Signaling Describing the Operation of a Link Bundle

• US 20120281541A1
• Filed: 05/04/2011
• Published: 11/08/2012
• Est. Priority Date: 05/04/2011
• Status: Abandoned Application

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Owladi, Peyman, Ketley, Neil Robert, Palmer, Alastair Marcus
• Application Number:
  US13/100,496
• Publication Number:
  US 20120281541A1
• Time in Patent Office: Days
• US Class Current: 370/241
• CPC Class Codes: H04L 45/245 Link aggregation, e.g. trunking
• CPC Class Codes: H04L 47/20 Traffic policing
• CPC Class Codes: H04L 47/263 Rate modification at the source after receiving feedback
• CPC Class Codes: Y02D 30/50 in wire-line communication networks, e.g. low power modes or reduced link rate

Abstract

In one embodiment, a first device communicates with a second device, including sending and receiving one or more link bundle control packets and/or link control packets over a link bundle. The link bundle includes a plurality of links with each link being coupled between the first device and the second device for communicating information. These link bundle control packets are directed at the operation of the link bundle in its entirety; while the link control packets which are directed to the operation of a corresponding single particular link. The first device communicates with the second device, including operating the link bundle according to these one or more link bundle control packets and/or link control packets.

Claims

1. A method, comprising:

communicating, by a first device with a second device, one or more link bundle control packets over a link bundle;

wherein the link bundle includes a plurality of links, with each of the plurality of links being coupled between the first device and the second device;

wherein said one or more link bundle control packets are directed at the operation of the link bundle in its entirety; and

wherein said one or more link bundle control packets are communicated over one or more of the plurality of links; and

communicating information by the first device with the second device over the link bundle operated according to control information included in said one or more link bundle control packets.

2. The method of claim 1, wherein said one or more link bundle control packets includes an identification of an operational state of the link bundle as being active.

3. The method of claim 2, wherein said operation of communicating information includes communicating data packets over each of the plurality of links.

4. The method of claim 3, wherein said operation of communicating said one or more link bundle control packets identifying the operational state of the link bundle as being active includes:

communicating a link bundle control packet, including said identification of the operational state of the link bundle being active, of said one or more link bundle control packets over each of the plurality of links.

5. The method of claim 1, wherein said one or more link bundle control packets include an identification of an operational state of the link bundle as being inactive.

6. The method of claim 5, wherein the second device ceases to consider the operational state of the link bundle as being active in response to at least one of said one or more link bundle control packets including the identification of the operational state of the link bundle as being inactive.

7. The method of claim 5, wherein said operation of communicating information includes ceasing to communicate data packets over the link bundle.

8. The method of claim 5, comprising:

in response to determining that the number of active links of the plurality of links does not provide sufficient bandwidth, the first device performing said communicating operation of the operational state of the link bundle as being inactive.

9. The method of claim 1, wherein said operation of communicating said one or more link bundle control packets of the link bundle includes:

communicating a link bundle control packet of said one or more link bundle control packets over each of the plurality of links.

10. The method of claim 1, comprising:

in response to the first device receiving from the second device over the link bundle a particular link bundle control packet including an identification that the operational state of the link bundle is inactive, the first device ceasing to send data packets over the link bundle to the second device.

11. The method of claim 1, comprising:

communicating, from the first device to the second device, one or more link control packets over links of the plurality of links, with each particular link control packet of said one or more link control packets being directed at the operation of the particular link over which said particular link control packet is being said communicated from the first device to the second device.

12. The method of claim 11, wherein said one or more link control packets includes a plurality of link particular ordering packets;

wherein each link particular ordering packet of the plurality of link particular ordering packets is sent over a different one of the plurality of links and specifies a link bundle ordering for said different one of the plurality of links.

13. The method of claim 11, wherein said one or more link control packets each include one or more values representing a rate at which the second device should send information to the first device across the particular link over which said link control packet is being said communicated from the first device to the second device, or include one or more values representing a rate at which the first device is sending information to the second device over which said rate control packet is being said communicated from the first device to the second device.

