Service path switching method and related device

Patent metadata

Field	Value
Publication number	US-11800262-B2
Application number	US-202117502288-A
Country	US
Kind code	B2
Filing date	Oct 15, 2021
Priority date	Apr 18, 2019
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

According to a method, when it is detected that service traffic needs to be switched from a first optical layer path to a second optical layer path, a first internet protocol (IP) link associated with the service traffic needs to be determined, and an IP link used to transmit the service traffic is adjusted from the first IP link to a second IP link; an optical layer path of the first IP link is switched from the first optical layer path to the second optical layer path after the adjustment of the IP link is completed; and the IP link used to transmit the service traffic is adjusted from the second IP link to the first IP link after the switching of the optical layer path is completed. In this way, continuity of the service traffic can be ensured.

First claim

What is claimed is:

1. A method, comprising:
determining a first internet protocol (IP) link associated with service traffic when it is detected that the service traffic needs to be switched from a first optical layer path to a second optical layer path, wherein both the first optical layer path and the second optical layer path are optical layer paths of the first IP link;
adjusting an IP link used to transmit the service traffic from the first IP link to a second IP link, so that the service traffic is adjusted from the first optical layer path of the first IP link to a third optical layer path of the second IP link;
switching an optical layer path of the first IP link from the first optical layer path to the second optical layer path; and
adjusting the IP link used to transmit the service traffic from the second IP link to the first IP link when it is detected that the optical layer path of the first IP link is switched from the first optical layer path to the second optical layer path, so that the service traffic is adjusted from the third optical layer path of the second IP link to the second optical layer path of the first IP link,
wherein the adjusting the IP link used to transmit the service traffic from the second IP link to the first IP link when it is detected that the optical layer path of the first IP link is switched from the first optical layer path to the second optical layer path comprises:
obtaining a priority of the first IP link and a priority of the second IP link when it is detected that the optical layer path of the first IP link is switched from the first optical layer path to the second optical layer path; and
adjusting the IP link used to transmit the service traffic from the second IP link to the first IP link when the priority of the first IP link is higher than the priority of the second IP link.

2. The method according to claim 1 , wherein the determining a first internet protocol (IP) link associated with service traffic comprises:
obtaining IP layer link information from an IP domain controller and obtaining optical layer link information from an optical domain controller; and
determining, based on the IP layer link information and the optical layer link information, the first IP link associated with the service traffic.

3. The method according to claim 2 , wherein the adjusting an IP link used to transmit the service traffic from the first IP link to a second IP link comprises:
setting a working status of the first IP link as a maintenance state; and
sending a first notification message to the IP domain controller, wherein the first notification message comprises the maintenance state, and the first notification message notifies the IP domain controller to adjust, from the first IP link to the second IP link, the IP link used to transmit the service traffic.

4. The method according to claim 2 , wherein the adjusting the IP link used to transmit the service traffic from the second IP link to the first IP link when it is detected that the optical layer path of the first IP link is switched from the first optical layer path to the second optical layer path comprises:
setting a working status of the first IP link as a normal state when it is detected that the optical layer path of the first IP link is switched from the first optical layer path to the second optical layer path; and
sending a second notification message to the IP domain controller, wherein the second notification message comprises the normal state, and the second notification message notifies the IP domain controller to adjust, from the second IP link to the first IP link, the IP link used to transmit the service traffic.

5. The method according to claim 1 , wherein the method further comprises, before the determining a first internet protocol (IP) link associated with the service traffic:
determining that the service traffic needs to be switched from the first optical layer path to the second optical layer path when it is detected that a fault on the second optical layer path is rectified.

6. The method according to claim 1 , wherein the second optical layer path is a path recovered from a faulty state to an available state.

7. A service path switching apparatus, comprising:
at least one processor;
one or more memories coupled to the at least one processor and storing instructions; that, when executed by the at least one processor, cause the apparatus to:
determine a first internet protocol (IP) link associated with service traffic when it is detected that the service traffic needs to be switched from a first optical layer path to a second optical layer path, wherein both the first optical layer path and the second optical layer path are optical layer paths of the first IP link;
adjust an IP link used to transmit the service traffic from the first IP link to a second IP link, so that the service traffic is adjusted from the first optical layer path of the first IP link to a third optical layer path of the second IP link;
switch an optical layer path of the first IP link from the first optical layer path to the second optical layer path; and
adjust the IP link used to transmit the service traffic from the second IP link to the first IP link when it is detected that the optical layer path of the first IP link is switched from the first optical layer path to the second optical layer path, so that the service traffic is adjusted from the third optical layer path of the second IP link to the second optical layer path of the first IP link,
wherein the adjusting of the IP link used to transmit the service traffic from the second IP link to the first IP link when it is detected that the optical layer path of the first IP link is switched from the first optical layer path to the second optical layer path comprises:
obtaining a priority of the first IP link and a priority of the second IP link when it is detected that the optical layer path of the first IP link is switched from the first optical layer path to the second optical layer path; and
adjusting the IP link used to transmit the service traffic from the second IP link to the first IP link when the priority of the first IP link is higher than the priority of the second IP link.

8. The apparatus according to claim 7 , wherein the instructions, when executed by the at least one processor, further cause the apparatus to:
obtain IP layer link information from an IP domain controller and obtain optical layer link information from an optical domain controller; and determine, based on the IP layer link information and the optical layer link information, the first IP link associated with the service traffic.

9. The apparatus according to claim 8 , wherein the instructions, when executed by the at least one processor, further cause the apparatus to:
set a working status of the first IP link as a maintenance state; and send a first notification message to the IP domain controller, wherein the first notification message comprises the maintenance state, and the first notification message notifies the IP domain controller to adjust, from the first IP link to the second IP link, the IP link used to transmit the service traffic.

10. The apparatus according to claim 8 , wherein the instructions, when executed by the at least one processor, further cause the apparatus to:
set a working status of the first IP link as a normal state when it is detected that the optical layer path of the first IP link is switched from the first optical layer path to the second optical layer path; and send a second notification message to the IP domain controller, wherein the second notification message comprises the normal state, and the second notification message notifies the IP domain

Assignees

• Huawei Tech Co Ltd

Inventors

• Zhang Liang
• Che Jia
• Zhao Zhongchao

Classifications

• H04L45/22

  Alternate routing · CPC title

• H04Q11/0062 Primary

  Network aspects · CPC title

• H04J14/0295 Primary

  Shared protection at the optical channel (1:1, n:m) · CPC title

• H04B10/0793

  Network aspects, e.g. central monitoring of transmission parameters · CPC title

• H04B10/0795

  Performance monitoring; Measurement of transmission parameters · CPC title