Quality of service based on logical port identifier for broadband aggregation networks

• US 9,088,619 B2
• Filed: 09/14/2005
• Issued: 07/21/2015
• Est. Priority Date: 09/14/2005
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Voit, Eric, Hertoghs, Yves, Pruss, Richard Manfred, Evans, John William
• Primary Examiner(s): NGUYEN, ANH NGOC M
• Application Number:
  US11/227,722
• Publication Number:
  US 20070076607A1
• Time in Patent Office: 3,597 Days
• Field of Search: 370/230, 370/235, 370/229, 370/252
• US Class Current: 1/1
• CPC Class Codes: H04L 43/00 Arrangements for monitoring or testing data switching networks
• CPC Class Codes: H04L 61/5014 using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]

Abstract

A provider edge (PE) device provides subscribers with access to an Internet Service Provider (ISP) network. The subscribers are connected to the PE device via a broadband aggregation device. The PE device includes a processor operable to snoop control plane traffic for a logical identifier that allows subscriber traffic having varying data plane information to be treated as a session group. The processor is further operable to instantiate the session group based on the logical identifier. A unit of the PE device applies a QOS policy to traffic flow associated with the session group. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Claims

1. A provider edge (PE) device that provides subscribers with access to an Internet Service Provider (ISP) network, the subscribers being connected to the PE device via a broadband aggregation device, the PE device comprising:

a processor;

a memory including instructions stored thereon and executable by the processor to snoop control plane traffic for a logical identifier that contains information about an access link from customer premises equipment associated with the subscribers to the broadband aggregation device, and to instantiate a session group that includes multiple sessions based on the logical identifier and to shape traffic flow associated with the session group.

2. The PE device of claim 1 wherein the traffic flow comprises a plurality of Internet Protocol (IP) sessions and the access link comprises a Layer 2 (L2) access link.

3. The PE device of claim 1 wherein the traffic flow comprises a plurality of Point-to-Point Protocol over Ethernet (PPPoE) sessions and the access link comprises a Layer 2 (L2) access link.

4. The PE device of claim 1 wherein the traffic flow comprises a plurality of sessions and the access link comprises a Layer 2 (L2) access link, the sessions including at least one Internet Protocol (IP) session &

and at least one Point-to-Point Protocol over Ethernet (PPPoE) session.

5. The PE device of claim 1 wherein the logical identifier comprises a circuit-ID of the broadband aggregation device and the traffic flow comprises Dynamic Host Configuration Protocol (DHCP) Option 82 Information transmitted from the broadband aggregation device to the PE device.

6. The PE device of claim 1 wherein the logical identifier comprises a circuit-10 of the broadband aggregation device end the traffic flow comprises Point-to-Point Protocol over Ethernet (PPPoE) tag Information transmitted from the broadband aggregation device to the PE device.

7. The PE device of claim 1 wherein the logical identifier comprises a circuit-ID of the broadband aggregation device and the traffic flow comprises Point-to-Point Protocol over Ethernet (PPPoE) tag and Dynamic Host Configuration Protocol (DHCP) Option 82 Information transmitted from the broadband aggregation device to the PE device.

8. The PE device of claim 1 wherein the broadband aggregation device comprises a Digital Subscriber Line Access Multiplexer (DSLAM) device.

9. A Broadband Remote Access Server (BRAS) device for association with an access network, the BRAS device comprising:

a port to transmit a plurality of sessions to a subscriber, the sessions including Point-to-Point Protocol over Ethernet (PPPoE) sessions, the port for connecting with a Digital Subscriber Line Access Multiplexer (DSLAM) device that connects with the subscriber via a Layer 2 (L2) access link;

processor;

a memory including instructions stored thereon and executable by the processor to snoop upstream traffic from the DSLAM to the BRAS for a logical identifier that includes information about the L2 access link, the processor using the Information to instantiate a session group comprising the multiple sessions, the information comprising Dynamic Host Configuration Protocol (DHCP) Option 82 information and a to shape traffic flow associated with the session group based on the information.

10. The BRAS device of claim 9 wherein the sessions further include a plurality of Internet Protocol (IP) sessions.

11. The BRAS device of claim 9 wherein the L2 access link comprises a permanent virtual circuit (PVC) connection.

12. The BRAS device of claim 9 wherein the information further comprises Point-to-Point Protocol over Ethernet (PPPoE) tag information.

13. A broadband aggregation network, comprising:

a broadband access device having a port that connects with a subscriber premises device, the broadband access device being operable to transmit a plurality of sessions to subscribers;

an Internet subscriber gateway (ISG) device coupled to the broadband access device, the ISG device including;

a processor; and

a memory including instructions stored thereon and executable by the processor to snoop control plane traffic of a subscriber for a logical port identifier of the broadband access device, the logical port identifier including a circuit-ID of the broadband aggregation device and the control plane traffic flow comprising Dynamic Host Configuration Protocol (DHCP) Option 82 information transmitted from the broadband aggregation device to the ISG device, the instructions also to traffic shape the sessions as a single logical group based on the logical port identifier.