14. A method, comprising:

communicating, from a first device to a second device, one or more link control packets over each particular link of one or more of a plurality of links of a link bundle;

wherein the link bundle includes the plurality of links, with each link of the plurality of links being coupled between the first device and the second device;

wherein said one or more link control packets include one or more values representing operational details for said particular link over which said link control packet is being said communicated; and

communicating information by the first device with the second device over the link bundle, with each particular link of the link bundle operated according to said operational details said represented in said one or more link control packets.

15. The method of claim 14, wherein said one or more link control packets include a plurality of link particular ordering packets;

wherein each link particular ordering packet of the plurality of link particular ordering packets is sent over a different one of the plurality of links and specifies a link bundle ordering for said different one of the plurality of links.

16. The method of claim 15, wherein said link particular ordering packet for said different one of the plurality of links includes a link operational designation of active or standby, with at least two of said link particular ordering packets designating active;

and at least one of said link particular ordering packets designating standby.

17. The method of claim 15, wherein one or more of said link particular ordering packets for said different one of the plurality of links includes a link operational designation of active, standby, or hot standby, with at least one of said link particular ordering packets designating hot standby corresponding to data being able to be sent immediately without initialization operations over said at least one of the plurality of links having been designated as a hot standby.

18. The method of claim 15, wherein said link particular ordering packet for at least two of said different ones of the plurality of links includes a link operational designation of standby;

and wherein the link bundle ordering provides an order for which to use said at least two of said different ones of the plurality of links for replacing other links of the plurality of links.

19. The method of claim 14, wherein said one or more link control packets include a plurality of link rate control packets;

wherein each particular link rate control packet is sent over a different one of the plurality of links and specifies a rate at which the second device should send information to the first device across said different one of the plurality of links.

20. The method of claim 14, wherein each of said the plurality of link rate control packets includes one or more values representing a rate at which the first device is sending information to the second device across said different one of the plurality of links.

21. The method of claim 14, wherein said one or more link control packets include a plurality of link rate control packets;

wherein each particular link rate control packet is sent over a different one of the plurality of links and specifies a rate at which the first device is sending information to the second device across said different one of the plurality of links.

22. An apparatus, comprising:

a bundle interface configured for communicating, by the apparatus with a second device, one or more link bundle control packets over a link bundle;

wherein the link bundle includes a plurality of links with each link of the plurality of links being coupled between the apparatus and the second device;

wherein said one or more link bundle control packets are directed at the operation of the link bundle in its entirety; and

wherein said one or more link bundle control packets are communicated over one or more of the plurality of links; and

wherein the apparatus is configured to communicate information with the second device over the link bundle operated according to control information included in said one or more link bundle control packets.

23. The apparatus of claim 22, wherein each of said one or more link bundle control packets includes a Bundle Information type-length-value element (TLV) specifying an operational state of the link bundle from a group of operational states comprising:

an active state, and an inactive state.

24. An apparatus, comprising:

a bundle interface configured for communicating, from the apparatus to a second device, one or more link control packets over each particular link of one or more of a plurality of links of a link bundle;

wherein the link bundle includes the plurality of links with each of the plurality of links being coupled between the apparatus and the second device;

wherein said one or more link control packets include one or more values representing operational details for said particular link over which said link control packet is being said communicated; and

wherein the apparatus is configured to communicate information with the second device over the link bundle, with each particular link of the link bundle operating according to said operational details for said particular link included in at least one of said one or more link control packets.

25. The apparatus of claim 24, wherein each of said one or more link control packets includes a Member Information type-length-value element (TLV) specifying a particular link ordering.

26. The apparatus of claim 24, wherein each of said one or more link control packets includes a Rate Information type-length-value element (TLV) specifying a rate at which the apparatus is sending packets to the second device over the link bundle, and specifying a rate at which the second device is requested to send packets to the apparatus.