Optical line terminal OLT device virtualization method and related device

Patent metadata

Field	Value
Publication number	US-11336973-B2
Application number	US-201916552084-A
Country	US
Kind code	B2
Filing date	Aug 27, 2019
Priority date	Feb 28, 2017
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

An optical line terminal (OLT) device virtualization method and a related device, the method including creating a plurality of virtual OLT systems on an OLT device, and determining system resources of each of the plurality of virtual OLT systems according to a preset rule. The system resources include a physical resource and a logical resource, and physical resources and logical resources of the plurality of virtual OLT systems are different from each other.

First claim

What is claimed is:

1. An optical line terminal (OLT) device virtualization method, comprising:
creating a plurality of virtual OLT systems on an optical line terminal (OLT) device; and
determining system resources of each virtual OLT of the plurality of virtual OLT systems according to a preset rule, wherein the system resources comprise a physical resource and a logical resource, wherein physical resources of the plurality of virtual OLT systems are different from logical resources of the plurality of virtual OLT systems, wherein the preset rule controls allocation of physical resources for a virtual OLT of the plurality of virtual OLT systems according to port information of the OLT device, wherein physical resources include a shelf, a slot, an optical network terminal (ONT), a central processing unit (CPU), and a memory, and wherein more than one virtual OLT system may be assigned to one or more ports on a same service board.

2. The method according to claim 1 , wherein, the determining the system resources of each virtual OLT according to the preset rule results in at least one of:
service boards that are on the OLT device and that are allocated to the plurality of virtual OLT systems are different;
ports that are on the OLT device and that are allocated to the plurality of virtual OLT systems are different;
optical network units (ONUs) that are on the OLT device and that are allocated to the plurality of virtual OLT systems are different; or
service flows corresponding to the plurality of virtual OLT systems are different.

3. The method according to claim 2 , wherein the plurality of virtual OLT systems comprise one management OLT system and at least one common OLT system, wherein the common OLT system is configured to run and process an OLT service, and wherein the management OLT system is configured to regulate the common OLT system and run and process the OLT service, or is configured to regulate the common OLT system.

4. The method according to claim 3 , wherein the at least one common OLT system comprises a first virtual OLT system and a second virtual OLT system, and wherein the method further comprises:
receiving a request that is sent by the first virtual OLT system and that is used to operate the second virtual OLT system;
determining whether the first virtual OLT system has preset operation permission; and
performing, using the management OLT system, a target operation of the first virtual OLT system for the second virtual OLT system in response to the first virtual OLT system having the preset operation permission.

5. The method according to claim 4 , wherein the virtual OLT system comprises a plurality of virtual local area networks (VLANs), and wherein the method further comprises:
creating a corresponding forwarding domain (FD) for each VLAN in the plurality of virtual OLT systems, wherein any two VLANs in the plurality of OLT virtual systems correspond to different FDs.

6. The method according to claim 5 , wherein the plurality of virtual OLT systems comprise a third virtual OLT system and a fourth virtual OLT system; and
wherein an intersection set between a VLAN ID set corresponding to the third virtual OLT system and a VLAN ID set corresponding to the fourth virtual OLT system is not an empty set, and wherein a VLAN ID set comprises VLAN IDs of all VLANs in a corresponding OLT system.

7. The method according to claim 6 , wherein the method further comprises:
creating a forwarding entry for the FD, wherein the forwarding entry comprises at least one of a media access control (MAC) address table or a routing table.

8. The method according to claim 7 , wherein the logical resource comprises at least one of an application process, a virtual machine (VM), a thread, network management, an alarm, a log, a configuration file, a media access control MAC address, an IP address, a service flow, a VLAN, or a VLAN layer-3 interface.

9. An optical line terminal (OLT) device, comprising:
a processor; and
a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions to:
create a plurality of virtual OLT systems on the optical line terminal (OLT) device; and
determine system resources of each virtual OLT of the plurality of virtual OLT systems according to a preset rule, wherein the system resources comprise a physical resource and a logical resource, wherein physical resources of the plurality of virtual OLT systems are different from logical resources of the plurality of virtual OLT systems, wherein the preset rule controls allocation of physical resources for a virtual OLT of the plurality of virtual OLT systems according to port information of the OLT device, wherein physical resources include a shelf, a slot, an optical network terminal (ONT), a central processing unit (CPU), and a memory, and wherein more than one virtual OLT system may be assigned to one or more ports on a same service board.

10. The device according to claim 9 , wherein the instructions to determine the system resources of each virtual OLT according to the preset rule results in at least one of:
service boards that are on the OLT device and that are allocated to the plurality of virtual OLT systems are different;
ports that are on the OLT device and that are allocated to the plurality of virtual OLT systems are different;
optical network units (ONUs) that are on the OLT device and that are allocated to the plurality of virtual OLT systems are different; or
service flows corresponding to the plurality of virtual OLT systems are different.

11. The device according to claim 10 , wherein the plurality of virtual OLT systems comprise one management OLT system and at least one common OLT system, wherein the common OLT system is configured to run and process an OLT service, and wherein the management OLT system is configured to regulate the common OLT system and run and process the OLT service, or is configured to regulate the common OLT system.

12. The device according to claim 11 , further comprising a receiver;
wherein the at least one common OLT system comprises a first virtual OLT system and a second virtual OLT system; and
wherein the program further includes instructions to:
receive, through the receiver, a request that is sent by the first virtual OLT system and that is used to operate the second virtual OLT system;
determine whether the first virtual OLT system has preset operation permission; and
perform, using the management OLT system, a target operation of the first virtual OLT system for the second virtual OLT system in response to the first virtual OLT system having the preset operation permission.

13. The device according to claim 12 , wherein the virtual OLT system comprises a plurality of virtual local area networks (VLANs); and
wherein the program further includes instructions to:
create a corresponding forwarding domain (FD) for each VLAN of the plurality of VLANs in the plurality of virtual OLT systems, wherein any two VLANs in the plurality of OLT virtual systems correspond to different FDs.

14. The device according to claim 13 , wherein the plurality of virtual OLT systems comprise a third virtual OLT system and a fourth virtual OLT system; and
wherein an intersection set between a VLAN identifier (ID) set corresponding to the third virtual OLT system and a VLAN ID set corresponding to the fourth virtual OLT system is not an empty set, and wherein a VLAN ID set comprises VLAN IDs of all VLANs in a corresponding OLT system.

15. The device according to claim 14 , wherein the program further includes instruction

Assignees

• Huawei Tech Co Ltd

Inventors

• Zhang Yanhua
• Wei Zengzhan
• Wang Daoming
• Tang Jianwen

Classifications

• H04B10/27 Primary

  Arrangements for networking · CPC title

• 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

• H04Q2011/0086

  Network resource allocation, dimensioning or optimisation · CPC title

• H04Q11/0067 Primary

  Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring · CPC title

• H04Q2011/0064

  Arbitration, scheduling or medium access control aspects · CPC title