corresponding to the source address, the per-user routing table containing entries corresponding to one or more currently accessible networks for the user and the range of network addresses corresponding to the currently accessible networks; extracting a destination address from the packet; seeking an entry in the matching per-user routing table with a range of network addresses containing the destination address; routing the packet to a matching network if the destination address is contained within one of the ranges of network addresses for the currently accessible networks; and routing the packet to a default network if the destination address is not contained within one of the ranges of network addresses for the currently accessible networks. This allows different users to have access to a different set of networks and allows a user to select the network he wishes to access. The gateway may also guarantee that packet are routed through a particular destination ISP or network by looking up the destination ISP or network in a table, each entry in the table having a router network address corresponding to each network currently accessible; establishing a tunneling session to the matching router network address; and forwarding the packet to the router network address through the tunneling session.