VIRTUAL CLUSTER ESTABLISHMENT METHOD AND NETWORK DEVICE

• US 20150249599A1
• Filed: 05/13/2015
• Published: 09/03/2015
• Est. Priority Date: 11/13/2012
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Wu, Xiaoqian, Hu, Jiehui, Song, Xuefei
• Granted Patent: US 10,462,048 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 41/0893 Assignment of logical groups to network elements
• CPC Class Codes: H04L 41/0895 Configuration of virtualised networks or elements, e.g. virtualised network function or OpenFlow elements
• 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 41/0897 by horizontal or vertical scaling of resources, or by migrating entities, e.g. virtual resources or entities
• CPC Class Codes: H04L 45/02 Topology update or discovery
• CPC Class Codes: H04L 45/46 Cluster building
• CPC Class Codes: H04L 65/1073 Registration or de-registration
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46

Abstract

The present invention provides a virtual cluster establishment method and a network device. The method includes: a first network device establishes, a network-layer-based first communication connection with a second network device; the first network device sends a first registration request message to the second network device through the first communication connection, where the first registration request message is used to establish a virtual cluster with the second network device; after the first network device receives a registration response message, selecting the second network device as an active main control device in the virtual cluster system; establishes, a network-layer-based second communication connection with a third network device; sends, a second registration request message to the third network device; and selects the third network device as a standby main control device. In this invention, a structure of a cluster is simplified, and scalability of the cluster is improved.

Claims

1. A virtual cluster establishment method, comprising:

establishing, by a first network device, a network-layer-based first communication connection with a second network device;

sending, by the first network device, a first registration request message to the second network device through the first communication connection, wherein the first registration request message is used to request to establish a virtual cluster with the second network device;

after the first network device receives a first registration response message sent by the second network device, wherein the first registration response message indicates that the virtual cluster is successfully established, selecting the second network device as an active main control device of the first network device in the virtual cluster;

establishing, by the first network device, a network-layer-based second communication connection with a third network device;

sending, by the first network device, a second registration request message to the third network device through the second communication connection, wherein the second registration request message is used to request the third network device to join the virtual cluster; and

after the first network device receives a second registration response message sent by the third network device, selecting the third network device as a standby main control device of the first network device in the virtual cluster.

2. The method according to claim 1, wherein:

the first communication connection established by the first network device with the second network device passes through a fourth network device, wherein the fourth network device does not belong to the virtual cluster;

or

the second communication connection established by the first network device with the third network device passes through a fifth network device, wherein the fifth network device does not belong to the virtual cluster.

3. The method according to claim 1, wherein selecting the second network device as an active main control device of the first network device in the virtual cluster system specifically comprises:

forwarding, by the first network device, a control protocol packet received from a network device outside the virtual cluster to the second network device through the first communication connection, so that the second network device generates an external forwarding table of the virtual cluster according to the control protocol packet; and

receiving, by the first network device, the external forwarding table of the virtual cluster that is sent by the second network device.

4. The method according to claim 3, wherein the second registration request message comprises an address of the second network device, so that, after receiving the second registration request message, the third network device establishes a network-layer-based third communication connection with the second network device according to the address of the second network device, wherein the third communication connection is used to send the external forwarding table of the virtual cluster to the third network device by the second network device.

5. The method according to claim 1, further comprising:

when the first network device detects that the first communication connection to the second network device is interrupted, sending a notification message to the third network device, wherein the notification message is used to instruct the third network device to upgrade to the active main control device of the first network device.

6. The method according to claim 5, further comprising:

receiving, by the first network device, the external forwarding table of the virtual cluster sent by the third network device; and

updating, by the first network device and according to the external forwarding table of the virtual cluster sent by the third network device, an external forwarding table of the virtual cluster that is locally stored in the first network device, and deleting an external forwarding table of the virtual cluster that is locally stored and is not updated.

7. A virtual cluster establishment method, comprising:

establishing, by a second network device, a network-layer-based first communication connection with a first network device;

establishing, by the second network device, a network-layer-based third communication connection with a third network device;

receiving, by the second network device, a first registration request message sent through the first communication connection by the first network device;

receiving, by the second network device, a third registration request message sent through the third communication connection by the third network device; and

establishing, by the second network device, a virtual cluster with the first network device and the third network device according to the first registration request message and the third registration request message, wherein the second network device is used as an active main control device of the first network device in the virtual cluster, and the third network device is used as a standby main control device of the first network device in the virtual cluster.

