TRAFFIC FLOW CONTROL BASED ON VLAN AND PRIORITY

• US 20120170462A1
• Filed: 01/05/2011
• Published: 07/05/2012
• Est. Priority Date: 01/05/2011
• Status: Abandoned Application

• Current Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Original Assignee: Alcatel-Lucent USA, Inc. (Nokia Corporation)
• Inventors: Sinha, Abhishek
• Application Number:
  US12/984,666
• Publication Number:
  US 20120170462A1
• Time in Patent Office: Days
• US Class Current: 370/236
• CPC Class Codes: H04L 12/4641 Virtual LANs, VLANs, e.g. virtual private networks [VPN] LAN interconnection over a bridge based backbone H04L12/462; encapsulation techniques H04L12/4633; routing of packets H04L45/00; packet switches H04L49/00; virtual private networks for security H04L63/0272
• CPC Class Codes: H04L 47/12 Avoiding congestion; Recovering from congestion
• CPC Class Codes: H04L 47/2483 involving identification of individual flows
• CPC Class Codes: H04L 47/266 Stopping or restarting the source, e.g. X-on or X-off

Abstract

A method for controlling traffic flow at a traffic routing device of a network comprises a plurality of operations. An operation is performed for determining an instance of traffic flow congestion for traffic of a particular VLAN (virtual local area network) flow control group and having a particular priority. The particular VLAN flow control group and the particular priority jointly define a particular prioritized VLAN flow control group. An operation is performed for issuing traffic flow instructions for causing flow of the traffic of the particular prioritized VLAN flow control group to be temporarily inhibited. Thereafter, an operation is performed for inhibiting transmission of traffic for the particular prioritized VLAN flow control group at a particular traffic routing device in response to the particular traffic routing device receiving the traffic flow instructions.

Claims

1. A method for controlling traffic flow at a traffic routing device of a network, comprising:

at least one data processing device accessing, from memory coupled to said at least one data processing device, instructions causing said at least one data processing device to determine an instance of traffic flow congestion for traffic of a particular VLAN (virtual local area network) flow control group and having a particular priority, wherein the particular VLAN flow control group and the particular priority jointly define a particular prioritized VLAN flow control group;

said at least one data processing device accessing, from said memory, instructions causing said at least one data processing device to issue traffic flow instructions for causing flow of said traffic of the particular prioritized VLAN flow control group to be temporarily inhibited; and

said at least one data processing device accessing, from said memory, instructions causing said at least one data processing device to inhibit transmission of traffic for the particular prioritized VLAN flow control group at a particular traffic routing device in response to the particular traffic routing device receiving said traffic flow instructions.

2. The method of claim 1 wherein the particular VLAN flow control group is a logically partitioned subset of VLANs of a pipeline defined by a link aggregation.

3. The method of claim 2 wherein the particular VLAN flow control group consists of VLANs over which data from a single data source is carried.

4. The method of claim 1 wherein the particular VLAN flow control group consists of VLANs over which data from a single data source is carried.

5. The method of claim 1, further comprising:

said at least one data processing device accessing, from said memory, instructions causing said at least one data processing device to maintain traffic flow information on a combined basis of VLAN flow control group and priority.

6. The method of claim 5 wherein said traffic flow information includes:

an ingress pipeline threshold for the particular prioritized VLAN flow control group;

buffer consumption statistics for an ingress pipeline of the particular prioritized VLAN flow control group; and

at least one of flow based egress queues and support of control of transmit for the particular VLAN flow control group.

7. The method of claim 5, further comprising:

said at least one data processing device accessing, from said memory, instructions causing said at least one data processing device to inhibit transmission of traffic for the particular prioritized VLAN flow control group at a particular traffic routing device in response to the particular traffic routing device receiving said traffic flow instructions.

8. The method of claim 7 wherein:

the particular VLAN flow control group consists of VLANs over which data from a single data source is carried; and

the particular VLAN flow control group is a logically partitioned subset of VLANs of a pipeline defined by a link aggregation.

9. A traffic routing device for a network, comprising:

at least one data processing device;

instructions processable by said at least one data processing device; and

an apparatus from which said instructions are accessible by said at least one data processing device;

wherein said instructions are configured for causing said at least one data processing device to;

determine an instance of traffic flow congestion for traffic of a particular VLAN (virtual local area network) flow control group and having a particular priority, wherein the particular VLAN flow control group and the particular priority jointly define a particular prioritized VLAN flow control group; and

issue traffic flow instructions for causing flow of said traffic of the particular prioritized VLAN flow control group to be temporarily inhibited.

10. The traffic routing device of claim 9 wherein said instructions are further configured for causing said at least one data processing device to:

inhibit transmission of traffic for the particular prioritized VLAN flow control group at a particular traffic routing device in response to the particular traffic routing device receiving said traffic flow instructions.

11. The traffic routing device of claim 9 wherein the particular VLAN flow control group is a logically partitioned subset of VLANs of a pipeline defined by a link aggregation.

12. The traffic routing device of claim 11 wherein the particular VLAN flow control group consists of VLANs over which data from a single data source is carried.

13. The traffic routing device of claim 12 wherein said instructions are further configured for causing said at least one data processing device to maintain traffic flow information on a combined basis of VLAN flow control group and priority.

14. The traffic routing device of claim 13 wherein said instructions are further configured for causing said at least one data processing device to inhibit transmission of traffic for the particular prioritized VLAN flow control group at a particular traffic routing device in response to the particular traffic routing device receiving said traffic flow instructions.

15. A computer-readable medium having tangibly embodied thereon and accessible therefrom a set of instructions interpretable by at least one data processing device, said set of instructions configured for causing said at least one data processing device to carry out operations for:

determining an instance of traffic flow congestion for traffic of a particular VLAN (virtual local area network) flow control group and having a particular priority, wherein the particular VLAN flow control group and the particular priority jointly define a particular prioritized VLAN flow control group; and

issuing traffic flow instructions for causing flow of said traffic of the particular prioritized VLAN flow control group to be temporarily inhibited.

16. The computer-readable medium of claim 15 wherein said set of instructions are further configured for causing said at least one data processing device to carry out operations for:

inhibiting transmission of traffic for the particular prioritized VLAN flow control group at a particular traffic routing device in response to the particular traffic routing device receiving said traffic flow instructions.

17. The computer-readable medium of claim 15 wherein the particular VLAN flow control group is a logically partitioned subset of VLANs of a pipeline defined by a link aggregation.

18. The computer-readable medium of claim 17 wherein the particular VLAN flow control group consists of VLANs over which data from a single data source is carried.

19. The computer-readable medium of claim 18 wherein said set of instructions are further configured for causing said at least one data processing device to carry out operations for:

maintaining traffic flow information on a combined basis of VLAN flow control group and priority.

20. The computer-readable medium of claim 19 wherein said set of instructions are further configured for causing said at least one data processing device to carry out operations for:

inhibit transmission of traffic for the particular prioritized VLAN flow control group at a particular traffic routing device in response to the particular traffic routing device receiving said traffic flow instructions.