PINNING AND PROTECTION ON LINK AGGREGATION GROUPS

• US 20090141622A1
• Filed: 12/03/2007
• Published: 06/04/2009
• Est. Priority Date: 12/03/2007
• Status: Active Grant

• Current Assignee: Verizon Patent and Licensing Incorporated (Verizon Communications Inc.)
• Original Assignee: Verizon Services Organization Incorporated (Verizon Communications Inc.)
• Inventors: BITAR, Nabil N.
• Granted Patent: US 8,077,613 B2
• Time in Patent Office: Days
• US Class Current: 370/225
• CPC Class Codes: H04L 41/0896 Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities flow or congestion control using dynamic resource allocation, e.g. in-call renegotiation, H04L47/76
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 45/245 Link aggregation, e.g. trunking
• CPC Class Codes: H04L 45/28 using route fault recovery
• CPC Class Codes: H04L 47/805 QOS or priority aware
• CPC Class Codes: H04L 47/806 Broadcast or multicast traffic
• CPC Class Codes: Y02D 30/50 in wire-line communication networks, e.g. low power modes or reduced link rate

Abstract

A device may assign a virtual local area network (VLAN) to one or more specific links in a link aggregation group (LAG), and send traffic from the VLAN on the assigned one or more specific LAG links. Traffic from the same VLAN may be sent on one link in the LAG by selecting a hashing criterion or by pinning the VLAN to a primary link in the LAG and another link for redundancy purposes.

Claims

1. A method comprising:

associating a link in a link aggregation group (LAG) to a first packet buffer queue for point-to-point services;

associating the LAG link to a second packet buffer queue for multi-point services; and

allocating bandwidth to the first and second packet buffer queues.

2. The method of claim 1, further comprising:

defining a class of service for the point-to-point services.

3. The method of claim 1, further comprising:

defining a class of service for the multi-point services.

4. The method of claim 1, further comprising:

assigning a virtual local area network (VLAN) to one or more specific links in the LAG; and

sending traffic from the VLAN on the assigned one or more specific LAG links.

5. The method of claim 4, further comprising:

admitting the VLAN to a queue corresponding to the assigned one or more specific LAG links if a bandwidth of the VLAN does not exceed a bandwidth of the queue.

6. The method of claim 4, further comprising:

looking up a media access control (MAC) address destination and a corresponding (VLAN) value to determine a match;

retrieving a forwarding data structure associated with the match; and

determining one or more links in the LAG, capable of receiving traffic, based on the forwarding data structure.

7. The method of claim 6, further comprising:

receiving the traffic; and

sending the traffic on the determined one or more LAG links.

8. The method of claim 6, further comprising:

receiving the traffic;

detecting a link failure in the LAG;

removing the failed link from the LAG; and

sending the traffic on the remaining, determined one or more LAG links.

9. A method comprising:

assigning a virtual local area network (VLAN) to one or more specific links in a link aggregation group (LAG); and

sending traffic from the VLAN on the assigned one or more specific LAG links.

10. The method of claim 9, further comprising:

admitting the VLAN to a queue corresponding to the assigned one or more specific LAG links if a bandwidth of the VLAN does not exceed a bandwidth of the queue.

11. The method of claim 9, further comprising:

looking up a media access control (MAC) address destination and a corresponding (VLAN) value to determine a match;

retrieving a forwarding data structure associated with the match; and

determining one or more links in the LAG, capable of receiving traffic, based on the forwarding data structure.

12. The method of claim 11, further comprising:

receiving the traffic; and

sending the traffic on the determined one or more LAG links.

13. The method of claim 11, further comprising:

receiving the traffic;

detecting a link failure in the LAG;

removing the failed link from the LAG; and

sending the traffic on the remaining, determined one or more LAG links.

14. A device comprising:

processing logic to;

associate a link in a link aggregation group (LAG) to a first packet buffer queue for point-to-point services,

associate the LAG link to a second packet buffer queue for multi-point services, and

allocate bandwidth to the first and second packet buffer queues.

15. The device of claim 14, where the processing logic is further configured to:

define a class of service for the point-to-point services; and

define a class of service for the multi-point services.

16. The device of claim 14, where the processing logic is further configured to:

assign a virtual local area network (VLAN) to the LAG link; and

send traffic from the VLAN on the LAG link.

17. The device of claim 16, where the processing logic is further configured to:

admit the VLAN to a queue corresponding to the assigned one or more specific LAG links if a bandwidth of the VLAN does not exceed a bandwidth of the queue.

18. The device of claim 16, where the processing logic is further configured to:

look up a media access control (MAC) address destination and a corresponding virtual local area network (VLAN) value to determine a match;

retrieve a forwarding data structure associated with the match; and

determine one or more LAG links capable of receiving traffic based on the forwarding data structure.

19. The device of claim 18, where the processing logic is further configured to:

send the traffic on the determined one or more LAG links.

20. The device of claim 18, where the processing logic is further configured to:

detect a link failure in the LAG;

remove the failed link from the LAG; and

send the traffic on the remaining, determined one or more LAG links.

21. A system comprising:

means for associating a link in a link aggregation group (LAG) to a first packet buffer queue for point-to-point services;

means for associating the LAG link to a second packet buffer queue for multi-point services; and

means for allocating bandwidth to the first and second packet buffer queues.

22. A method comprising:

receiving traffic from a virtual local area network (VLAN); and

transmitting traffic from the VLAN on one link in a link aggregation group (LAG) when the link is alive based on a hashing parameter that includes the VLAN.

23. The method of claim 22, where the hashing parameter further includes the VLAN and an input port for point-to-point service based traffic.

24. A method comprising:

pinning a virtual local area network (VLAN) to a primary link and a redundant link in a link aggregation group (LAG);

forwarding traffic from the same VLAN on the primary link when the primary link is alive; and

forwarding traffic from the same VLAN on the redundant link when the primary link fails and the redundant link is alive.

25. The method of claim 24, where pinning a virtual local area network (VLAN) is based on a bandwidth admission control of the VLAN bandwidth for a class of service to a corresponding queue.