Electrical computers and digital processing systems: multicomput – Network computer configuring – Reconfiguring
Reexamination Certificate
2000-02-25
2009-08-18
Avellino, Joseph E (Department: 2446)
Electrical computers and digital processing systems: multicomput
Network computer configuring
Reconfiguring
C709S227000, C709S219000, C709S222000
Reexamination Certificate
active
07577725
ABSTRACT:
A network access server (NAS) provides a connection to a user in a data communications network, where the NAS is capable of communicating with a home gateway server (HGS) maintaining a pool of IP addresses for allocation to authorized users associated with the NAS. The NAS includes a first memory for storing an identification of a user, a requester for asking the HGS for an IP address on behalf of the user; and a second memory associated with the first memory for storing the IP address of the user received from the HGS. The NAS may further include a detector for periodically detecting connection of the user to the NAS and a keep-alive sender for periodically informing the HGS that the user is still connected to the NAS, a receiver for receiving periodic queries from the HGS about the status of the user connection to the NAS and a responder responsive to the periodic queries for informing the HGS that the user is still connected to the NAS, and/or a receiver for receiving periodic signals from the user and a forwarder responsive to the receiver for forwarding information to the HGS that the user is still connected to the NAS. A home gateway server (HGS) provides mechanisms to assign an IP address to a user via a NAS, and to monitor the status of the IP address after assignment.
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Sitaraman Aravind
Zhang Shujin
Avellino Joseph E
BainwoodHuang
Cisco Technology Inc.
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