8. The method according to claim 7, wherein the first communication connection established by the second network device with the first network device passes through a fourth network device, wherein the fourth network device does not belong to the virtual cluster.

9. The method according to claim 7, wherein the second network device is used as an active main control device of the first network device in the virtual cluster system comprises:

receiving, by the second network device, a control protocol packet that is sent through the first communication connection by the first network device, wherein the control protocol packet is received by the first network device from a network device outside the virtual cluster; and

generating, by the second network device, an external forwarding table of the virtual cluster according to the control protocol packet, and sending the forwarding table to the first network device.

10. The method according to claim 7, further comprising:

when the first communication connection between the second network device and the first network device is interrupted, upgrading the third network device to the active main control device of the first network device in the virtual cluster.

11. A first network device, comprising:

a communication connecting unit, configured to establish a network-layer-based first communication connection with a second network device, and configured to establish a network-layer-based second communication connection with a third network device;

a message transmitting unit, configured to;

send a first registration request message to the second network device through the first communication connection, wherein the first registration request message is used to request establishment of a virtual cluster with the second network device;

receive a first registration response message sent by the second network device, wherein the first registration response message indicates that the virtual cluster is successfully established,

send a second registration request message to the third network device through the second communication connection, wherein the second registration request message is used to request the third network device to join the virtual cluster; and

receive a second registration response message sent by the third network device; and

a device determining unit, configured to;

after the message transmitting unit receives the first registration response message sent by the second network device, wherein the first registration response message indicates that the virtual cluster is successfully established, select the second network device as an active main control device of the first network device in the virtual cluster system; and

after the message transmitting unit receives the second registration response message sent by the third network device, select the third network device as a standby main control device of the network device itself in the virtual cluster.

12. The network device according to claim 11, wherein:

the first communication connection established with the second network device passes through a fourth network device, wherein the fourth network device does not belong to the virtual cluster;

or

the second communication connection established with the third network device passes through a fifth network device, wherein the fifth network device does not belong to the virtual cluster.

13. The network device according to claim 11, further comprising:

a packet transmit-receive unit, configured to;

forward a control protocol packet received from a network device outside the virtual cluster to the second network device through the first communication connection, so that the second network device generates an external forwarding table of the virtual cluster according to the control protocol packet; and

receive the external forwarding table of the virtual cluster that is sent by the second network device.

14. The network device according to claim 13, wherein:

the second registration request message sent by the message transmitting unit to the third network device comprises an address of the second network device, so that, after receiving the second registration request message, the third network device establishes a network-layer-based third communication connection with the second network device according to the address of the second network device, wherein the third communication connection is used to send the external forwarding table of the virtual cluster to the third network device by the second network device through the third communication connection.

15. The network device according to claim 11, wherein:

the message transmitting unit is further configured to;

when the first network device detects that the first communication connection to the second network device is interrupted, send a notification message to the third network device, wherein the notification message is used to instruct the third network device to upgrade to the active main control device of the first network device.

16. The network device according to claim 15, further comprising:

a forwarding management unit, configured to;

receive the external forwarding table of the virtual cluster that is sent by the third network device,

update, according to the external forwarding table of the virtual cluster that is sent by the third network device, an external forwarding table of the virtual cluster that is locally stored in the first network device, and

delete an external forwarding table of the virtual cluster that is locally stored and is not updated.

17. A second network device, comprising:

a communication connecting unit, configured to;

establish a network-layer-based first communication connection with a first network device, and

establish a network-layer-based third communication connection with a third network device;

a message transmitting unit, configured to;

receive a first registration request message that is sent through the first communication connection by the first network device, and

receive a third registration request message that is sent through the third communication connection by the third network device; and

a cluster establishing unit, configured to establish a virtual cluster with the first network device and the third network device according to the first registration request message and the third registration request message, wherein the second network device is used as an active main control device of the first network device in the virtual cluster, and the third network device is used as a standby main control device of the first network device in the virtual cluster.

18. The network device according to claim 17, wherein the network-layer-based first communication connection established with the first network device passes through a fourth network device, wherein the fourth network device does not belong to the virtual cluster.

19. The network device according to claim 17, further comprising:

a forwarding management unit, configured to;

receive a control protocol packet that is sent through the first communication connection by the first network device, wherein the control protocol packet is received by the first network device from a network device outside the virtual cluster;

generate an external forwarding table of the virtual cluster according to the control protocol packet; and

send the forwarding table to the first network device.