Method and apparatus for L2TP forward error correction
First Claim
1. A method of establishing an L2TP tunnel between a first IP network and a first private IP network comprising the steps of:
- coupling a routing device of the first IP network to a public network;
coupling a routing device of the first private IP network to the public network;
initiating an L2TP tunnel from either the routing device of the first IP network or the routing device of the private IP network;
authenticating the first IP network;
providing the first IP network with an IP address from an address space of the first private IP network;
maintaining the L2TP tunnel between the routing device of the first IP network and the routing device of the second private IP network;
tunneling data traffic between the first and the second IP network over the public network via the L2TP tunnel; and
utilizing a control mechanism for providing L2TP tunnel traffic error correction.
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Accused Products
Abstract
Method and apparatus of establishing an L2TP tunnel. A routing device of a first IP network is coupled to a public network and a routing device of the second private IP network is coupled to the public network. An L2TP tunnel is initiated and an IP address from an address space of the first private IP network is provided. An L2TP tunnel is maintained between the routing device of the first IP network and the routing device of the second private IP network. Data traffic is tunneled between the first and the second IP network over the public network via the L2TP tunnel. A control mechanism is utilized for providing L2TP tunnel traffic error correction.
124 Citations
19 Claims
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1. A method of establishing an L2TP tunnel between a first IP network and a first private IP network comprising the steps of:
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coupling a routing device of the first IP network to a public network;
coupling a routing device of the first private IP network to the public network;
initiating an L2TP tunnel from either the routing device of the first IP network or the routing device of the private IP network;
authenticating the first IP network;
providing the first IP network with an IP address from an address space of the first private IP network;
maintaining the L2TP tunnel between the routing device of the first IP network and the routing device of the second private IP network;
tunneling data traffic between the first and the second IP network over the public network via the L2TP tunnel; and
utilizing a control mechanism for providing L2TP tunnel traffic error correction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of establishing an L2TP call between a first IP network and a first private IP network comprising the steps of:
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coupling a routing device of the first IP network to a public network;
coupling a routing device of the first private IP network to the public network;
initiating an L2TP call between the routing device of the first IP network and the routing device of the private IP network;
authenticating the first IP network;
providing the first IP network with an IP address from an address space of the first private IP network;
maintaining the L2TP call between the routing device of the first IP network and the routing device of the second private IP network;
tunneling L2TP call traffic between the first and the second IP network over the public network; and
utilizing a control mechanism for providing L2TP call traffic error correction.
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13. An L2TP protocol stack including
a tunnel session; - and
a tunnel encapsulation wherein said tunnel encapsulation comprises control packets for initiating forward error correction. - View Dependent Claims (14)
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15. L2TP communication link between a remote user and a private IP network comprising the steps of:
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establishing an L2TP tunnel between the originating user and an L2TP Network Server at the private IP Network;
exchanging information between the user and the private IP Network;
authenticating the remote user;
providing the remote user with an IP address from a private IP network'"'"'s address space;
receiving an incoming tunnel connection from the dial up user;
determining whether a switched tunnel connection needs to be made to the L2TP Network Server in accordance with information relating to the remote user;
initiating a switched tunnel connection for switching traffic from the incoming tunnel connection to the L2TP Network Server the switched tunnel connection; and
utilizing control messages to specify a first error correction encoding/decoding scheme for the L2TP communication link.
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16. A network in which L2TP information packets are transmitted between a user and a receiver, the network comprising:
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A dialup link;
a dialup user dialing into an Internet Service Provider over the dialup link;
a Remote Access Server serving as an L2TP Access Concentrator;
an L2TP tunnel established on behalf of the dialup user to a L2TP Network Server (LNS at a private IP network by adding FEC AVPs to various tunnel establishment and/or teardown messages. - View Dependent Claims (17, 18, 19)
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Specification