Resource reservation protocol based guaranteed quality of service internet protocol connections over a switched network through proxy signaling

• US 7,778,263 B2
• Filed: 07/27/2007
• Issued: 08/17/2010
• Est. Priority Date: 07/31/2002
• Status: Expired due to Term

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Chen, Weijing, Van Vleck, Paul F., Allen, Keith Joseph
• Primary Examiner(s): PHAN, MAN U
• Application Number:
  US11/829,479
• Publication Number:
  US 20080019386A1
• Time in Patent Office: 1,117 Days
• Field of Search: 370230-235, 370351-398, 370401-466, 709243-249
• US Class Current: 370/401
• CPC Class Codes: H04L 12/4608 LAN interconnection over ATM networks
• CPC Class Codes: H04L 12/5601 Transfer mode dependent, e.g. ATM
• CPC Class Codes: H04L 45/04 Interdomain routing, e.g. hierarchical routing
• CPC Class Codes: H04L 45/10 Routing in connection-oriented networks, e.g. X.25 or ATM
• CPC Class Codes: H04L 45/50 using label swapping, e.g. multi-protocol label switch [MPLS]
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/724 at intermediate nodes, e.g. resource reservation protocol [RSVP]
• CPC Class Codes: H04L 47/785 among multiple network domains, e.g. multilateral agreements
• CPC Class Codes: H04L 47/805 QOS or priority aware
• CPC Class Codes: H04L 47/825 Involving tunnels, e.g. MPLS

Abstract

An internet protocol session is established over a switched network. A path message is forwarded to a destination bridging device that bridges the switched network and an internet protocol network. The destination bridging device has a switched network address and an internet protocol network address and directs the path message to an originating host device over the internet protocol network. A setup message is received from the destination bridging device. The setup message is received over the switched network by the destination bridging device from an originating bridging device that bridges the switched network and the internet protocol network, in response to the originating bridging device receiving the path message on behalf of the originating host device. The internet protocol session is established over the switched network between at least the destination bridging device and the originating bridging device based on forwarding the path message and receiving the setup message.

Claims

1. A method for establishing an internet protocol session over a switched network, comprising:

forwarding a path message to a destination bridging device that bridges the switched network and an internet protocol network, the destination bridging device having a switched network address and an internet protocol network address and directing the path message to an originating host device over the internet protocol network; and

receiving, from the destination bridging device, a setup message received over the switched network by the destination bridging device from an originating bridging device that bridges the switched network and the internet protocol network, in response to the originating bridging device receiving the path message on behalf of the originating host device,

wherein the internet protocol session is established over the switched network between at least the destination bridging device and the originating bridging device based on forwarding the path message and receiving the setup message.

2. The method according to claim 1,

wherein the path message is forwarded to the destination bridging device without communicating with an address server.

3. The method according to claim 1,

wherein the destination bridging device modifies the path message by inserting the switched network address into the path message prior to directing the path message to the originating host device over the internet protocol network.

4. The method according to claim 1,

wherein the setup message received by the destination bridging device over the switched network is directed to the switched network address of the destination bridging device.

5. The method according to claim 1, further comprising:

receiving, from a destination host device, a request to establish the internet protocol session with a specified quality of service, and

wherein the destination host device is incapable of resource reservation protocol signaling.

6. The method according to claim 5,

wherein the request to establish the internet protocol session is received by a resource reservation protocol proxy device associated with the destination host device.

7. The method according to claim 6,

wherein the internet protocol session is established between the originating host device and the proxy signaling device, and

wherein the proxy signaling device interfaces with the destination host device.

8. The method according to claim 1,

wherein the switched network comprising an asynchronous transfer mode network.

9. The method according to claim 1,

wherein the switched network comprises a multi-protocol label switching network.

10. The method according to claim 1,

wherein the destination bridging device modifies the path message by inserting the switched network address into a first data field of the path message;

wherein the modified path message is directed to the originating host device through at least one router in the internet protocol network by default routing, and

wherein the at least one router passes the path message without modifying the first data field.

11. The method according to claim 10,

wherein the setup message is received by the destination bridging device through at least one switching device in the switched network and is addressed to the switched network address retrieved from the first data field, and

wherein the setup message includes a resource reservation protocol reservation request message generated in response to the path message.

12. The method according to claim 10,

wherein the path message includes at least one quality of service connection parameter in a second data field;

wherein the setup message includes the at least one quality of service connection parameter; and

wherein the internet protocol session is established in accordance with the at least one quality of service connection parameter.

13. The method according to claim 12,

wherein the at least one quality of service connection parameter comprises a bandwidth.

14. The method according to claim 1,

wherein the setup message includes at least one predetermined bidirectional flow parameter received from the path message, and

wherein the internet protocol session is established in accordance with the at least one bidirectional flow parameter.

15. The method according to claim 1,

wherein the path message and the setup message include a reverse charging parameter, and

wherein accounting data for the internet protocol session is associated with the destination host device based on one of the activation or the non-activation of the reverse charging parameter.

16. A proxy device for establishing an internet protocol session over a switched network, comprising:

a forwarder that forwards a path message to a destination bridging device that bridges the switched network and an internet protocol network, the destination bridging device having a switched network address and an internet protocol network address and directing the path message to an originating host device over the internet protocol network; and

a receiver that receives, from the destination bridging device, a setup message received over the switched network by the destination bridging device from an originating bridging device that bridges the switched network and the internet protocol network, in response to the originating bridging device receiving the path message on behalf of the originating host device,

wherein the internet protocol session is established over the switched network between at least the destination bridging device and the originating bridging device based on forwarding the path message and receiving the setup message.

17. A tangible computer readable medium that stores a computer program, executable by a computer, that establishes an internet protocol session over a switched network, comprising:

a forwarding code segment that forwards a path message to a destination bridging device that bridges the switched network and an internet protocol network, the destination bridging device having a switched network address and an internet protocol network address and directing the path message to an originating host device over the internet protocol network; and

a receiving code segment that receives, from the destination bridging device, a setup message received over the switched network by the destination bridging device from an originating bridging device that bridges the switched network and the internet protocol network, in response to the originating bridging device receiving the path message on behalf of the originating host device,

wherein the internet protocol session is established over the switched network between at least the destination bridging device and the originating bridging device based on forwarding the path message and receiving the setup message.

18. The tangible computer readable medium according to claim 17,

wherein the path message comprises a resource reservation protocol path message.

19. The tangible computer readable medium according to claim 17,

wherein the path message contains at least one quality of service parameter, which is passed to the setup message, and

wherein the internet protocol session is established in accordance with the at least one quality of service parameter.

20. The tangible computer readable medium according to claim 17,

wherein the internet protocol session over the switched network comprises a switched virtual circuit connection.

21. The tangible computer readable medium according to claim 17,

wherein the setup message comprises a user-to-network interface protocol message.