Pseudo wire load sharing method and device

Patent metadata

Field	Value
Publication number	US-10965594-B2
Application number	US-201916371476-A
Country	US
Kind code	B2
Filing date	Apr 1, 2019
Priority date	Sep 30, 2016
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

This application provides a pseudo wire load sharing method and apparatus, applied to a scenario in which a first provider edge PE device is separately connected to at least one second PE device by using at least two PWs. The method comprises receiving, by the first PE device, a data flow from a customer edge CE device, and forwarding the data flow to a PW trunk interface, where the PW trunk interface is associated with at least two active PWs; and performing, by the first PE device, load sharing processing on the data flow, and forwarding the data flow by using the at least two active PWs. This is beneficial to transmission of large data traffic by using the PW.

First claim

What is claimed is:

1. A pseudo wire (PW) load sharing method comprising:
receiving, by a first provider edge (PE) device, a data flow from a customer edge (CE) device;
creating, by the first PE device, a PW trunk interface;
associating the PW trunk interface with at least two PWs;
obtaining, by the first PE device, an active PW quantity parameter, wherein the active PW quantity parameter represents a quantity of PWs in an active state, and is a positive integer greater than or equal to 2;
determining at least two active PWs from the at least two PWs according to the active PW quantity parameter;
forwarding the data flow to the PW trunk interface, wherein the first PE device is separately connected to at least one second PE device by using the at least two PWs, and the PW trunk interface is associated with at least two active PWs; and
performing, by the first PE device, load sharing on the data flow, and forwarding the data flow by using the at least two active PWs.

2. The method of claim 1 , wherein determining at least two active PWs from the at least two PWs according to the active PW quantity parameter comprises:
obtaining, by the first PE device, a priority of each PW in the at least two PWs; and
determining at least two PWs as active PWs according to the priority of each PW in the at least two PWs and the active PW quantity parameter.

3. The method of claim 2 , wherein determining at least two PWs as active PWs according to the priority of each PW in the at least two PWs and the active PW quantity parameter comprises:
obtaining, by the first PE device, the priority of each PW in the at least two PWs; and
determining, from the at least two PWs, at least two PWs with higher priority ranks as active PWs according to a descending order of the priorities of the PWs and the active PW quantity parameter, wherein the priority of the PW is used to indicate precedence in using the PW as an active PW.

4. The method of claim 1 , wherein determining at least two active PWs from the at least two PWs according to the active PW quantity parameter comprises:
obtaining, by the first PE device, an internet protocol (IP) address of a peer second PE of each PW in the at least two PWs; and
determining at least two PWs as active PWs according to the IP address of the peer second PE of each PW in the at least two PWs and the active PW quantity parameter.

5. The method of claim 4 , wherein determining at least two PWs as active PWs according to the IP address of the peer second PE of each PW in the at least two PWs and the active PW quantity parameter comprises:
obtaining, by the first PE device, the IP address of the peer second PE of each PW in the at least two PWs; and
determining, from the at least two PWs, at least two PWs with higher IP address ranks as active PWs according to an order of the IP addresses of the peer second PEs of the PWs and the active PW quantity parameter.

6. The method of claim 1 , wherein determining at least two active PWs from the at least two PWs according to the active PW quantity parameter comprises:
obtaining, by the first PE device, a priority of each PW in the at least two PWs and an IP address of a peer second PE of each PW in the at least two PWs; and
determining at least two PWs as active PWs according to the priority of each PW in the at least two PWs, the IP address of the peer second PE of each PW in the at least two PWs, and the active PW quantity parameter.

7. The method of claim 1 , wherein receiving, by the first PE device, a data flow from a CE device, comprises receiving, by the first PE device, the data flow from the CE device through an attachment circuit (AC) interface, and wherein forwarding the data flow to a PW trunk interface comprises forwarding the data flow to the PW trunk interface according to an association relationship between the AC interface and the PW trunk interface.

8. A first provider edge (PE) device separately connected to at least one second PE device by using at least two PWs, the first PE device comprising:
a non-transitory memory comprising instructions;
a receiver configured to receive a data flow from a customer edge (CE) device;
a processor in communication with the non-transitory memory, wherein the instructions cause the processor to:
create a PW trunk interface;
associate the PW trunk interface with at least two PWs;
obtain an active PW quantity parameter, wherein the active PW quantity parameter represents a quantity of PWs in an active state, and is a positive integer greater than or equal to 2; and
determine at least two active PWs from the at least two PWs according to the active PW quantity parameter;
forward the data flow to the PW trunk interface, wherein the PW trunk interface is associated with the at least two active PWs; and
perform load sharing processing on the data flow; and

a transmitter configured to forward the data flow by using the at least two active PWs.

9. The first PE device of claim 8 , wherein the instructions further cause the processor to:
obtain a priority of each PW in the at least two PWs; and
determine the at least two PWs as active PWs according to the priority of each PW in the at least two PWs and the active PW quantity parameter.

10. The first PE device of claim 9 , wherein the instructions further cause the processor to:
obtain the priority of each PW in the at least two PWs; and
determine, from the at least two PWs, at least two PWs with higher priority ranks as the active PWs according to an order of the priorities of the PWs and the active PW quantity parameter, wherein the priority of the PW is used to indicate precedence in using the PW as an active PW.

11. The first PE device of claim 8 , wherein the instructions further cause the processor to:
obtain an internet protocol (IP) address of a peer second PE of each PW in the at least two PWs; and
determine at least two PWs as the active PWs according to the IP address of the peer second PE of each PW in the at least two PWs and the active PW quantity parameter.

12. The first PE device of claim 11 , wherein the instructions further cause the processor to:
obtain the IP address of the peer second PE of each PW in the at least two PWs; and
determine, from the at least two PWs, at least two PWs with higher IP address ranks as the active PWs according to an order of the IP addresses of the peer second PEs of the PWs and the active PW quantity parameter.

13. The first PE device of claim 8 , wherein the instructions further cause the processor to:
obtain a priority of each PW in the at least two PWs and an IP address of a peer second PE of each PW in the at least two PWs; and
determine at least two PWs as active PWs according to the priority of each PW in the at least two PWs, the IP address of the peer second PE of each PW in the at least two PWs, and the active PW quantity parameter.

14. The first PE device of claim 8 , wherein the receiver is configured to receive the data flow from the CE device through an attachment circuit (AC) interface, and wherein the instructions further cause the processor to:
forward the data flow to the PW trunk interface according to an association relationship between the AC interface and the PW trunk interface; and
store the association relationship between the AC interface and the PW trunk interface.

15. The first PE device of claim 8 , wherein the receiver is configured to receive the data flow from the CE device through an attachment circuit (AC) interface, and wherein the instructions further cause the processor to:
forward the data flow to a virtual switch instance (VSI);
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Assignees

• Huawei Tech Co Ltd

Inventors

• Pan Wang

Classifications

• H04L12/4641 Primary

  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 title

• H04L12/28

  characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks] (wireless communication networks H04W {; arrangements for dividing the transmission path H04W40/00}) · CPC title

• H04L45/22

  Alternate routing · CPC title

• H04L45/38

  Flow based routing · CPC title

• H04L45/44

  Distributed routing · CPC title